/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 23:53:24,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 23:53:24,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 23:53:24,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 23:53:24,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 23:53:24,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 23:53:24,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 23:53:24,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 23:53:24,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 23:53:24,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 23:53:24,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 23:53:24,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 23:53:24,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 23:53:24,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 23:53:24,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 23:53:24,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 23:53:24,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 23:53:24,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 23:53:24,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 23:53:24,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 23:53:24,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 23:53:24,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 23:53:24,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 23:53:24,495 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 23:53:24,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 23:53:24,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 23:53:24,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 23:53:24,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 23:53:24,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 23:53:24,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 23:53:24,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 23:53:24,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 23:53:24,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 23:53:24,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 23:53:24,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 23:53:24,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 23:53:24,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 23:53:24,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 23:53:24,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 23:53:24,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 23:53:24,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 23:53:24,511 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-RepeatedSemanticLbe.epf [2022-12-05 23:53:24,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 23:53:24,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 23:53:24,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 23:53:24,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 23:53:24,537 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 23:53:24,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 23:53:24,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 23:53:24,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 23:53:24,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 23:53:24,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 23:53:24,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 23:53:24,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 23:53:24,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 23:53:24,538 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 23:53:24,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 23:53:24,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 23:53:24,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 23:53:24,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 23:53:24,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 23:53:24,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 23:53:24,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 23:53:24,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 23:53:24,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 23:53:24,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 23:53:24,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 23:53:24,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 23:53:24,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 23:53:24,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-05 23:53:24,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 23:53:24,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 23:53:24,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 23:53:24,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 23:53:24,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 23:53:24,829 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 23:53:24,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2022-12-05 23:53:25,775 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 23:53:25,963 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 23:53:25,964 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2022-12-05 23:53:25,968 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b1d15e5/7d40ddd0dd2e49f3a209cc321b957d63/FLAG9550ab414 [2022-12-05 23:53:25,978 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38b1d15e5/7d40ddd0dd2e49f3a209cc321b957d63 [2022-12-05 23:53:25,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 23:53:25,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 23:53:25,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 23:53:25,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 23:53:25,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 23:53:25,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:53:25" (1/1) ... [2022-12-05 23:53:25,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ca8b5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:25, skipping insertion in model container [2022-12-05 23:53:25,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:53:25" (1/1) ... [2022-12-05 23:53:25,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 23:53:26,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 23:53:26,178 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-12-05 23:53:26,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 23:53:26,191 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 23:53:26,224 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-12-05 23:53:26,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 23:53:26,245 INFO L208 MainTranslator]: Completed translation [2022-12-05 23:53:26,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26 WrapperNode [2022-12-05 23:53:26,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 23:53:26,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 23:53:26,247 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 23:53:26,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 23:53:26,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,305 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 388 [2022-12-05 23:53:26,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 23:53:26,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 23:53:26,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 23:53:26,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 23:53:26,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 23:53:26,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 23:53:26,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 23:53:26,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 23:53:26,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (1/1) ... [2022-12-05 23:53:26,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 23:53:26,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:53:26,372 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) [2022-12-05 23:53:26,377 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 [2022-12-05 23:53:26,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 23:53:26,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 23:53:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 23:53:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 23:53:26,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 23:53:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 23:53:26,405 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 23:53:26,509 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 23:53:26,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 23:53:26,917 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 23:53:26,926 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 23:53:26,927 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-05 23:53:26,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:53:26 BoogieIcfgContainer [2022-12-05 23:53:26,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 23:53:26,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 23:53:26,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 23:53:26,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 23:53:26,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 11:53:25" (1/3) ... [2022-12-05 23:53:26,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565d834d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 11:53:26, skipping insertion in model container [2022-12-05 23:53:26,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:53:26" (2/3) ... [2022-12-05 23:53:26,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565d834d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 11:53:26, skipping insertion in model container [2022-12-05 23:53:26,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:53:26" (3/3) ... [2022-12-05 23:53:26,933 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-12-05 23:53:26,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 23:53:26,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 23:53:26,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 23:53:27,079 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 23:53:27,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 467 transitions, 950 flow [2022-12-05 23:53:27,284 INFO L130 PetriNetUnfolder]: 49/465 cut-off events. [2022-12-05 23:53:27,284 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 23:53:27,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 465 events. 49/465 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1352 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 319. Up to 2 conditions per place. [2022-12-05 23:53:27,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 467 transitions, 950 flow [2022-12-05 23:53:27,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 457 transitions, 926 flow [2022-12-05 23:53:27,304 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:27,323 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 457 transitions, 926 flow [2022-12-05 23:53:27,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 457 transitions, 926 flow [2022-12-05 23:53:27,402 INFO L130 PetriNetUnfolder]: 49/457 cut-off events. [2022-12-05 23:53:27,402 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 23:53:27,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 457 events. 49/457 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1332 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 319. Up to 2 conditions per place. [2022-12-05 23:53:27,426 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 457 transitions, 926 flow [2022-12-05 23:53:27,426 INFO L188 LiptonReduction]: Number of co-enabled transitions 52052 [2022-12-05 23:53:44,473 INFO L203 LiptonReduction]: Total number of compositions: 428 [2022-12-05 23:53:44,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 23:53:44,487 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=REPEATED_LIPTON_PN, 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;@7a218da2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 23:53:44,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 23:53:44,492 INFO L130 PetriNetUnfolder]: 7/28 cut-off events. [2022-12-05 23:53:44,492 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 23:53:44,492 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:44,492 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:44,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:44,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1337779771, now seen corresponding path program 1 times [2022-12-05 23:53:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097868805] [2022-12-05 23:53:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:44,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:53:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:44,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097868805] [2022-12-05 23:53:44,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097868805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:53:44,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:53:44,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 23:53:44,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610036549] [2022-12-05 23:53:44,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:53:44,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 23:53:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:44,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 23:53:44,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 23:53:44,767 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:44,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:44,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:44,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:44,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:44,858 INFO L130 PetriNetUnfolder]: 157/250 cut-off events. [2022-12-05 23:53:44,858 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-05 23:53:44,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 157/250 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 639 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 472. Up to 249 conditions per place. [2022-12-05 23:53:44,860 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2022-12-05 23:53:44,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2022-12-05 23:53:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 23:53:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 23:53:44,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2022-12-05 23:53:44,868 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2022-12-05 23:53:44,869 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 33 transitions. [2022-12-05 23:53:44,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2022-12-05 23:53:44,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 23:53:44,873 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2022-12-05 23:53:44,874 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=31} [2022-12-05 23:53:44,878 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2022-12-05 23:53:44,878 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:44,879 INFO L89 Accepts]: Start accepts. Operand has 28 places, 31 transitions, 84 flow [2022-12-05 23:53:44,880 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:44,881 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:44,881 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 28 places, 31 transitions, 84 flow [2022-12-05 23:53:44,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 31 transitions, 84 flow [2022-12-05 23:53:44,887 INFO L130 PetriNetUnfolder]: 7/31 cut-off events. [2022-12-05 23:53:44,887 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 23:53:44,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 31 events. 7/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 6 conditions per place. [2022-12-05 23:53:44,888 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 28 places, 31 transitions, 84 flow [2022-12-05 23:53:44,888 INFO L188 LiptonReduction]: Number of co-enabled transitions 192 [2022-12-05 23:53:44,924 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:53:44,926 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 48 [2022-12-05 23:53:44,926 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2022-12-05 23:53:44,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:44,926 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:44,926 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:44,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 23:53:44,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:44,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash -685768648, now seen corresponding path program 1 times [2022-12-05 23:53:44,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:44,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835362007] [2022-12-05 23:53:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 23:53:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835362007] [2022-12-05 23:53:45,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835362007] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 23:53:45,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462740417] [2022-12-05 23:53:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:45,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:45,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:53:45,146 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) [2022-12-05 23:53:45,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 23:53:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:45,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-05 23:53:45,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 23:53:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 23:53:45,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 23:53:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 23:53:45,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462740417] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 23:53:45,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 23:53:45,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-05 23:53:45,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623761815] [2022-12-05 23:53:45,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 23:53:45,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 23:53:45,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:45,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 23:53:45,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-05 23:53:45,400 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:45,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:45,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:45,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:45,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:45,518 INFO L130 PetriNetUnfolder]: 157/256 cut-off events. [2022-12-05 23:53:45,519 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 23:53:45,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 256 events. 157/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 642 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 512. Up to 249 conditions per place. [2022-12-05 23:53:45,520 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2022-12-05 23:53:45,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2022-12-05 23:53:45,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 23:53:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 23:53:45,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-12-05 23:53:45,521 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2471264367816092 [2022-12-05 23:53:45,521 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 43 transitions. [2022-12-05 23:53:45,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2022-12-05 23:53:45,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 23:53:45,523 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2022-12-05 23:53:45,523 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2022-12-05 23:53:45,523 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2022-12-05 23:53:45,523 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:45,523 INFO L89 Accepts]: Start accepts. Operand has 35 places, 37 transitions, 146 flow [2022-12-05 23:53:45,524 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:45,524 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:45,524 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 37 transitions, 146 flow [2022-12-05 23:53:45,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 37 transitions, 146 flow [2022-12-05 23:53:45,529 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2022-12-05 23:53:45,529 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 23:53:45,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 37 events. 7/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 12 conditions per place. [2022-12-05 23:53:45,530 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 37 transitions, 146 flow [2022-12-05 23:53:45,530 INFO L188 LiptonReduction]: Number of co-enabled transitions 192 [2022-12-05 23:53:45,530 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:53:45,531 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-05 23:53:45,531 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2022-12-05 23:53:45,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:45,531 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:45,532 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:45,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 23:53:45,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:45,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:45,737 INFO L85 PathProgramCache]: Analyzing trace with hash 154811961, now seen corresponding path program 2 times [2022-12-05 23:53:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:45,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207684527] [2022-12-05 23:53:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-05 23:53:45,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207684527] [2022-12-05 23:53:45,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207684527] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 23:53:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687293731] [2022-12-05 23:53:45,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 23:53:45,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:45,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:53:45,905 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) [2022-12-05 23:53:45,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 23:53:46,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 23:53:46,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 23:53:46,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 23:53:46,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 23:53:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 23:53:46,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 23:53:46,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687293731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:53:46,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 23:53:46,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-12-05 23:53:46,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165809173] [2022-12-05 23:53:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:53:46,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 23:53:46,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:46,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 23:53:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-05 23:53:46,314 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:46,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 146 flow. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:46,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:46,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:46,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:46,508 INFO L130 PetriNetUnfolder]: 165/285 cut-off events. [2022-12-05 23:53:46,509 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 23:53:46,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 285 events. 165/285 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 854 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 249 conditions per place. [2022-12-05 23:53:46,510 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2022-12-05 23:53:46,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2022-12-05 23:53:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 23:53:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 23:53:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2022-12-05 23:53:46,511 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2022-12-05 23:53:46,511 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 45 transitions. [2022-12-05 23:53:46,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2022-12-05 23:53:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-05 23:53:46,513 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2022-12-05 23:53:46,513 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2022-12-05 23:53:46,513 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-12-05 23:53:46,513 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:46,514 INFO L89 Accepts]: Start accepts. Operand has 39 places, 37 transitions, 139 flow [2022-12-05 23:53:46,514 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:46,514 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:46,514 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 37 transitions, 139 flow [2022-12-05 23:53:46,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 37 transitions, 139 flow [2022-12-05 23:53:46,520 INFO L130 PetriNetUnfolder]: 6/47 cut-off events. [2022-12-05 23:53:46,520 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 23:53:46,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 47 events. 6/47 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 78. Up to 6 conditions per place. [2022-12-05 23:53:46,520 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 37 transitions, 139 flow [2022-12-05 23:53:46,520 INFO L188 LiptonReduction]: Number of co-enabled transitions 188 [2022-12-05 23:53:46,521 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:53:46,521 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-05 23:53:46,521 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 139 flow [2022-12-05 23:53:46,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:46,522 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:46,522 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:46,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-05 23:53:46,727 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,SelfDestructingSolverStorable2 [2022-12-05 23:53:46,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash 672446397, now seen corresponding path program 3 times [2022-12-05 23:53:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:46,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191131982] [2022-12-05 23:53:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:46,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-05 23:53:46,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:46,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191131982] [2022-12-05 23:53:46,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191131982] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 23:53:46,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609730588] [2022-12-05 23:53:46,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 23:53:46,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:46,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:53:46,832 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) [2022-12-05 23:53:46,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 23:53:46,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-05 23:53:46,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 23:53:46,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 23:53:46,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 23:53:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-05 23:53:47,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 23:53:47,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609730588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:53:47,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 23:53:47,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2022-12-05 23:53:47,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431658351] [2022-12-05 23:53:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:53:47,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 23:53:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:47,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 23:53:47,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-05 23:53:47,179 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:47,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 139 flow. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:47,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:47,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:47,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:47,384 INFO L130 PetriNetUnfolder]: 173/317 cut-off events. [2022-12-05 23:53:47,384 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-12-05 23:53:47,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 317 events. 173/317 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1082 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 720. Up to 256 conditions per place. [2022-12-05 23:53:47,386 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2022-12-05 23:53:47,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2022-12-05 23:53:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 23:53:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 23:53:47,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2022-12-05 23:53:47,387 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4396551724137931 [2022-12-05 23:53:47,387 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 139 flow. Second operand 4 states and 51 transitions. [2022-12-05 23:53:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2022-12-05 23:53:47,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-05 23:53:47,389 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2022-12-05 23:53:47,389 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-12-05 23:53:47,389 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-12-05 23:53:47,389 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:47,389 INFO L89 Accepts]: Start accepts. Operand has 41 places, 37 transitions, 145 flow [2022-12-05 23:53:47,392 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:47,392 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:47,392 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 37 transitions, 145 flow [2022-12-05 23:53:47,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 145 flow [2022-12-05 23:53:47,397 INFO L130 PetriNetUnfolder]: 5/47 cut-off events. [2022-12-05 23:53:47,397 INFO L131 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2022-12-05 23:53:47,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 47 events. 5/47 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 82. Up to 6 conditions per place. [2022-12-05 23:53:47,398 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 37 transitions, 145 flow [2022-12-05 23:53:47,398 INFO L188 LiptonReduction]: Number of co-enabled transitions 186 [2022-12-05 23:53:47,399 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:53:47,400 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 11 [2022-12-05 23:53:47,400 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 145 flow [2022-12-05 23:53:47,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:47,400 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:47,400 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:47,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 23:53:47,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:47,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:47,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1666563630, now seen corresponding path program 1 times [2022-12-05 23:53:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:47,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395661850] [2022-12-05 23:53:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:47,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-05 23:53:47,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:47,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395661850] [2022-12-05 23:53:47,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395661850] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 23:53:47,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170635760] [2022-12-05 23:53:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:47,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:47,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:53:47,717 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) [2022-12-05 23:53:47,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 23:53:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:47,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 23:53:47,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 23:53:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-05 23:53:47,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 23:53:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-05 23:53:47,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170635760] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 23:53:47,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 23:53:47,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-05 23:53:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131154492] [2022-12-05 23:53:47,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 23:53:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 23:53:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 23:53:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-05 23:53:47,953 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:47,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 145 flow. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:47,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:47,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:47,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:48,074 INFO L130 PetriNetUnfolder]: 172/313 cut-off events. [2022-12-05 23:53:48,074 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2022-12-05 23:53:48,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 313 events. 172/313 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1004 event pairs, 124 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 752. Up to 304 conditions per place. [2022-12-05 23:53:48,076 INFO L137 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2022-12-05 23:53:48,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 235 flow [2022-12-05 23:53:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 23:53:48,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 23:53:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 41 transitions. [2022-12-05 23:53:48,077 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2019704433497537 [2022-12-05 23:53:48,077 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 145 flow. Second operand 7 states and 41 transitions. [2022-12-05 23:53:48,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 235 flow [2022-12-05 23:53:48,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 23:53:48,078 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 188 flow [2022-12-05 23:53:48,078 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-12-05 23:53:48,079 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-12-05 23:53:48,079 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:48,079 INFO L89 Accepts]: Start accepts. Operand has 45 places, 39 transitions, 188 flow [2022-12-05 23:53:48,080 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:48,080 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:48,080 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 39 transitions, 188 flow [2022-12-05 23:53:48,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 188 flow [2022-12-05 23:53:48,086 INFO L130 PetriNetUnfolder]: 5/49 cut-off events. [2022-12-05 23:53:48,086 INFO L131 PetriNetUnfolder]: For 7/9 co-relation queries the response was YES. [2022-12-05 23:53:48,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 49 events. 5/49 cut-off events. For 7/9 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 89 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 82. Up to 8 conditions per place. [2022-12-05 23:53:48,086 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 39 transitions, 188 flow [2022-12-05 23:53:48,087 INFO L188 LiptonReduction]: Number of co-enabled transitions 186 [2022-12-05 23:53:48,087 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:53:48,087 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 8 [2022-12-05 23:53:48,088 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 188 flow [2022-12-05 23:53:48,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:48,088 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:48,088 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:48,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 23:53:48,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:48,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:48,296 INFO L85 PathProgramCache]: Analyzing trace with hash -508501901, now seen corresponding path program 2 times [2022-12-05 23:53:48,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:48,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131242532] [2022-12-05 23:53:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-05 23:53:48,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:48,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131242532] [2022-12-05 23:53:48,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131242532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:53:48,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:53:48,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 23:53:48,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153647600] [2022-12-05 23:53:48,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:53:48,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 23:53:48,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:48,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 23:53:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 23:53:48,421 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:48,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:48,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:48,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:48,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:48,540 INFO L130 PetriNetUnfolder]: 211/378 cut-off events. [2022-12-05 23:53:48,540 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-12-05 23:53:48,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 378 events. 211/378 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1314 event pairs, 124 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 846. Up to 318 conditions per place. [2022-12-05 23:53:48,541 INFO L137 encePairwiseOnDemand]: 26/29 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2022-12-05 23:53:48,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 337 flow [2022-12-05 23:53:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 23:53:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 23:53:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2022-12-05 23:53:48,543 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2022-12-05 23:53:48,543 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 188 flow. Second operand 3 states and 46 transitions. [2022-12-05 23:53:48,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 337 flow [2022-12-05 23:53:48,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-05 23:53:48,545 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 176 flow [2022-12-05 23:53:48,546 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-12-05 23:53:48,547 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-05 23:53:48,547 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:48,547 INFO L89 Accepts]: Start accepts. Operand has 44 places, 40 transitions, 176 flow [2022-12-05 23:53:48,549 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:48,549 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:48,549 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 40 transitions, 176 flow [2022-12-05 23:53:48,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 176 flow [2022-12-05 23:53:48,555 INFO L130 PetriNetUnfolder]: 5/50 cut-off events. [2022-12-05 23:53:48,555 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-12-05 23:53:48,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 50 events. 5/50 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 96 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2022-12-05 23:53:48,556 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 40 transitions, 176 flow [2022-12-05 23:53:48,556 INFO L188 LiptonReduction]: Number of co-enabled transitions 216 [2022-12-05 23:53:50,212 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-05 23:53:50,213 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1666 [2022-12-05 23:53:50,213 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 172 flow [2022-12-05 23:53:50,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:50,213 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:50,213 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:50,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 23:53:50,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:50,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:50,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1343580082, now seen corresponding path program 1 times [2022-12-05 23:53:50,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:50,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329734698] [2022-12-05 23:53:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:50,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-05 23:53:50,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:50,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329734698] [2022-12-05 23:53:50,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329734698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:53:50,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:53:50,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 23:53:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648537835] [2022-12-05 23:53:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:53:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 23:53:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 23:53:50,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 23:53:50,329 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:50,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:50,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:50,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:50,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:50,443 INFO L130 PetriNetUnfolder]: 266/467 cut-off events. [2022-12-05 23:53:50,444 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2022-12-05 23:53:50,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 467 events. 266/467 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1543 event pairs, 132 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 1204. Up to 326 conditions per place. [2022-12-05 23:53:50,446 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2022-12-05 23:53:50,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 321 flow [2022-12-05 23:53:50,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 23:53:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 23:53:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-12-05 23:53:50,447 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2022-12-05 23:53:50,447 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 172 flow. Second operand 3 states and 44 transitions. [2022-12-05 23:53:50,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 321 flow [2022-12-05 23:53:50,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 305 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-05 23:53:50,449 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 183 flow [2022-12-05 23:53:50,450 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2022-12-05 23:53:50,451 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-12-05 23:53:50,451 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:50,451 INFO L89 Accepts]: Start accepts. Operand has 44 places, 41 transitions, 183 flow [2022-12-05 23:53:50,451 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:50,451 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:50,451 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 41 transitions, 183 flow [2022-12-05 23:53:50,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 183 flow [2022-12-05 23:53:50,458 INFO L130 PetriNetUnfolder]: 6/56 cut-off events. [2022-12-05 23:53:50,458 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-12-05 23:53:50,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 56 events. 6/56 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 85 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 85. Up to 7 conditions per place. [2022-12-05 23:53:50,459 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 41 transitions, 183 flow [2022-12-05 23:53:50,459 INFO L188 LiptonReduction]: Number of co-enabled transitions 214 [2022-12-05 23:53:50,469 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:53:50,470 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 19 [2022-12-05 23:53:50,470 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 183 flow [2022-12-05 23:53:50,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:50,470 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:50,470 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:50,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 23:53:50,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:50,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1460399636, now seen corresponding path program 1 times [2022-12-05 23:53:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:50,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772154753] [2022-12-05 23:53:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:50,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-05 23:53:50,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:50,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772154753] [2022-12-05 23:53:50,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772154753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:53:50,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:53:50,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 23:53:50,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097955831] [2022-12-05 23:53:50,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:53:50,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 23:53:50,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:53:50,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 23:53:50,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 23:53:50,575 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 29 [2022-12-05 23:53:50,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:50,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:53:50,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 29 [2022-12-05 23:53:50,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:53:50,679 INFO L130 PetriNetUnfolder]: 205/362 cut-off events. [2022-12-05 23:53:50,680 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2022-12-05 23:53:50,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 362 events. 205/362 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1069 event pairs, 64 based on Foata normal form. 36/348 useless extension candidates. Maximal degree in co-relation 842. Up to 331 conditions per place. [2022-12-05 23:53:50,681 INFO L137 encePairwiseOnDemand]: 25/29 looper letters, 42 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2022-12-05 23:53:50,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 302 flow [2022-12-05 23:53:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 23:53:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 23:53:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2022-12-05 23:53:50,682 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2022-12-05 23:53:50,682 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 183 flow. Second operand 3 states and 38 transitions. [2022-12-05 23:53:50,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 302 flow [2022-12-05 23:53:50,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 23:53:50,684 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 188 flow [2022-12-05 23:53:50,684 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2022-12-05 23:53:50,686 INFO L294 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2022-12-05 23:53:50,686 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:53:50,686 INFO L89 Accepts]: Start accepts. Operand has 46 places, 41 transitions, 188 flow [2022-12-05 23:53:50,688 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:53:50,688 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:53:50,688 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 41 transitions, 188 flow [2022-12-05 23:53:50,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 41 transitions, 188 flow [2022-12-05 23:53:50,694 INFO L130 PetriNetUnfolder]: 8/48 cut-off events. [2022-12-05 23:53:50,694 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-12-05 23:53:50,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 48 events. 8/48 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 85. Up to 7 conditions per place. [2022-12-05 23:53:50,695 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 41 transitions, 188 flow [2022-12-05 23:53:50,695 INFO L188 LiptonReduction]: Number of co-enabled transitions 176 [2022-12-05 23:53:50,695 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:53:50,698 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 12 [2022-12-05 23:53:50,698 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 188 flow [2022-12-05 23:53:50,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:53:50,698 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:53:50,698 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:53:50,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 23:53:50,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 23:53:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:53:50,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1898492142, now seen corresponding path program 1 times [2022-12-05 23:53:50,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:53:50,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473637596] [2022-12-05 23:53:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:50,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:53:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-05 23:53:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:53:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473637596] [2022-12-05 23:53:53,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473637596] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 23:53:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181391790] [2022-12-05 23:53:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:53:53,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 23:53:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:53:53,138 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) [2022-12-05 23:53:53,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 23:53:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:53:53,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-05 23:53:53,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 23:53:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-05 23:53:54,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 23:54:06,313 WARN L233 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 60 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 23:54:07,307 INFO L321 Elim1Store]: treesize reduction 37, result has 92.9 percent of original size [2022-12-05 23:54:07,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 131 treesize of output 560 Received shutdown request... [2022-12-06 00:07:04,386 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-06 00:07:04,387 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 00:07:04,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 00:07:04,410 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 00:07:04,414 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 00:07:04,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 00:07:04,593 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. [2022-12-06 00:07:04,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 00:07:04,594 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 00:07:04,595 INFO L458 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2022-12-06 00:07:04,598 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 00:07:04,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 00:07:04,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 12:07:04 BasicIcfg [2022-12-06 00:07:04,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 00:07:04,601 INFO L158 Benchmark]: Toolchain (without parser) took 818619.61ms. Allocated memory was 175.1MB in the beginning and 652.2MB in the end (delta: 477.1MB). Free memory was 151.8MB in the beginning and 378.5MB in the end (delta: -226.8MB). Peak memory consumption was 429.7MB. Max. memory is 8.0GB. [2022-12-06 00:07:04,602 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 127.9MB. Free memory was 104.7MB in the beginning and 104.5MB in the end (delta: 224.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 00:07:04,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.45ms. Allocated memory is still 175.1MB. Free memory was 151.3MB in the beginning and 138.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 00:07:04,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.76ms. Allocated memory is still 175.1MB. Free memory was 138.2MB in the beginning and 135.0MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-06 00:07:04,602 INFO L158 Benchmark]: Boogie Preprocessor took 38.41ms. Allocated memory is still 175.1MB. Free memory was 135.0MB in the beginning and 132.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-06 00:07:04,602 INFO L158 Benchmark]: RCFGBuilder took 582.40ms. Allocated memory is still 175.1MB. Free memory was 132.5MB in the beginning and 146.0MB in the end (delta: -13.5MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-12-06 00:07:04,603 INFO L158 Benchmark]: TraceAbstraction took 817670.70ms. Allocated memory was 175.1MB in the beginning and 652.2MB in the end (delta: 477.1MB). Free memory was 144.9MB in the beginning and 378.5MB in the end (delta: -233.6MB). Peak memory consumption was 421.3MB. Max. memory is 8.0GB. [2022-12-06 00:07:04,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 127.9MB. Free memory was 104.7MB in the beginning and 104.5MB in the end (delta: 224.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 264.45ms. Allocated memory is still 175.1MB. Free memory was 151.3MB in the beginning and 138.2MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.76ms. Allocated memory is still 175.1MB. Free memory was 138.2MB in the beginning and 135.0MB in the end (delta: 3.2MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.41ms. Allocated memory is still 175.1MB. Free memory was 135.0MB in the beginning and 132.5MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 582.40ms. Allocated memory is still 175.1MB. Free memory was 132.5MB in the beginning and 146.0MB in the end (delta: -13.5MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 817670.70ms. Allocated memory was 175.1MB in the beginning and 652.2MB in the end (delta: 477.1MB). Free memory was 144.9MB in the beginning and 378.5MB in the end (delta: -233.6MB). Peak memory consumption was 421.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.0s, 415 PlacesBefore, 29 PlacesAfterwards, 457 TransitionsBefore, 29 TransitionsAfterwards, 52052 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 122 TrivialYvCompositions, 264 ConcurrentYvCompositions, 42 ChoiceCompositions, 428 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 36049, independent unconditional: 0, dependent: 51, dependent conditional: 51, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 0, independent unconditional: 36049, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 0, independent unconditional: 36049, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 36100, independent: 36049, independent conditional: 0, independent unconditional: 36049, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30546, independent: 30518, independent conditional: 0, independent unconditional: 30518, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30546, independent: 30518, independent conditional: 0, independent unconditional: 30518, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 36100, independent: 5531, independent conditional: 0, independent unconditional: 5531, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 30546, unknown conditional: 0, unknown unconditional: 30546] , Statistics on independence cache: Total cache size (in pairs): 68635, Positive cache size: 68607, Positive conditional cache size: 0, Positive unconditional cache size: 68607, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 28 PlacesBefore, 28 PlacesAfterwards, 31 TransitionsBefore, 31 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 72, independent: 54, independent conditional: 54, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 72, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 72, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 72, independent: 54, independent conditional: 0, independent unconditional: 54, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 64, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 64, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 34, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 72, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 64, unknown conditional: 0, unknown unconditional: 64] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 35 PlacesBefore, 35 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 108, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 48, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 48, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 126, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 48, unknown conditional: 0, unknown unconditional: 48] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 38 PlacesBefore, 38 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 108, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 40 PlacesBefore, 40 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 108, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 126, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 45 PlacesBefore, 45 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 18, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 44 PlacesBefore, 43 PlacesAfterwards, 40 TransitionsBefore, 39 TransitionsAfterwards, 216 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 36, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 51, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, independent: 7, independent conditional: 7, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 51, independent: 8, independent conditional: 8, independent unconditional: 0, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 7, unknown conditional: 7, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 135, Positive cache size: 119, Positive conditional cache size: 7, Positive unconditional cache size: 112, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 44 PlacesBefore, 44 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 214 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 22, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 9, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 4, unknown conditional: 4, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 119, Positive conditional cache size: 7, Positive unconditional cache size: 112, Negative cache size: 20, Negative conditional cache size: 4, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 44 PlacesBefore, 44 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 176 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 22, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 22, dependent conditional: 4, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 119, Positive conditional cache size: 7, Positive unconditional cache size: 112, Negative cache size: 20, Negative conditional cache size: 4, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNetWithRepeatedLiptonReduction was analyzing trace of length 33 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 12ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 691 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 817.5s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 722 IncrementalHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 0 mSDtfsCounter, 722 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=5, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 243 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 937 SizeOfPredicates, 46 NumberOfNonLiveVariables, 776 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 183/236 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown