/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:43:45,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:43:45,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:43:45,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:43:45,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:43:45,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:43:45,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:43:45,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:43:45,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:43:45,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:43:45,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:43:45,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:43:45,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:43:45,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:43:45,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:43:45,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:43:45,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:43:45,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:43:45,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:43:45,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:43:45,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:43:45,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:43:45,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:43:45,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:43:45,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:43:45,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:43:45,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:43:45,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:43:45,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:43:45,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:43:45,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:43:45,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:43:45,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:43:45,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:43:45,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:43:45,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:43:45,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:43:45,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:43:45,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:43:45,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:43:45,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:43:45,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:43:45,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:43:45,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:43:45,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:43:45,583 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:43:45,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:43:45,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:43:45,584 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:43:45,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:43:45,584 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:43:45,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:43:45,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:43:45,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:43:45,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:43:45,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:43:45,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:43:45,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:43:45,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:43:45,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:43:45,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:43:45,807 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:43:45,808 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:43:45,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2022-09-20 22:43:45,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7a43760/6fd16fee310043d89fdb32e3e0c4effe/FLAG4f6fc584c [2022-09-20 22:43:46,185 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:43:46,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2022-09-20 22:43:46,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7a43760/6fd16fee310043d89fdb32e3e0c4effe/FLAG4f6fc584c [2022-09-20 22:43:46,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b7a43760/6fd16fee310043d89fdb32e3e0c4effe [2022-09-20 22:43:46,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:43:46,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:43:46,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:43:46,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:43:46,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:43:46,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d0ef13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46, skipping insertion in model container [2022-09-20 22:43:46,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:43:46,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:43:46,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-09-20 22:43:46,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:43:46,383 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:43:46,410 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-09-20 22:43:46,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:43:46,422 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:43:46,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46 WrapperNode [2022-09-20 22:43:46,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:43:46,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:43:46,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:43:46,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:43:46,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,458 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 283 [2022-09-20 22:43:46,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:43:46,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:43:46,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:43:46,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:43:46,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:43:46,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:43:46,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:43:46,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:43:46,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (1/1) ... [2022-09-20 22:43:46,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:43:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:43:46,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 22:43:46,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 22:43:46,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:43:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:43:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 22:43:46,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:43:46,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 22:43:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:43:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:43:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:43:46,560 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:43:46,650 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:43:46,652 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:43:46,943 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:43:46,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:43:46,952 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 22:43:46,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:43:46 BoogieIcfgContainer [2022-09-20 22:43:46,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:43:46,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:43:46,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:43:46,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:43:46,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:43:46" (1/3) ... [2022-09-20 22:43:46,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75255262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:43:46, skipping insertion in model container [2022-09-20 22:43:46,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:43:46" (2/3) ... [2022-09-20 22:43:46,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75255262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:43:46, skipping insertion in model container [2022-09-20 22:43:46,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:43:46" (3/3) ... [2022-09-20 22:43:46,973 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-09-20 22:43:46,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:43:46,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:43:46,984 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:43:47,050 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 22:43:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 371 transitions, 766 flow [2022-09-20 22:43:47,227 INFO L130 PetriNetUnfolder]: 31/368 cut-off events. [2022-09-20 22:43:47,227 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 22:43:47,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 368 events. 31/368 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 622 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 282. Up to 2 conditions per place. [2022-09-20 22:43:47,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 371 transitions, 766 flow [2022-09-20 22:43:47,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 357 transitions, 732 flow [2022-09-20 22:43:47,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:43:47,256 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@412aed97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:43:47,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 22:43:47,302 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2022-09-20 22:43:47,302 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 22:43:47,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:47,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:47,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1489616601, now seen corresponding path program 1 times [2022-09-20 22:43:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:47,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62370114] [2022-09-20 22:43:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:47,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:43:47,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:47,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62370114] [2022-09-20 22:43:47,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62370114] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:47,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:47,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:43:47,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133866089] [2022-09-20 22:43:47,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 22:43:47,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:47,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 22:43:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 22:43:47,527 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 371 [2022-09-20 22:43:47,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 357 transitions, 732 flow. Second operand has 2 states, 2 states have (on average 347.0) internal successors, (694), 2 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:47,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:47,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 371 [2022-09-20 22:43:47,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:47,589 INFO L130 PetriNetUnfolder]: 9/335 cut-off events. [2022-09-20 22:43:47,589 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-09-20 22:43:47,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 335 events. 9/335 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 616 event pairs, 0 based on Foata normal form. 35/345 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2022-09-20 22:43:47,594 INFO L137 encePairwiseOnDemand]: 349/371 looper letters, 6 selfloop transitions, 0 changer transitions 7/335 dead transitions. [2022-09-20 22:43:47,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 335 transitions, 700 flow [2022-09-20 22:43:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 22:43:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 22:43:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 712 transitions. [2022-09-20 22:43:47,608 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9595687331536388 [2022-09-20 22:43:47,608 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 712 transitions. [2022-09-20 22:43:47,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 712 transitions. [2022-09-20 22:43:47,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:47,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 712 transitions. [2022-09-20 22:43:47,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:47,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:47,623 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:47,624 INFO L175 Difference]: Start difference. First operand has 336 places, 357 transitions, 732 flow. Second operand 2 states and 712 transitions. [2022-09-20 22:43:47,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 335 transitions, 700 flow [2022-09-20 22:43:47,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 335 transitions, 688 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 22:43:47,635 INFO L231 Difference]: Finished difference. Result has 331 places, 328 transitions, 662 flow [2022-09-20 22:43:47,637 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=662, PETRI_PLACES=331, PETRI_TRANSITIONS=328} [2022-09-20 22:43:47,642 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-09-20 22:43:47,642 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 328 transitions, 662 flow [2022-09-20 22:43:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 347.0) internal successors, (694), 2 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:47,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:47,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:47,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:43:47,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:47,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:47,645 INFO L85 PathProgramCache]: Analyzing trace with hash 519040073, now seen corresponding path program 1 times [2022-09-20 22:43:47,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:47,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386638711] [2022-09-20 22:43:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:47,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:43:47,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:47,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386638711] [2022-09-20 22:43:47,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386638711] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:47,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:47,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:43:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783138545] [2022-09-20 22:43:47,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:47,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:43:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:43:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:43:47,857 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-09-20 22:43:47,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 328 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:47,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:47,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-09-20 22:43:47,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:47,990 INFO L130 PetriNetUnfolder]: 46/623 cut-off events. [2022-09-20 22:43:47,993 INFO L131 PetriNetUnfolder]: For 41/43 co-relation queries the response was YES. [2022-09-20 22:43:48,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 623 events. 46/623 cut-off events. For 41/43 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2525 event pairs, 18 based on Foata normal form. 0/586 useless extension candidates. Maximal degree in co-relation 727. Up to 55 conditions per place. [2022-09-20 22:43:48,003 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 29 selfloop transitions, 4 changer transitions 0/344 dead transitions. [2022-09-20 22:43:48,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 344 transitions, 768 flow [2022-09-20 22:43:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:43:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:43:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2022-09-20 22:43:48,006 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9105121293800539 [2022-09-20 22:43:48,006 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2022-09-20 22:43:48,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2022-09-20 22:43:48,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:48,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2022-09-20 22:43:48,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,013 INFO L175 Difference]: Start difference. First operand has 331 places, 328 transitions, 662 flow. Second operand 5 states and 1689 transitions. [2022-09-20 22:43:48,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 344 transitions, 768 flow [2022-09-20 22:43:48,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 344 transitions, 768 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:43:48,020 INFO L231 Difference]: Finished difference. Result has 331 places, 331 transitions, 691 flow [2022-09-20 22:43:48,020 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=331, PETRI_TRANSITIONS=331} [2022-09-20 22:43:48,021 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-09-20 22:43:48,021 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 331 transitions, 691 flow [2022-09-20 22:43:48,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:48,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:48,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:43:48,022 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:48,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:48,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1140450221, now seen corresponding path program 1 times [2022-09-20 22:43:48,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:48,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913845075] [2022-09-20 22:43:48,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:48,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:43:48,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:48,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913845075] [2022-09-20 22:43:48,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913845075] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:48,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:48,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:43:48,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356555418] [2022-09-20 22:43:48,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:48,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:43:48,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:43:48,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:43:48,149 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-09-20 22:43:48,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 331 transitions, 691 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:48,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-09-20 22:43:48,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:48,409 INFO L130 PetriNetUnfolder]: 57/1362 cut-off events. [2022-09-20 22:43:48,409 INFO L131 PetriNetUnfolder]: For 25/69 co-relation queries the response was YES. [2022-09-20 22:43:48,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 1362 events. 57/1362 cut-off events. For 25/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7840 event pairs, 18 based on Foata normal form. 4/1285 useless extension candidates. Maximal degree in co-relation 1572. Up to 57 conditions per place. [2022-09-20 22:43:48,421 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 33 selfloop transitions, 4 changer transitions 0/351 dead transitions. [2022-09-20 22:43:48,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 351 transitions, 817 flow [2022-09-20 22:43:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:43:48,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:43:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2022-09-20 22:43:48,424 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9126684636118598 [2022-09-20 22:43:48,424 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2022-09-20 22:43:48,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2022-09-20 22:43:48,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:48,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2022-09-20 22:43:48,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,430 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,430 INFO L175 Difference]: Start difference. First operand has 331 places, 331 transitions, 691 flow. Second operand 5 states and 1693 transitions. [2022-09-20 22:43:48,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 351 transitions, 817 flow [2022-09-20 22:43:48,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 351 transitions, 817 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:43:48,436 INFO L231 Difference]: Finished difference. Result has 338 places, 334 transitions, 720 flow [2022-09-20 22:43:48,436 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2022-09-20 22:43:48,438 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 2 predicate places. [2022-09-20 22:43:48,438 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 720 flow [2022-09-20 22:43:48,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:48,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:48,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:43:48,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1127437927, now seen corresponding path program 1 times [2022-09-20 22:43:48,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:48,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735777131] [2022-09-20 22:43:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:48,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:43:48,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:48,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735777131] [2022-09-20 22:43:48,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735777131] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:48,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:48,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 22:43:48,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068570366] [2022-09-20 22:43:48,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:48,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 22:43:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:48,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 22:43:48,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 22:43:48,523 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-09-20 22:43:48,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 720 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:48,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-09-20 22:43:48,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:48,892 INFO L130 PetriNetUnfolder]: 86/1591 cut-off events. [2022-09-20 22:43:48,892 INFO L131 PetriNetUnfolder]: For 105/233 co-relation queries the response was YES. [2022-09-20 22:43:48,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1902 conditions, 1591 events. 86/1591 cut-off events. For 105/233 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11536 event pairs, 36 based on Foata normal form. 5/1479 useless extension candidates. Maximal degree in co-relation 1893. Up to 105 conditions per place. [2022-09-20 22:43:48,918 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 31 selfloop transitions, 4 changer transitions 0/352 dead transitions. [2022-09-20 22:43:48,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 352 transitions, 836 flow [2022-09-20 22:43:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:43:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:43:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1691 transitions. [2022-09-20 22:43:48,921 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9115902964959569 [2022-09-20 22:43:48,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1691 transitions. [2022-09-20 22:43:48,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1691 transitions. [2022-09-20 22:43:48,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:48,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1691 transitions. [2022-09-20 22:43:48,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,928 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,928 INFO L175 Difference]: Start difference. First operand has 338 places, 334 transitions, 720 flow. Second operand 5 states and 1691 transitions. [2022-09-20 22:43:48,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 352 transitions, 836 flow [2022-09-20 22:43:48,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 352 transitions, 836 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:43:48,933 INFO L231 Difference]: Finished difference. Result has 345 places, 337 transitions, 749 flow [2022-09-20 22:43:48,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=749, PETRI_PLACES=345, PETRI_TRANSITIONS=337} [2022-09-20 22:43:48,935 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 9 predicate places. [2022-09-20 22:43:48,935 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 337 transitions, 749 flow [2022-09-20 22:43:48,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:48,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:48,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:48,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:43:48,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:48,940 INFO L85 PathProgramCache]: Analyzing trace with hash -939911705, now seen corresponding path program 1 times [2022-09-20 22:43:48,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:48,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010474133] [2022-09-20 22:43:48,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:48,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:49,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:43:49,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:49,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010474133] [2022-09-20 22:43:49,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010474133] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:49,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:49,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:43:49,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196809112] [2022-09-20 22:43:49,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:49,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:43:49,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:49,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:43:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:43:49,015 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 371 [2022-09-20 22:43:49,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 337 transitions, 749 flow. Second operand has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:49,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 371 [2022-09-20 22:43:49,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:49,203 INFO L130 PetriNetUnfolder]: 6/745 cut-off events. [2022-09-20 22:43:49,203 INFO L131 PetriNetUnfolder]: For 45/59 co-relation queries the response was YES. [2022-09-20 22:43:49,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 745 events. 6/745 cut-off events. For 45/59 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3196 event pairs, 0 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 874. Up to 74 conditions per place. [2022-09-20 22:43:49,209 INFO L137 encePairwiseOnDemand]: 356/371 looper letters, 42 selfloop transitions, 12 changer transitions 0/349 dead transitions. [2022-09-20 22:43:49,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 349 transitions, 881 flow [2022-09-20 22:43:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:43:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:43:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1587 transitions. [2022-09-20 22:43:49,213 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8555256064690027 [2022-09-20 22:43:49,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1587 transitions. [2022-09-20 22:43:49,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1587 transitions. [2022-09-20 22:43:49,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:49,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1587 transitions. [2022-09-20 22:43:49,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.4) internal successors, (1587), 5 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,219 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,219 INFO L175 Difference]: Start difference. First operand has 345 places, 337 transitions, 749 flow. Second operand 5 states and 1587 transitions. [2022-09-20 22:43:49,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 349 transitions, 881 flow [2022-09-20 22:43:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 349 transitions, 881 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:43:49,224 INFO L231 Difference]: Finished difference. Result has 350 places, 340 transitions, 797 flow [2022-09-20 22:43:49,224 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=797, PETRI_PLACES=350, PETRI_TRANSITIONS=340} [2022-09-20 22:43:49,226 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 14 predicate places. [2022-09-20 22:43:49,226 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 340 transitions, 797 flow [2022-09-20 22:43:49,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:49,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:49,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:43:49,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:49,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash -128035610, now seen corresponding path program 1 times [2022-09-20 22:43:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:49,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112384540] [2022-09-20 22:43:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:49,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:49,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:49,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 22:43:49,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112384540] [2022-09-20 22:43:49,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112384540] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:43:49,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090828789] [2022-09-20 22:43:49,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:49,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:43:49,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:43:49,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:43:49,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 22:43:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:49,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 22:43:49,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:43:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 22:43:49,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:43:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 22:43:49,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090828789] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:43:49,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:43:49,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-20 22:43:49,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642521259] [2022-09-20 22:43:49,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:43:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 22:43:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 22:43:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-09-20 22:43:49,651 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-09-20 22:43:49,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 340 transitions, 797 flow. Second operand has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:49,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-09-20 22:43:49,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:49,963 INFO L130 PetriNetUnfolder]: 6/772 cut-off events. [2022-09-20 22:43:49,963 INFO L131 PetriNetUnfolder]: For 57/71 co-relation queries the response was YES. [2022-09-20 22:43:49,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 772 events. 6/772 cut-off events. For 57/71 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3176 event pairs, 0 based on Foata normal form. 6/743 useless extension candidates. Maximal degree in co-relation 949. Up to 65 conditions per place. [2022-09-20 22:43:49,972 INFO L137 encePairwiseOnDemand]: 347/371 looper letters, 45 selfloop transitions, 33 changer transitions 0/370 dead transitions. [2022-09-20 22:43:49,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 370 transitions, 1019 flow [2022-09-20 22:43:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:43:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:43:49,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3417 transitions. [2022-09-20 22:43:49,978 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8372947806910072 [2022-09-20 22:43:49,978 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3417 transitions. [2022-09-20 22:43:49,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3417 transitions. [2022-09-20 22:43:49,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:49,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3417 transitions. [2022-09-20 22:43:49,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.6363636363636) internal successors, (3417), 11 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,989 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:49,990 INFO L175 Difference]: Start difference. First operand has 350 places, 340 transitions, 797 flow. Second operand 11 states and 3417 transitions. [2022-09-20 22:43:49,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 370 transitions, 1019 flow [2022-09-20 22:43:49,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 370 transitions, 1001 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:43:49,998 INFO L231 Difference]: Finished difference. Result has 360 places, 358 transitions, 946 flow [2022-09-20 22:43:49,998 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=946, PETRI_PLACES=360, PETRI_TRANSITIONS=358} [2022-09-20 22:43:50,000 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 24 predicate places. [2022-09-20 22:43:50,000 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 358 transitions, 946 flow [2022-09-20 22:43:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:50,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:50,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:50,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 22:43:50,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-09-20 22:43:50,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:50,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:50,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1843899982, now seen corresponding path program 2 times [2022-09-20 22:43:50,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:50,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044030331] [2022-09-20 22:43:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:50,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-09-20 22:43:50,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044030331] [2022-09-20 22:43:50,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044030331] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:43:50,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747763238] [2022-09-20 22:43:50,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 22:43:50,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:43:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:43:50,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:43:50,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 22:43:50,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 22:43:50,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:43:50,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 22:43:50,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:43:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-09-20 22:43:50,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 22:43:50,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747763238] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:50,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 22:43:50,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-09-20 22:43:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123204883] [2022-09-20 22:43:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:43:50,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:43:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-09-20 22:43:50,487 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 371 [2022-09-20 22:43:50,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 358 transitions, 946 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:50,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:50,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 371 [2022-09-20 22:43:50,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:50,866 INFO L130 PetriNetUnfolder]: 182/1889 cut-off events. [2022-09-20 22:43:50,866 INFO L131 PetriNetUnfolder]: For 249/271 co-relation queries the response was YES. [2022-09-20 22:43:50,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1889 events. 182/1889 cut-off events. For 249/271 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 15479 event pairs, 120 based on Foata normal form. 9/1732 useless extension candidates. Maximal degree in co-relation 2643. Up to 381 conditions per place. [2022-09-20 22:43:50,888 INFO L137 encePairwiseOnDemand]: 364/371 looper letters, 45 selfloop transitions, 4 changer transitions 5/370 dead transitions. [2022-09-20 22:43:50,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 370 transitions, 1083 flow [2022-09-20 22:43:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:43:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:43:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1849 transitions. [2022-09-20 22:43:50,913 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8306379155435759 [2022-09-20 22:43:50,913 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1849 transitions. [2022-09-20 22:43:50,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1849 transitions. [2022-09-20 22:43:50,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:50,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1849 transitions. [2022-09-20 22:43:50,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 308.1666666666667) internal successors, (1849), 6 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:50,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:50,919 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:50,919 INFO L175 Difference]: Start difference. First operand has 360 places, 358 transitions, 946 flow. Second operand 6 states and 1849 transitions. [2022-09-20 22:43:50,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 370 transitions, 1083 flow [2022-09-20 22:43:50,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 370 transitions, 1058 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-09-20 22:43:50,926 INFO L231 Difference]: Finished difference. Result has 366 places, 361 transitions, 953 flow [2022-09-20 22:43:50,927 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=953, PETRI_PLACES=366, PETRI_TRANSITIONS=361} [2022-09-20 22:43:50,927 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 30 predicate places. [2022-09-20 22:43:50,927 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 361 transitions, 953 flow [2022-09-20 22:43:50,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:50,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:50,933 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:50,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-20 22:43:51,147 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,SelfDestructingSolverStorable6 [2022-09-20 22:43:51,148 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1192180927, now seen corresponding path program 1 times [2022-09-20 22:43:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:51,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703356667] [2022-09-20 22:43:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-09-20 22:43:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:51,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703356667] [2022-09-20 22:43:51,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703356667] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:43:51,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904314447] [2022-09-20 22:43:51,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:51,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:43:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:43:51,255 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:43:51,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 22:43:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:51,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-20 22:43:51,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:43:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-09-20 22:43:51,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:43:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-09-20 22:43:51,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904314447] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:43:51,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:43:51,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-09-20 22:43:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321273828] [2022-09-20 22:43:51,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:43:51,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-20 22:43:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:51,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-20 22:43:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-09-20 22:43:51,609 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-09-20 22:43:51,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 361 transitions, 953 flow. Second operand has 22 states, 22 states have (on average 306.8636363636364) internal successors, (6751), 22 states have internal predecessors, (6751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:51,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:51,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-09-20 22:43:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:52,085 INFO L130 PetriNetUnfolder]: 6/760 cut-off events. [2022-09-20 22:43:52,086 INFO L131 PetriNetUnfolder]: For 101/115 co-relation queries the response was YES. [2022-09-20 22:43:52,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 760 events. 6/760 cut-off events. For 101/115 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2751 event pairs, 0 based on Foata normal form. 6/731 useless extension candidates. Maximal degree in co-relation 1115. Up to 65 conditions per place. [2022-09-20 22:43:52,091 INFO L137 encePairwiseOnDemand]: 347/371 looper letters, 57 selfloop transitions, 51 changer transitions 0/403 dead transitions. [2022-09-20 22:43:52,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 403 transitions, 1337 flow [2022-09-20 22:43:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:43:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:43:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5265 transitions. [2022-09-20 22:43:52,098 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8347867448866338 [2022-09-20 22:43:52,098 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5265 transitions. [2022-09-20 22:43:52,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5265 transitions. [2022-09-20 22:43:52,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:52,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5265 transitions. [2022-09-20 22:43:52,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 309.70588235294116) internal successors, (5265), 17 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:52,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 371.0) internal successors, (6678), 18 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:52,113 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 371.0) internal successors, (6678), 18 states have internal predecessors, (6678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:52,113 INFO L175 Difference]: Start difference. First operand has 366 places, 361 transitions, 953 flow. Second operand 17 states and 5265 transitions. [2022-09-20 22:43:52,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 403 transitions, 1337 flow [2022-09-20 22:43:52,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 403 transitions, 1331 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 22:43:52,120 INFO L231 Difference]: Finished difference. Result has 380 places, 382 transitions, 1210 flow [2022-09-20 22:43:52,121 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1210, PETRI_PLACES=380, PETRI_TRANSITIONS=382} [2022-09-20 22:43:52,121 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 44 predicate places. [2022-09-20 22:43:52,121 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 382 transitions, 1210 flow [2022-09-20 22:43:52,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 306.8636363636364) internal successors, (6751), 22 states have internal predecessors, (6751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:52,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:52,123 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:52,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-20 22:43:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:43:52,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 441586939, now seen corresponding path program 2 times [2022-09-20 22:43:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:52,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397047809] [2022-09-20 22:43:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:43:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397047809] [2022-09-20 22:43:52,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397047809] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:52,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:52,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:43:52,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274722421] [2022-09-20 22:43:52,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:52,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:43:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:43:52,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:43:52,482 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-09-20 22:43:52,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 382 transitions, 1210 flow. Second operand has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:52,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:52,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-09-20 22:43:52,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:54,049 INFO L130 PetriNetUnfolder]: 1535/7269 cut-off events. [2022-09-20 22:43:54,049 INFO L131 PetriNetUnfolder]: For 2025/2204 co-relation queries the response was YES. [2022-09-20 22:43:54,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11889 conditions, 7269 events. 1535/7269 cut-off events. For 2025/2204 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 79934 event pairs, 760 based on Foata normal form. 164/6756 useless extension candidates. Maximal degree in co-relation 11867. Up to 1277 conditions per place. [2022-09-20 22:43:54,108 INFO L137 encePairwiseOnDemand]: 364/371 looper letters, 77 selfloop transitions, 17 changer transitions 0/446 dead transitions. [2022-09-20 22:43:54,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 446 transitions, 1610 flow [2022-09-20 22:43:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:43:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:43:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2992 transitions. [2022-09-20 22:43:54,112 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8960766696615753 [2022-09-20 22:43:54,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2992 transitions. [2022-09-20 22:43:54,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2992 transitions. [2022-09-20 22:43:54,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:54,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2992 transitions. [2022-09-20 22:43:54,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 332.44444444444446) internal successors, (2992), 9 states have internal predecessors, (2992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:54,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:54,121 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:54,121 INFO L175 Difference]: Start difference. First operand has 380 places, 382 transitions, 1210 flow. Second operand 9 states and 2992 transitions. [2022-09-20 22:43:54,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 446 transitions, 1610 flow [2022-09-20 22:43:54,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 446 transitions, 1543 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-09-20 22:43:54,139 INFO L231 Difference]: Finished difference. Result has 384 places, 395 transitions, 1256 flow [2022-09-20 22:43:54,140 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1256, PETRI_PLACES=384, PETRI_TRANSITIONS=395} [2022-09-20 22:43:54,140 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 48 predicate places. [2022-09-20 22:43:54,140 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 395 transitions, 1256 flow [2022-09-20 22:43:54,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:54,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:54,141 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:54,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:43:54,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:54,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1688068131, now seen corresponding path program 3 times [2022-09-20 22:43:54,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:54,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891548171] [2022-09-20 22:43:54,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:54,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:43:54,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:54,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891548171] [2022-09-20 22:43:54,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891548171] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:54,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:54,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:43:54,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108599291] [2022-09-20 22:43:54,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:54,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:43:54,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:43:54,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:43:54,255 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-09-20 22:43:54,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 395 transitions, 1256 flow. Second operand has 6 states, 6 states have (on average 325.8333333333333) internal successors, (1955), 6 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:54,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:54,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-09-20 22:43:54,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:56,761 INFO L130 PetriNetUnfolder]: 1857/11702 cut-off events. [2022-09-20 22:43:56,762 INFO L131 PetriNetUnfolder]: For 4076/4404 co-relation queries the response was YES. [2022-09-20 22:43:56,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18502 conditions, 11702 events. 1857/11702 cut-off events. For 4076/4404 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 141727 event pairs, 55 based on Foata normal form. 59/10834 useless extension candidates. Maximal degree in co-relation 18476. Up to 877 conditions per place. [2022-09-20 22:43:56,859 INFO L137 encePairwiseOnDemand]: 360/371 looper letters, 106 selfloop transitions, 37 changer transitions 2/497 dead transitions. [2022-09-20 22:43:56,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 497 transitions, 1993 flow [2022-09-20 22:43:56,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:43:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:43:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3663 transitions. [2022-09-20 22:43:56,865 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8975741239892183 [2022-09-20 22:43:56,865 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3663 transitions. [2022-09-20 22:43:56,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3663 transitions. [2022-09-20 22:43:56,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:56,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3663 transitions. [2022-09-20 22:43:56,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:56,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:56,876 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:56,876 INFO L175 Difference]: Start difference. First operand has 384 places, 395 transitions, 1256 flow. Second operand 11 states and 3663 transitions. [2022-09-20 22:43:56,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 497 transitions, 1993 flow [2022-09-20 22:43:56,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 497 transitions, 1993 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:43:56,906 INFO L231 Difference]: Finished difference. Result has 402 places, 425 transitions, 1555 flow [2022-09-20 22:43:56,907 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1555, PETRI_PLACES=402, PETRI_TRANSITIONS=425} [2022-09-20 22:43:56,907 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 66 predicate places. [2022-09-20 22:43:56,907 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 425 transitions, 1555 flow [2022-09-20 22:43:56,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.8333333333333) internal successors, (1955), 6 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:56,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:56,908 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:56,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:43:56,909 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash 492808857, now seen corresponding path program 1 times [2022-09-20 22:43:56,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:56,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338108569] [2022-09-20 22:43:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:56,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:43:56,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:56,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338108569] [2022-09-20 22:43:56,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338108569] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:43:56,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763469157] [2022-09-20 22:43:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:56,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:43:56,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:43:56,978 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:43:56,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 22:43:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:57,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 22:43:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:43:57,180 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:43:57,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 22:43:57,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763469157] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:57,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 22:43:57,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-09-20 22:43:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000420837] [2022-09-20 22:43:57,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:43:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:57,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:43:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:43:57,183 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-09-20 22:43:57,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 425 transitions, 1555 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:57,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:57,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-09-20 22:43:57,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:43:59,035 INFO L130 PetriNetUnfolder]: 1194/8265 cut-off events. [2022-09-20 22:43:59,035 INFO L131 PetriNetUnfolder]: For 7067/7497 co-relation queries the response was YES. [2022-09-20 22:43:59,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14653 conditions, 8265 events. 1194/8265 cut-off events. For 7067/7497 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 93640 event pairs, 413 based on Foata normal form. 235/7873 useless extension candidates. Maximal degree in co-relation 14618. Up to 791 conditions per place. [2022-09-20 22:43:59,115 INFO L137 encePairwiseOnDemand]: 363/371 looper letters, 88 selfloop transitions, 36 changer transitions 2/488 dead transitions. [2022-09-20 22:43:59,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 488 transitions, 2178 flow [2022-09-20 22:43:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:43:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:43:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2367 transitions. [2022-09-20 22:43:59,119 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9114362726222565 [2022-09-20 22:43:59,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2367 transitions. [2022-09-20 22:43:59,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2367 transitions. [2022-09-20 22:43:59,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:43:59,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2367 transitions. [2022-09-20 22:43:59,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.14285714285717) internal successors, (2367), 7 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:59,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:59,126 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:59,126 INFO L175 Difference]: Start difference. First operand has 402 places, 425 transitions, 1555 flow. Second operand 7 states and 2367 transitions. [2022-09-20 22:43:59,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 488 transitions, 2178 flow [2022-09-20 22:43:59,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 488 transitions, 2164 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-09-20 22:43:59,152 INFO L231 Difference]: Finished difference. Result has 411 places, 439 transitions, 1776 flow [2022-09-20 22:43:59,153 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1776, PETRI_PLACES=411, PETRI_TRANSITIONS=439} [2022-09-20 22:43:59,153 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 75 predicate places. [2022-09-20 22:43:59,153 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 439 transitions, 1776 flow [2022-09-20 22:43:59,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:59,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:43:59,154 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:43:59,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-20 22:43:59,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:43:59,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:43:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:43:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1058483849, now seen corresponding path program 4 times [2022-09-20 22:43:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:43:59,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458436100] [2022-09-20 22:43:59,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:43:59,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:43:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:43:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:43:59,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:43:59,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458436100] [2022-09-20 22:43:59,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458436100] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:43:59,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:43:59,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:43:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246907063] [2022-09-20 22:43:59,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:43:59,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:43:59,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:43:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:43:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:43:59,561 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-09-20 22:43:59,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 439 transitions, 1776 flow. Second operand has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:43:59,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:43:59,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-09-20 22:43:59,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:02,165 INFO L130 PetriNetUnfolder]: 1992/11479 cut-off events. [2022-09-20 22:44:02,165 INFO L131 PetriNetUnfolder]: For 13003/14105 co-relation queries the response was YES. [2022-09-20 22:44:02,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21858 conditions, 11479 events. 1992/11479 cut-off events. For 13003/14105 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 139248 event pairs, 787 based on Foata normal form. 302/10698 useless extension candidates. Maximal degree in co-relation 21819. Up to 1635 conditions per place. [2022-09-20 22:44:02,399 INFO L137 encePairwiseOnDemand]: 362/371 looper letters, 113 selfloop transitions, 40 changer transitions 5/510 dead transitions. [2022-09-20 22:44:02,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 510 transitions, 2504 flow [2022-09-20 22:44:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:44:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:44:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3008 transitions. [2022-09-20 22:44:02,403 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.900868523510033 [2022-09-20 22:44:02,403 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3008 transitions. [2022-09-20 22:44:02,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3008 transitions. [2022-09-20 22:44:02,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:44:02,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3008 transitions. [2022-09-20 22:44:02,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 334.22222222222223) internal successors, (3008), 9 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:02,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:02,411 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:02,411 INFO L175 Difference]: Start difference. First operand has 411 places, 439 transitions, 1776 flow. Second operand 9 states and 3008 transitions. [2022-09-20 22:44:02,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 510 transitions, 2504 flow [2022-09-20 22:44:02,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 510 transitions, 2482 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:44:02,469 INFO L231 Difference]: Finished difference. Result has 422 places, 448 transitions, 1988 flow [2022-09-20 22:44:02,469 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1988, PETRI_PLACES=422, PETRI_TRANSITIONS=448} [2022-09-20 22:44:02,470 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 86 predicate places. [2022-09-20 22:44:02,470 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 448 transitions, 1988 flow [2022-09-20 22:44:02,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:02,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:44:02,470 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:44:02,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 22:44:02,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:44:02,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:44:02,471 INFO L85 PathProgramCache]: Analyzing trace with hash -700682747, now seen corresponding path program 2 times [2022-09-20 22:44:02,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:44:02,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330895354] [2022-09-20 22:44:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:44:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:44:02,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:44:02,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330895354] [2022-09-20 22:44:02,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330895354] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:44:02,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44659703] [2022-09-20 22:44:02,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 22:44:02,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:44:02,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:44:02,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:44:02,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 22:44:02,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-20 22:44:02,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:44:02,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 22:44:02,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:44:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-09-20 22:44:02,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 22:44:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44659703] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:44:02,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 22:44:02,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-09-20 22:44:02,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127701479] [2022-09-20 22:44:02,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:44:02,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:44:02,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:44:02,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:44:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:44:02,776 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-09-20 22:44:02,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 448 transitions, 1988 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:02,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:44:02,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-09-20 22:44:02,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:07,124 INFO L130 PetriNetUnfolder]: 2247/18862 cut-off events. [2022-09-20 22:44:07,124 INFO L131 PetriNetUnfolder]: For 15826/16511 co-relation queries the response was YES. [2022-09-20 22:44:07,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33569 conditions, 18862 events. 2247/18862 cut-off events. For 15826/16511 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 235363 event pairs, 44 based on Foata normal form. 509/18477 useless extension candidates. Maximal degree in co-relation 33525. Up to 1269 conditions per place. [2022-09-20 22:44:07,342 INFO L137 encePairwiseOnDemand]: 359/371 looper letters, 92 selfloop transitions, 33 changer transitions 0/542 dead transitions. [2022-09-20 22:44:07,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 542 transitions, 2532 flow [2022-09-20 22:44:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:44:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:44:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4263 transitions. [2022-09-20 22:44:07,347 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8838896952104499 [2022-09-20 22:44:07,347 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4263 transitions. [2022-09-20 22:44:07,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4263 transitions. [2022-09-20 22:44:07,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:44:07,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4263 transitions. [2022-09-20 22:44:07,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 327.9230769230769) internal successors, (4263), 13 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:07,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:07,358 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:07,358 INFO L175 Difference]: Start difference. First operand has 422 places, 448 transitions, 1988 flow. Second operand 13 states and 4263 transitions. [2022-09-20 22:44:07,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 542 transitions, 2532 flow [2022-09-20 22:44:07,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 542 transitions, 2512 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-09-20 22:44:07,465 INFO L231 Difference]: Finished difference. Result has 440 places, 476 transitions, 2162 flow [2022-09-20 22:44:07,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2162, PETRI_PLACES=440, PETRI_TRANSITIONS=476} [2022-09-20 22:44:07,465 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 104 predicate places. [2022-09-20 22:44:07,466 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 476 transitions, 2162 flow [2022-09-20 22:44:07,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:07,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:44:07,466 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:44:07,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-20 22:44:07,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-20 22:44:07,679 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:44:07,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:44:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1032167023, now seen corresponding path program 3 times [2022-09-20 22:44:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:44:07,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563519907] [2022-09-20 22:44:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:07,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:44:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:44:07,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:44:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563519907] [2022-09-20 22:44:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563519907] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:44:07,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078654707] [2022-09-20 22:44:07,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 22:44:07,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:44:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:44:07,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:44:07,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-20 22:44:07,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-20 22:44:07,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:44:07,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-20 22:44:07,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:44:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-09-20 22:44:07,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 22:44:07,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078654707] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:44:07,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 22:44:07,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-09-20 22:44:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86739737] [2022-09-20 22:44:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:44:07,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:44:07,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:44:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:44:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-09-20 22:44:07,918 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-09-20 22:44:07,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 476 transitions, 2162 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:07,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:44:07,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-09-20 22:44:07,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:11,881 INFO L130 PetriNetUnfolder]: 1945/15662 cut-off events. [2022-09-20 22:44:11,882 INFO L131 PetriNetUnfolder]: For 12353/13291 co-relation queries the response was YES. [2022-09-20 22:44:12,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27904 conditions, 15662 events. 1945/15662 cut-off events. For 12353/13291 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 185165 event pairs, 580 based on Foata normal form. 390/15266 useless extension candidates. Maximal degree in co-relation 27853. Up to 1244 conditions per place. [2022-09-20 22:44:12,100 INFO L137 encePairwiseOnDemand]: 362/371 looper letters, 119 selfloop transitions, 27 changer transitions 0/563 dead transitions. [2022-09-20 22:44:12,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 563 transitions, 2806 flow [2022-09-20 22:44:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:44:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:44:12,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2964 transitions. [2022-09-20 22:44:12,103 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8876909254267745 [2022-09-20 22:44:12,103 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2964 transitions. [2022-09-20 22:44:12,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2964 transitions. [2022-09-20 22:44:12,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:44:12,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2964 transitions. [2022-09-20 22:44:12,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 329.3333333333333) internal successors, (2964), 9 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:12,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:12,109 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:12,109 INFO L175 Difference]: Start difference. First operand has 440 places, 476 transitions, 2162 flow. Second operand 9 states and 2964 transitions. [2022-09-20 22:44:12,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 563 transitions, 2806 flow [2022-09-20 22:44:12,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 563 transitions, 2806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:44:12,170 INFO L231 Difference]: Finished difference. Result has 453 places, 496 transitions, 2356 flow [2022-09-20 22:44:12,170 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2356, PETRI_PLACES=453, PETRI_TRANSITIONS=496} [2022-09-20 22:44:12,170 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 117 predicate places. [2022-09-20 22:44:12,171 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 496 transitions, 2356 flow [2022-09-20 22:44:12,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:12,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:44:12,171 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:44:12,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-20 22:44:12,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:44:12,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:44:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:44:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash -630932529, now seen corresponding path program 4 times [2022-09-20 22:44:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:44:12,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500956507] [2022-09-20 22:44:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:12,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:44:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:44:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:44:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500956507] [2022-09-20 22:44:12,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500956507] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:44:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093111850] [2022-09-20 22:44:12,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 22:44:12,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:44:12,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:44:12,456 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:44:12,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-20 22:44:12,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 22:44:12,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:44:12,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 22:44:12,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:44:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:44:12,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 22:44:12,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093111850] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:44:12,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 22:44:12,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-09-20 22:44:12,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484738252] [2022-09-20 22:44:12,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:44:12,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:44:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:44:12,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:44:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:44:12,811 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-09-20 22:44:12,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 496 transitions, 2356 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:12,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:44:12,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-09-20 22:44:12,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:17,667 INFO L130 PetriNetUnfolder]: 2625/20896 cut-off events. [2022-09-20 22:44:17,667 INFO L131 PetriNetUnfolder]: For 29732/31517 co-relation queries the response was YES. [2022-09-20 22:44:17,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41192 conditions, 20896 events. 2625/20896 cut-off events. For 29732/31517 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 271830 event pairs, 689 based on Foata normal form. 665/20654 useless extension candidates. Maximal degree in co-relation 41135. Up to 1481 conditions per place. [2022-09-20 22:44:18,020 INFO L137 encePairwiseOnDemand]: 362/371 looper letters, 93 selfloop transitions, 42 changer transitions 2/549 dead transitions. [2022-09-20 22:44:18,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 549 transitions, 2994 flow [2022-09-20 22:44:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 22:44:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 22:44:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2369 transitions. [2022-09-20 22:44:18,025 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9122063919907586 [2022-09-20 22:44:18,025 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2369 transitions. [2022-09-20 22:44:18,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2369 transitions. [2022-09-20 22:44:18,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:44:18,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2369 transitions. [2022-09-20 22:44:18,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.42857142857144) internal successors, (2369), 7 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:18,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:18,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 371.0) internal successors, (2968), 8 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:18,030 INFO L175 Difference]: Start difference. First operand has 453 places, 496 transitions, 2356 flow. Second operand 7 states and 2369 transitions. [2022-09-20 22:44:18,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 549 transitions, 2994 flow [2022-09-20 22:44:18,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 549 transitions, 2980 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-09-20 22:44:18,162 INFO L231 Difference]: Finished difference. Result has 462 places, 502 transitions, 2503 flow [2022-09-20 22:44:18,162 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2318, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2503, PETRI_PLACES=462, PETRI_TRANSITIONS=502} [2022-09-20 22:44:18,163 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 126 predicate places. [2022-09-20 22:44:18,163 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 502 transitions, 2503 flow [2022-09-20 22:44:18,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:18,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:44:18,164 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:44:18,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-20 22:44:18,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:44:18,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:44:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:44:18,380 INFO L85 PathProgramCache]: Analyzing trace with hash -200115521, now seen corresponding path program 5 times [2022-09-20 22:44:18,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:44:18,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624220173] [2022-09-20 22:44:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:18,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:44:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:44:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:44:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624220173] [2022-09-20 22:44:18,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624220173] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:44:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071585893] [2022-09-20 22:44:18,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-20 22:44:18,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:44:18,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:44:18,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:44:18,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-20 22:44:18,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-09-20 22:44:18,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 22:44:18,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 22:44:18,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:44:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:44:18,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:44:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-09-20 22:44:18,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071585893] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 22:44:18,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 22:44:18,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2022-09-20 22:44:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469130200] [2022-09-20 22:44:18,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:44:18,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:44:18,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:44:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:44:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:44:18,997 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 371 [2022-09-20 22:44:18,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 502 transitions, 2503 flow. Second operand has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:18,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:44:18,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 371 [2022-09-20 22:44:18,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:23,972 INFO L130 PetriNetUnfolder]: 2594/20803 cut-off events. [2022-09-20 22:44:23,972 INFO L131 PetriNetUnfolder]: For 35608/37098 co-relation queries the response was YES. [2022-09-20 22:44:24,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42554 conditions, 20803 events. 2594/20803 cut-off events. For 35608/37098 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 268889 event pairs, 537 based on Foata normal form. 682/20604 useless extension candidates. Maximal degree in co-relation 42493. Up to 1246 conditions per place. [2022-09-20 22:44:24,234 INFO L137 encePairwiseOnDemand]: 360/371 looper letters, 61 selfloop transitions, 75 changer transitions 0/548 dead transitions. [2022-09-20 22:44:24,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 548 transitions, 3126 flow [2022-09-20 22:44:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 22:44:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 22:44:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2036 transitions. [2022-09-20 22:44:24,236 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9146451033243486 [2022-09-20 22:44:24,236 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2036 transitions. [2022-09-20 22:44:24,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2036 transitions. [2022-09-20 22:44:24,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:44:24,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2036 transitions. [2022-09-20 22:44:24,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 339.3333333333333) internal successors, (2036), 6 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:24,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:24,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:24,239 INFO L175 Difference]: Start difference. First operand has 462 places, 502 transitions, 2503 flow. Second operand 6 states and 2036 transitions. [2022-09-20 22:44:24,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 548 transitions, 3126 flow [2022-09-20 22:44:24,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 548 transitions, 3050 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-09-20 22:44:24,483 INFO L231 Difference]: Finished difference. Result has 468 places, 518 transitions, 2886 flow [2022-09-20 22:44:24,483 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2886, PETRI_PLACES=468, PETRI_TRANSITIONS=518} [2022-09-20 22:44:24,484 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 132 predicate places. [2022-09-20 22:44:24,484 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 518 transitions, 2886 flow [2022-09-20 22:44:24,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 331.2) internal successors, (1656), 5 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:24,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:44:24,484 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:44:24,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-09-20 22:44:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-20 22:44:24,689 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:44:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:44:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1348040200, now seen corresponding path program 1 times [2022-09-20 22:44:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:44:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848469169] [2022-09-20 22:44:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:44:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-09-20 22:44:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:44:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848469169] [2022-09-20 22:44:24,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848469169] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 22:44:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173664456] [2022-09-20 22:44:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:24,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 22:44:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:44:24,762 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 22:44:24,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-20 22:44:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:24,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-20 22:44:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 22:44:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-09-20 22:44:25,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 22:44:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-09-20 22:44:25,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173664456] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 22:44:25,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 22:44:25,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-09-20 22:44:25,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498613977] [2022-09-20 22:44:25,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 22:44:25,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 22:44:25,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:44:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 22:44:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-09-20 22:44:25,103 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 371 [2022-09-20 22:44:25,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 518 transitions, 2886 flow. Second operand has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:25,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:44:25,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 371 [2022-09-20 22:44:25,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:30,925 INFO L130 PetriNetUnfolder]: 2647/21832 cut-off events. [2022-09-20 22:44:30,925 INFO L131 PetriNetUnfolder]: For 35511/36276 co-relation queries the response was YES. [2022-09-20 22:44:31,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45399 conditions, 21832 events. 2647/21832 cut-off events. For 35511/36276 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 289229 event pairs, 292 based on Foata normal form. 492/20981 useless extension candidates. Maximal degree in co-relation 45336. Up to 1162 conditions per place. [2022-09-20 22:44:31,241 INFO L137 encePairwiseOnDemand]: 363/371 looper letters, 91 selfloop transitions, 20 changer transitions 2/574 dead transitions. [2022-09-20 22:44:31,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 574 transitions, 3486 flow [2022-09-20 22:44:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:44:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:44:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4357 transitions. [2022-09-20 22:44:31,248 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9033796392286958 [2022-09-20 22:44:31,248 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4357 transitions. [2022-09-20 22:44:31,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4357 transitions. [2022-09-20 22:44:31,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:44:31,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4357 transitions. [2022-09-20 22:44:31,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 335.15384615384613) internal successors, (4357), 13 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:31,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:31,256 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:31,256 INFO L175 Difference]: Start difference. First operand has 468 places, 518 transitions, 2886 flow. Second operand 13 states and 4357 transitions. [2022-09-20 22:44:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 574 transitions, 3486 flow [2022-09-20 22:44:31,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 574 transitions, 3446 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:44:31,447 INFO L231 Difference]: Finished difference. Result has 482 places, 534 transitions, 3085 flow [2022-09-20 22:44:31,447 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3085, PETRI_PLACES=482, PETRI_TRANSITIONS=534} [2022-09-20 22:44:31,448 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 146 predicate places. [2022-09-20 22:44:31,448 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 534 transitions, 3085 flow [2022-09-20 22:44:31,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 333.0) internal successors, (3663), 11 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:31,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:44:31,448 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:44:31,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-20 22:44:31,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-20 22:44:31,664 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:44:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:44:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash 66586260, now seen corresponding path program 1 times [2022-09-20 22:44:31,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:44:31,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496129960] [2022-09-20 22:44:31,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:31,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:44:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-09-20 22:44:31,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:44:31,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496129960] [2022-09-20 22:44:31,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496129960] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:44:31,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:44:31,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:44:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872004863] [2022-09-20 22:44:31,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:44:31,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:44:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:44:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:44:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:44:31,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 371 [2022-09-20 22:44:31,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 534 transitions, 3085 flow. Second operand has 7 states, 7 states have (on average 317.42857142857144) internal successors, (2222), 7 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:31,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:44:31,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 371 [2022-09-20 22:44:31,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:40,627 INFO L130 PetriNetUnfolder]: 5190/29799 cut-off events. [2022-09-20 22:44:40,628 INFO L131 PetriNetUnfolder]: For 39401/41414 co-relation queries the response was YES. [2022-09-20 22:44:41,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63805 conditions, 29799 events. 5190/29799 cut-off events. For 39401/41414 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 362482 event pairs, 1816 based on Foata normal form. 190/28938 useless extension candidates. Maximal degree in co-relation 63740. Up to 3540 conditions per place. [2022-09-20 22:44:41,253 INFO L137 encePairwiseOnDemand]: 361/371 looper letters, 159 selfloop transitions, 37 changer transitions 0/645 dead transitions. [2022-09-20 22:44:41,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 645 transitions, 3977 flow [2022-09-20 22:44:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:44:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:44:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3581 transitions. [2022-09-20 22:44:41,256 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8774810095564812 [2022-09-20 22:44:41,256 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3581 transitions. [2022-09-20 22:44:41,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3581 transitions. [2022-09-20 22:44:41,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:44:41,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3581 transitions. [2022-09-20 22:44:41,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 325.54545454545456) internal successors, (3581), 11 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:41,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:41,261 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:41,261 INFO L175 Difference]: Start difference. First operand has 482 places, 534 transitions, 3085 flow. Second operand 11 states and 3581 transitions. [2022-09-20 22:44:41,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 645 transitions, 3977 flow [2022-09-20 22:44:41,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 645 transitions, 3961 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-09-20 22:44:41,457 INFO L231 Difference]: Finished difference. Result has 493 places, 546 transitions, 3239 flow [2022-09-20 22:44:41,458 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=3069, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3239, PETRI_PLACES=493, PETRI_TRANSITIONS=546} [2022-09-20 22:44:41,458 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 157 predicate places. [2022-09-20 22:44:41,458 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 546 transitions, 3239 flow [2022-09-20 22:44:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.42857142857144) internal successors, (2222), 7 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:41,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:44:41,459 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:44:41,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 22:44:41,459 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:44:41,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:44:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash 207618488, now seen corresponding path program 2 times [2022-09-20 22:44:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:44:41,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419743207] [2022-09-20 22:44:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:44:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:44:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:44:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-09-20 22:44:41,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:44:41,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419743207] [2022-09-20 22:44:41,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419743207] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:44:41,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:44:41,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:44:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066943523] [2022-09-20 22:44:41,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:44:41,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:44:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:44:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:44:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:44:41,571 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 371 [2022-09-20 22:44:41,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 546 transitions, 3239 flow. Second operand has 7 states, 7 states have (on average 317.42857142857144) internal successors, (2222), 7 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:44:41,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:44:41,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 371 [2022-09-20 22:44:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:44:59,000 INFO L130 PetriNetUnfolder]: 7821/56837 cut-off events. [2022-09-20 22:44:59,001 INFO L131 PetriNetUnfolder]: For 92479/94946 co-relation queries the response was YES. [2022-09-20 22:45:00,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124629 conditions, 56837 events. 7821/56837 cut-off events. For 92479/94946 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 815285 event pairs, 1628 based on Foata normal form. 593/55589 useless extension candidates. Maximal degree in co-relation 124561. Up to 3688 conditions per place. [2022-09-20 22:45:00,633 INFO L137 encePairwiseOnDemand]: 354/371 looper letters, 149 selfloop transitions, 94 changer transitions 10/702 dead transitions. [2022-09-20 22:45:00,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 702 transitions, 4609 flow [2022-09-20 22:45:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:45:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:45:00,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4569 transitions. [2022-09-20 22:45:00,636 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.879668848671544 [2022-09-20 22:45:00,636 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4569 transitions. [2022-09-20 22:45:00,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4569 transitions. [2022-09-20 22:45:00,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:00,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4569 transitions. [2022-09-20 22:45:00,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 326.35714285714283) internal successors, (4569), 14 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:00,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 371.0) internal successors, (5565), 15 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:00,644 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 371.0) internal successors, (5565), 15 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:00,644 INFO L175 Difference]: Start difference. First operand has 493 places, 546 transitions, 3239 flow. Second operand 14 states and 4569 transitions. [2022-09-20 22:45:00,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 702 transitions, 4609 flow [2022-09-20 22:45:01,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 702 transitions, 4570 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-20 22:45:01,773 INFO L231 Difference]: Finished difference. Result has 514 places, 585 transitions, 3902 flow [2022-09-20 22:45:01,773 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3902, PETRI_PLACES=514, PETRI_TRANSITIONS=585} [2022-09-20 22:45:01,774 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 178 predicate places. [2022-09-20 22:45:01,774 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 585 transitions, 3902 flow [2022-09-20 22:45:01,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.42857142857144) internal successors, (2222), 7 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:01,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:01,774 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:01,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 22:45:01,775 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:01,775 INFO L85 PathProgramCache]: Analyzing trace with hash 831482358, now seen corresponding path program 3 times [2022-09-20 22:45:01,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:01,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373408273] [2022-09-20 22:45:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:01,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-09-20 22:45:01,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:01,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373408273] [2022-09-20 22:45:01,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373408273] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:01,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:01,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:45:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594745755] [2022-09-20 22:45:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:01,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:45:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:01,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:45:01,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:45:01,906 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 371 [2022-09-20 22:45:01,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 585 transitions, 3902 flow. Second operand has 7 states, 7 states have (on average 317.42857142857144) internal successors, (2222), 7 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:01,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:01,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 371 [2022-09-20 22:45:01,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:45:18,288 INFO L130 PetriNetUnfolder]: 7645/49980 cut-off events. [2022-09-20 22:45:18,288 INFO L131 PetriNetUnfolder]: For 109215/113649 co-relation queries the response was YES. [2022-09-20 22:45:19,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117076 conditions, 49980 events. 7645/49980 cut-off events. For 109215/113649 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 687010 event pairs, 2465 based on Foata normal form. 536/48820 useless extension candidates. Maximal degree in co-relation 116999. Up to 4778 conditions per place. [2022-09-20 22:45:19,944 INFO L137 encePairwiseOnDemand]: 359/371 looper letters, 177 selfloop transitions, 70 changer transitions 2/698 dead transitions. [2022-09-20 22:45:19,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 698 transitions, 5215 flow [2022-09-20 22:45:19,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 22:45:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 22:45:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2631 transitions. [2022-09-20 22:45:19,946 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.886455525606469 [2022-09-20 22:45:19,946 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2631 transitions. [2022-09-20 22:45:19,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2631 transitions. [2022-09-20 22:45:19,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:45:19,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2631 transitions. [2022-09-20 22:45:19,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 328.875) internal successors, (2631), 8 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:19,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 371.0) internal successors, (3339), 9 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:19,950 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 371.0) internal successors, (3339), 9 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:19,950 INFO L175 Difference]: Start difference. First operand has 514 places, 585 transitions, 3902 flow. Second operand 8 states and 2631 transitions. [2022-09-20 22:45:19,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 698 transitions, 5215 flow [2022-09-20 22:45:20,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 698 transitions, 5173 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-09-20 22:45:20,947 INFO L231 Difference]: Finished difference. Result has 520 places, 615 transitions, 4477 flow [2022-09-20 22:45:20,947 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4477, PETRI_PLACES=520, PETRI_TRANSITIONS=615} [2022-09-20 22:45:20,948 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 184 predicate places. [2022-09-20 22:45:20,948 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 615 transitions, 4477 flow [2022-09-20 22:45:20,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.42857142857144) internal successors, (2222), 7 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:20,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:45:20,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:45:20,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 22:45:20,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 22:45:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:45:20,949 INFO L85 PathProgramCache]: Analyzing trace with hash -340808418, now seen corresponding path program 4 times [2022-09-20 22:45:20,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:45:20,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046334148] [2022-09-20 22:45:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:45:20,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:45:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:45:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-09-20 22:45:21,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:45:21,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046334148] [2022-09-20 22:45:21,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046334148] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:45:21,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:45:21,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:45:21,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422642073] [2022-09-20 22:45:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:45:21,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:45:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:45:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:45:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:45:21,084 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 371 [2022-09-20 22:45:21,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 615 transitions, 4477 flow. Second operand has 7 states, 7 states have (on average 317.42857142857144) internal successors, (2222), 7 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:45:21,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:45:21,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 371 [2022-09-20 22:45:21,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand