/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/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 23:17:06,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 23:17:06,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 23:17:06,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 23:17:06,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 23:17:06,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 23:17:06,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 23:17:06,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 23:17:06,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 23:17:06,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 23:17:06,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 23:17:06,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 23:17:06,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 23:17:06,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 23:17:06,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 23:17:06,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 23:17:06,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 23:17:06,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 23:17:06,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 23:17:06,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 23:17:06,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 23:17:06,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 23:17:06,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 23:17:06,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 23:17:06,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 23:17:06,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 23:17:06,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 23:17:06,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 23:17:06,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 23:17:06,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 23:17:06,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 23:17:06,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 23:17:06,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 23:17:06,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 23:17:06,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 23:17:06,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 23:17:06,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 23:17:06,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 23:17:06,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 23:17:06,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 23:17:06,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 23:17:06,600 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 23:17:06,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 23:17:06,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 23:17:06,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 23:17:06,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 23:17:06,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 23:17:06,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 23:17:06,620 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 23:17:06,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 23:17:06,620 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 23:17:06,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 23:17:06,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 23:17:06,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 23:17:06,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 23:17:06,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 23:17:06,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 23:17:06,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 23:17:06,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 23:17:06,622 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 23:17:06,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 23:17:06,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 23:17:06,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 23:17:06,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 23:17:06,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 23:17:06,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:17:06,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 23:17:06,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 23:17:06,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 23:17:06,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 23:17:06,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 23:17:06,623 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 23:17:06,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 23:17:06,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 23:17:06,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 23:17:06,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 23:17:06,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 23:17:06,828 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 23:17:06,828 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 23:17:06,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2022-09-20 23:17:06,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a098d8d2/c3839846b5124204bb3f9459d572c37c/FLAG2762fd8fa [2022-09-20 23:17:07,257 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 23:17:07,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2022-09-20 23:17:07,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a098d8d2/c3839846b5124204bb3f9459d572c37c/FLAG2762fd8fa [2022-09-20 23:17:07,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a098d8d2/c3839846b5124204bb3f9459d572c37c [2022-09-20 23:17:07,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 23:17:07,281 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 23:17:07,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 23:17:07,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 23:17:07,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 23:17:07,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50bf8c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07, skipping insertion in model container [2022-09-20 23:17:07,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 23:17:07,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 23:17:07,507 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/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-09-20 23:17:07,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:17:07,524 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 23:17:07,562 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/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-09-20 23:17:07,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 23:17:07,577 INFO L208 MainTranslator]: Completed translation [2022-09-20 23:17:07,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07 WrapperNode [2022-09-20 23:17:07,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 23:17:07,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 23:17:07,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 23:17:07,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 23:17:07,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,635 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 303 [2022-09-20 23:17:07,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 23:17:07,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 23:17:07,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 23:17:07,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 23:17:07,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 23:17:07,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 23:17:07,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 23:17:07,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 23:17:07,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (1/1) ... [2022-09-20 23:17:07,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 23:17:07,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:17:07,713 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 23:17:07,732 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 23:17:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 23:17:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 23:17:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 23:17:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 23:17:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 23:17:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 23:17:07,748 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 23:17:07,748 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 23:17:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 23:17:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 23:17:07,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 23:17:07,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 23:17:07,750 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 23:17:07,839 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 23:17:07,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 23:17:08,159 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 23:17:08,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 23:17:08,286 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 23:17:08,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:17:08 BoogieIcfgContainer [2022-09-20 23:17:08,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 23:17:08,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 23:17:08,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 23:17:08,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 23:17:08,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 11:17:07" (1/3) ... [2022-09-20 23:17:08,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0c8283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:17:08, skipping insertion in model container [2022-09-20 23:17:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 11:17:07" (2/3) ... [2022-09-20 23:17:08,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0c8283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 11:17:08, skipping insertion in model container [2022-09-20 23:17:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 11:17:08" (3/3) ... [2022-09-20 23:17:08,296 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-09-20 23:17:08,311 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 23:17:08,311 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 23:17:08,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 23:17:08,366 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 23:17:08,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 229 transitions, 490 flow [2022-09-20 23:17:08,484 INFO L130 PetriNetUnfolder]: 18/225 cut-off events. [2022-09-20 23:17:08,484 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:17:08,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 225 events. 18/225 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2022-09-20 23:17:08,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 229 transitions, 490 flow [2022-09-20 23:17:08,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 212 transitions, 448 flow [2022-09-20 23:17:08,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 23:17:08,530 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;@1829e18b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 23:17:08,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 23:17:08,588 INFO L130 PetriNetUnfolder]: 18/211 cut-off events. [2022-09-20 23:17:08,588 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 23:17:08,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:08,589 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] [2022-09-20 23:17:08,589 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 2 more)] === [2022-09-20 23:17:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1685292627, now seen corresponding path program 1 times [2022-09-20 23:17:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:08,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921206195] [2022-09-20 23:17:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:08,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:08,858 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 23:17:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921206195] [2022-09-20 23:17:08,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921206195] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:08,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:08,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 23:17:08,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064696325] [2022-09-20 23:17:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:08,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 23:17:08,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 23:17:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 23:17:08,892 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 229 [2022-09-20 23:17:08,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 212 transitions, 448 flow. Second operand has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:08,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:08,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 229 [2022-09-20 23:17:08,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:09,033 INFO L130 PetriNetUnfolder]: 123/515 cut-off events. [2022-09-20 23:17:09,033 INFO L131 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-09-20 23:17:09,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 515 events. 123/515 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1728 event pairs, 51 based on Foata normal form. 125/580 useless extension candidates. Maximal degree in co-relation 504. Up to 163 conditions per place. [2022-09-20 23:17:09,041 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 12 selfloop transitions, 0 changer transitions 6/200 dead transitions. [2022-09-20 23:17:09,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 200 transitions, 448 flow [2022-09-20 23:17:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 23:17:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 23:17:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 432 transitions. [2022-09-20 23:17:09,055 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9432314410480349 [2022-09-20 23:17:09,055 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 432 transitions. [2022-09-20 23:17:09,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 432 transitions. [2022-09-20 23:17:09,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:09,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 432 transitions. [2022-09-20 23:17:09,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,069 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,071 INFO L175 Difference]: Start difference. First operand has 207 places, 212 transitions, 448 flow. Second operand 2 states and 432 transitions. [2022-09-20 23:17:09,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 200 transitions, 448 flow [2022-09-20 23:17:09,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 200 transitions, 432 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 23:17:09,078 INFO L231 Difference]: Finished difference. Result has 200 places, 194 transitions, 396 flow [2022-09-20 23:17:09,079 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=396, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2022-09-20 23:17:09,082 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, -7 predicate places. [2022-09-20 23:17:09,082 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 396 flow [2022-09-20 23:17:09,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.5) internal successors, (419), 2 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:09,083 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] [2022-09-20 23:17:09,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 23:17:09,084 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 2 more)] === [2022-09-20 23:17:09,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:09,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1344941798, now seen corresponding path program 1 times [2022-09-20 23:17:09,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:09,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130567462] [2022-09-20 23:17:09,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:09,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:09,391 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 23:17:09,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:09,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130567462] [2022-09-20 23:17:09,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130567462] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:09,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:09,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 23:17:09,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631705670] [2022-09-20 23:17:09,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:09,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 23:17:09,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 23:17:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 23:17:09,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 229 [2022-09-20 23:17:09,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 396 flow. Second operand has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:09,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 229 [2022-09-20 23:17:09,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:09,541 INFO L130 PetriNetUnfolder]: 133/509 cut-off events. [2022-09-20 23:17:09,541 INFO L131 PetriNetUnfolder]: For 31/32 co-relation queries the response was YES. [2022-09-20 23:17:09,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 509 events. 133/509 cut-off events. For 31/32 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1585 event pairs, 14 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 724. Up to 133 conditions per place. [2022-09-20 23:17:09,546 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 42 selfloop transitions, 3 changer transitions 4/206 dead transitions. [2022-09-20 23:17:09,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 206 transitions, 523 flow [2022-09-20 23:17:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 23:17:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 23:17:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 915 transitions. [2022-09-20 23:17:09,548 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7991266375545851 [2022-09-20 23:17:09,548 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 915 transitions. [2022-09-20 23:17:09,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 915 transitions. [2022-09-20 23:17:09,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:09,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 915 transitions. [2022-09-20 23:17:09,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,553 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,554 INFO L175 Difference]: Start difference. First operand has 200 places, 194 transitions, 396 flow. Second operand 5 states and 915 transitions. [2022-09-20 23:17:09,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 206 transitions, 523 flow [2022-09-20 23:17:09,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 206 transitions, 523 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 23:17:09,561 INFO L231 Difference]: Finished difference. Result has 201 places, 196 transitions, 419 flow [2022-09-20 23:17:09,562 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2022-09-20 23:17:09,562 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2022-09-20 23:17:09,562 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 419 flow [2022-09-20 23:17:09,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.6) internal successors, (898), 5 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:09,563 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] [2022-09-20 23:17:09,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 23:17:09,564 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 2 more)] === [2022-09-20 23:17:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:09,565 INFO L85 PathProgramCache]: Analyzing trace with hash 19603819, now seen corresponding path program 1 times [2022-09-20 23:17:09,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:09,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299537648] [2022-09-20 23:17:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:09,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:17:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:09,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299537648] [2022-09-20 23:17:09,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299537648] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:09,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:09,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 23:17:09,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171868094] [2022-09-20 23:17:09,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:09,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 23:17:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:09,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 23:17:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 23:17:09,672 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2022-09-20 23:17:09,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:09,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2022-09-20 23:17:09,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:09,778 INFO L130 PetriNetUnfolder]: 208/754 cut-off events. [2022-09-20 23:17:09,778 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-09-20 23:17:09,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 754 events. 208/754 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3323 event pairs, 75 based on Foata normal form. 12/670 useless extension candidates. Maximal degree in co-relation 1178. Up to 207 conditions per place. [2022-09-20 23:17:09,783 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 30 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2022-09-20 23:17:09,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 208 transitions, 519 flow [2022-09-20 23:17:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 23:17:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 23:17:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2022-09-20 23:17:09,785 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9082969432314411 [2022-09-20 23:17:09,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2022-09-20 23:17:09,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2022-09-20 23:17:09,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:09,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2022-09-20 23:17:09,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,788 INFO L175 Difference]: Start difference. First operand has 201 places, 196 transitions, 419 flow. Second operand 3 states and 624 transitions. [2022-09-20 23:17:09,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 208 transitions, 519 flow [2022-09-20 23:17:09,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 208 transitions, 511 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-09-20 23:17:09,791 INFO L231 Difference]: Finished difference. Result has 199 places, 197 transitions, 426 flow [2022-09-20 23:17:09,791 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=426, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2022-09-20 23:17:09,792 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, -8 predicate places. [2022-09-20 23:17:09,792 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 426 flow [2022-09-20 23:17:09,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:09,793 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] [2022-09-20 23:17:09,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 23:17:09,793 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 2 more)] === [2022-09-20 23:17:09,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:09,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1852690573, now seen corresponding path program 1 times [2022-09-20 23:17:09,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:09,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941685923] [2022-09-20 23:17:09,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:09,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:17:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:09,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941685923] [2022-09-20 23:17:09,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941685923] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:09,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:09,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 23:17:09,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208275206] [2022-09-20 23:17:09,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:09,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 23:17:09,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 23:17:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 23:17:09,860 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 229 [2022-09-20 23:17:09,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:09,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 229 [2022-09-20 23:17:09,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:09,965 INFO L130 PetriNetUnfolder]: 152/674 cut-off events. [2022-09-20 23:17:09,965 INFO L131 PetriNetUnfolder]: For 210/211 co-relation queries the response was YES. [2022-09-20 23:17:09,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 674 events. 152/674 cut-off events. For 210/211 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2853 event pairs, 47 based on Foata normal form. 12/606 useless extension candidates. Maximal degree in co-relation 1064. Up to 171 conditions per place. [2022-09-20 23:17:09,970 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/209 dead transitions. [2022-09-20 23:17:09,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 209 transitions, 535 flow [2022-09-20 23:17:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 23:17:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 23:17:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 623 transitions. [2022-09-20 23:17:09,972 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9068413391557496 [2022-09-20 23:17:09,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 623 transitions. [2022-09-20 23:17:09,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 623 transitions. [2022-09-20 23:17:09,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:09,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 623 transitions. [2022-09-20 23:17:09,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.66666666666666) internal successors, (623), 3 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,975 INFO L175 Difference]: Start difference. First operand has 199 places, 197 transitions, 426 flow. Second operand 3 states and 623 transitions. [2022-09-20 23:17:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 209 transitions, 535 flow [2022-09-20 23:17:09,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 209 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 23:17:09,979 INFO L231 Difference]: Finished difference. Result has 201 places, 198 transitions, 438 flow [2022-09-20 23:17:09,982 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2022-09-20 23:17:09,984 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, -6 predicate places. [2022-09-20 23:17:09,984 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 438 flow [2022-09-20 23:17:09,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:09,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:09,985 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] [2022-09-20 23:17:09,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 23:17:09,985 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 2 more)] === [2022-09-20 23:17:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash 520674874, now seen corresponding path program 1 times [2022-09-20 23:17:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:09,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173385985] [2022-09-20 23:17:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:17:10,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:10,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173385985] [2022-09-20 23:17:10,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173385985] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:10,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:10,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:17:10,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902081308] [2022-09-20 23:17:10,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:10,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:17:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:10,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:17:10,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:17:10,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2022-09-20 23:17:10,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:10,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2022-09-20 23:17:10,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:10,258 INFO L130 PetriNetUnfolder]: 107/708 cut-off events. [2022-09-20 23:17:10,258 INFO L131 PetriNetUnfolder]: For 229/230 co-relation queries the response was YES. [2022-09-20 23:17:10,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 708 events. 107/708 cut-off events. For 229/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2811 event pairs, 36 based on Foata normal form. 8/649 useless extension candidates. Maximal degree in co-relation 1135. Up to 155 conditions per place. [2022-09-20 23:17:10,263 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 60 selfloop transitions, 11 changer transitions 0/227 dead transitions. [2022-09-20 23:17:10,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 227 transitions, 659 flow [2022-09-20 23:17:10,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:17:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:17:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1668 transitions. [2022-09-20 23:17:10,265 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8093158660844251 [2022-09-20 23:17:10,266 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1668 transitions. [2022-09-20 23:17:10,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1668 transitions. [2022-09-20 23:17:10,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:10,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1668 transitions. [2022-09-20 23:17:10,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 185.33333333333334) internal successors, (1668), 9 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,272 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,272 INFO L175 Difference]: Start difference. First operand has 201 places, 198 transitions, 438 flow. Second operand 9 states and 1668 transitions. [2022-09-20 23:17:10,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 227 transitions, 659 flow [2022-09-20 23:17:10,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 227 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 23:17:10,276 INFO L231 Difference]: Finished difference. Result has 210 places, 202 transitions, 478 flow [2022-09-20 23:17:10,276 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=478, PETRI_PLACES=210, PETRI_TRANSITIONS=202} [2022-09-20 23:17:10,276 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 3 predicate places. [2022-09-20 23:17:10,276 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 202 transitions, 478 flow [2022-09-20 23:17:10,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:10,277 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] [2022-09-20 23:17:10,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 23:17:10,277 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 2 more)] === [2022-09-20 23:17:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:10,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1561507388, now seen corresponding path program 1 times [2022-09-20 23:17:10,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:10,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206344529] [2022-09-20 23:17:10,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:17:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:10,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206344529] [2022-09-20 23:17:10,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206344529] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:10,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:10,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 23:17:10,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638383562] [2022-09-20 23:17:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:10,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 23:17:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 23:17:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 23:17:10,347 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 229 [2022-09-20 23:17:10,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 202 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:10,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 229 [2022-09-20 23:17:10,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:10,502 INFO L130 PetriNetUnfolder]: 123/934 cut-off events. [2022-09-20 23:17:10,503 INFO L131 PetriNetUnfolder]: For 321/323 co-relation queries the response was YES. [2022-09-20 23:17:10,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 934 events. 123/934 cut-off events. For 321/323 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4545 event pairs, 42 based on Foata normal form. 15/868 useless extension candidates. Maximal degree in co-relation 1469. Up to 198 conditions per place. [2022-09-20 23:17:10,507 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 55 selfloop transitions, 8 changer transitions 0/219 dead transitions. [2022-09-20 23:17:10,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 219 transitions, 660 flow [2022-09-20 23:17:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 23:17:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 23:17:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1300 transitions. [2022-09-20 23:17:10,510 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.810979413599501 [2022-09-20 23:17:10,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1300 transitions. [2022-09-20 23:17:10,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1300 transitions. [2022-09-20 23:17:10,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:10,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1300 transitions. [2022-09-20 23:17:10,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.71428571428572) internal successors, (1300), 7 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,546 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,546 INFO L175 Difference]: Start difference. First operand has 210 places, 202 transitions, 478 flow. Second operand 7 states and 1300 transitions. [2022-09-20 23:17:10,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 219 transitions, 660 flow [2022-09-20 23:17:10,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 219 transitions, 651 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 23:17:10,550 INFO L231 Difference]: Finished difference. Result has 215 places, 204 transitions, 499 flow [2022-09-20 23:17:10,550 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=499, PETRI_PLACES=215, PETRI_TRANSITIONS=204} [2022-09-20 23:17:10,550 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 8 predicate places. [2022-09-20 23:17:10,551 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 204 transitions, 499 flow [2022-09-20 23:17:10,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:10,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:10,551 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] [2022-09-20 23:17:10,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 23:17:10,551 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 2 more)] === [2022-09-20 23:17:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1107755995, now seen corresponding path program 1 times [2022-09-20 23:17:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:10,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204867299] [2022-09-20 23:17:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:10,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:10,799 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 23:17:10,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:10,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204867299] [2022-09-20 23:17:10,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204867299] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:17:10,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433271812] [2022-09-20 23:17:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:10,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:17:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:17:10,804 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 23:17:10,805 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 23:17:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:10,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-20 23:17:10,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:17:11,406 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 23:17:11,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 23:17:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:17:11,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433271812] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 23:17:11,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 23:17:11,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 7] total 18 [2022-09-20 23:17:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257285041] [2022-09-20 23:17:11,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:11,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:17:11,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:17:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-09-20 23:17:11,683 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 229 [2022-09-20 23:17:11,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 204 transitions, 499 flow. Second operand has 9 states, 9 states have (on average 184.33333333333334) internal successors, (1659), 9 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:11,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:11,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 229 [2022-09-20 23:17:11,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:14,194 INFO L130 PetriNetUnfolder]: 11189/20977 cut-off events. [2022-09-20 23:17:14,194 INFO L131 PetriNetUnfolder]: For 5849/5849 co-relation queries the response was YES. [2022-09-20 23:17:14,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42836 conditions, 20977 events. 11189/20977 cut-off events. For 5849/5849 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 179917 event pairs, 569 based on Foata normal form. 0/17563 useless extension candidates. Maximal degree in co-relation 42825. Up to 2108 conditions per place. [2022-09-20 23:17:14,307 INFO L137 encePairwiseOnDemand]: 214/229 looper letters, 254 selfloop transitions, 57 changer transitions 5/481 dead transitions. [2022-09-20 23:17:14,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 481 transitions, 1945 flow [2022-09-20 23:17:14,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-20 23:17:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-20 23:17:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5007 transitions. [2022-09-20 23:17:14,315 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8409472623446422 [2022-09-20 23:17:14,315 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5007 transitions. [2022-09-20 23:17:14,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5007 transitions. [2022-09-20 23:17:14,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:14,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5007 transitions. [2022-09-20 23:17:14,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 192.57692307692307) internal successors, (5007), 26 states have internal predecessors, (5007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:14,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 229.0) internal successors, (6183), 27 states have internal predecessors, (6183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:14,331 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 229.0) internal successors, (6183), 27 states have internal predecessors, (6183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:14,331 INFO L175 Difference]: Start difference. First operand has 215 places, 204 transitions, 499 flow. Second operand 26 states and 5007 transitions. [2022-09-20 23:17:14,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 481 transitions, 1945 flow [2022-09-20 23:17:14,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 481 transitions, 1933 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 23:17:14,340 INFO L231 Difference]: Finished difference. Result has 255 places, 256 transitions, 907 flow [2022-09-20 23:17:14,341 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=907, PETRI_PLACES=255, PETRI_TRANSITIONS=256} [2022-09-20 23:17:14,341 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 48 predicate places. [2022-09-20 23:17:14,341 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 256 transitions, 907 flow [2022-09-20 23:17:14,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 184.33333333333334) internal successors, (1659), 9 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:14,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:14,342 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] [2022-09-20 23:17:14,364 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 23:17:14,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:17:14,556 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 2 more)] === [2022-09-20 23:17:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:14,556 INFO L85 PathProgramCache]: Analyzing trace with hash -543354103, now seen corresponding path program 2 times [2022-09-20 23:17:14,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:14,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520677332] [2022-09-20 23:17:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:14,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520677332] [2022-09-20 23:17:14,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520677332] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:14,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:14,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:17:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765005216] [2022-09-20 23:17:14,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:14,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:17:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:17:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:17:14,801 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-09-20 23:17:14,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 256 transitions, 907 flow. Second operand has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:14,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:14,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-09-20 23:17:14,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:17,214 INFO L130 PetriNetUnfolder]: 8264/17284 cut-off events. [2022-09-20 23:17:17,214 INFO L131 PetriNetUnfolder]: For 37565/38063 co-relation queries the response was YES. [2022-09-20 23:17:17,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49816 conditions, 17284 events. 8264/17284 cut-off events. For 37565/38063 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 158521 event pairs, 1513 based on Foata normal form. 50/16265 useless extension candidates. Maximal degree in co-relation 49786. Up to 5976 conditions per place. [2022-09-20 23:17:17,341 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 106 selfloop transitions, 18 changer transitions 10/309 dead transitions. [2022-09-20 23:17:17,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 309 transitions, 1414 flow [2022-09-20 23:17:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 23:17:17,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 23:17:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1559 transitions. [2022-09-20 23:17:17,344 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8509825327510917 [2022-09-20 23:17:17,344 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1559 transitions. [2022-09-20 23:17:17,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1559 transitions. [2022-09-20 23:17:17,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:17,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1559 transitions. [2022-09-20 23:17:17,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 194.875) internal successors, (1559), 8 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:17,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:17,350 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:17,350 INFO L175 Difference]: Start difference. First operand has 255 places, 256 transitions, 907 flow. Second operand 8 states and 1559 transitions. [2022-09-20 23:17:17,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 309 transitions, 1414 flow [2022-09-20 23:17:17,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 309 transitions, 1395 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-09-20 23:17:17,480 INFO L231 Difference]: Finished difference. Result has 261 places, 261 transitions, 981 flow [2022-09-20 23:17:17,481 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=981, PETRI_PLACES=261, PETRI_TRANSITIONS=261} [2022-09-20 23:17:17,481 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 54 predicate places. [2022-09-20 23:17:17,481 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 261 transitions, 981 flow [2022-09-20 23:17:17,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:17,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:17,482 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] [2022-09-20 23:17:17,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 23:17:17,482 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 2 more)] === [2022-09-20 23:17:17,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:17,483 INFO L85 PathProgramCache]: Analyzing trace with hash 416139307, now seen corresponding path program 3 times [2022-09-20 23:17:17,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:17,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439965154] [2022-09-20 23:17:17,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:17,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:17,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:17,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439965154] [2022-09-20 23:17:17,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439965154] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:17,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:17,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:17:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435126171] [2022-09-20 23:17:17,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:17,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:17:17,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:17,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:17:17,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:17:17,688 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-09-20 23:17:17,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 261 transitions, 981 flow. Second operand has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:17,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:17,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-09-20 23:17:17,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:20,431 INFO L130 PetriNetUnfolder]: 8294/18483 cut-off events. [2022-09-20 23:17:20,431 INFO L131 PetriNetUnfolder]: For 45322/45581 co-relation queries the response was YES. [2022-09-20 23:17:20,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56653 conditions, 18483 events. 8294/18483 cut-off events. For 45322/45581 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 179270 event pairs, 1552 based on Foata normal form. 237/17542 useless extension candidates. Maximal degree in co-relation 56620. Up to 6264 conditions per place. [2022-09-20 23:17:20,570 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 127 selfloop transitions, 27 changer transitions 12/343 dead transitions. [2022-09-20 23:17:20,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 343 transitions, 1764 flow [2022-09-20 23:17:20,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 23:17:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 23:17:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1801 transitions. [2022-09-20 23:17:20,574 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.873847646773411 [2022-09-20 23:17:20,574 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1801 transitions. [2022-09-20 23:17:20,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1801 transitions. [2022-09-20 23:17:20,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:20,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1801 transitions. [2022-09-20 23:17:20,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 200.11111111111111) internal successors, (1801), 9 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:20,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:20,586 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 229.0) internal successors, (2290), 10 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:20,586 INFO L175 Difference]: Start difference. First operand has 261 places, 261 transitions, 981 flow. Second operand 9 states and 1801 transitions. [2022-09-20 23:17:20,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 343 transitions, 1764 flow [2022-09-20 23:17:20,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 343 transitions, 1725 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-09-20 23:17:20,776 INFO L231 Difference]: Finished difference. Result has 270 places, 272 transitions, 1180 flow [2022-09-20 23:17:20,776 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1180, PETRI_PLACES=270, PETRI_TRANSITIONS=272} [2022-09-20 23:17:20,777 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 63 predicate places. [2022-09-20 23:17:20,777 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 272 transitions, 1180 flow [2022-09-20 23:17:20,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:20,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:20,778 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] [2022-09-20 23:17:20,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 23:17:20,778 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 2 more)] === [2022-09-20 23:17:20,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:20,779 INFO L85 PathProgramCache]: Analyzing trace with hash -274927473, now seen corresponding path program 4 times [2022-09-20 23:17:20,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:20,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796971946] [2022-09-20 23:17:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:20,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:20,933 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 23:17:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:20,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796971946] [2022-09-20 23:17:20,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796971946] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 23:17:20,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543244078] [2022-09-20 23:17:20,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 23:17:20,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 23:17:20,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 23:17:20,935 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 23:17:20,936 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 23:17:21,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 23:17:21,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 23:17:21,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-20 23:17:21,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 23:17:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:21,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-20 23:17:21,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543244078] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:21,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-20 23:17:21,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 13 [2022-09-20 23:17:21,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69022568] [2022-09-20 23:17:21,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:21,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:17:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:21,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:17:21,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-09-20 23:17:21,560 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-09-20 23:17:21,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 272 transitions, 1180 flow. Second operand has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:21,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:21,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-09-20 23:17:21,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:29,683 INFO L130 PetriNetUnfolder]: 28483/56999 cut-off events. [2022-09-20 23:17:29,683 INFO L131 PetriNetUnfolder]: For 196254/196254 co-relation queries the response was YES. [2022-09-20 23:17:30,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188130 conditions, 56999 events. 28483/56999 cut-off events. For 196254/196254 co-relation queries the response was YES. Maximal size of possible extension queue 2287. Compared 605041 event pairs, 6080 based on Foata normal form. 416/52748 useless extension candidates. Maximal degree in co-relation 188093. Up to 16869 conditions per place. [2022-09-20 23:17:30,284 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 192 selfloop transitions, 72 changer transitions 34/465 dead transitions. [2022-09-20 23:17:30,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 465 transitions, 3328 flow [2022-09-20 23:17:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 23:17:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 23:17:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2191 transitions. [2022-09-20 23:17:30,289 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.869789599047241 [2022-09-20 23:17:30,289 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2191 transitions. [2022-09-20 23:17:30,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2191 transitions. [2022-09-20 23:17:30,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:30,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2191 transitions. [2022-09-20 23:17:30,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 199.1818181818182) internal successors, (2191), 11 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:30,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:30,296 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:30,296 INFO L175 Difference]: Start difference. First operand has 270 places, 272 transitions, 1180 flow. Second operand 11 states and 2191 transitions. [2022-09-20 23:17:30,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 465 transitions, 3328 flow [2022-09-20 23:17:32,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 465 transitions, 3170 flow, removed 40 selfloop flow, removed 3 redundant places. [2022-09-20 23:17:32,502 INFO L231 Difference]: Finished difference. Result has 284 places, 320 transitions, 1994 flow [2022-09-20 23:17:32,502 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1994, PETRI_PLACES=284, PETRI_TRANSITIONS=320} [2022-09-20 23:17:32,502 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 77 predicate places. [2022-09-20 23:17:32,502 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 320 transitions, 1994 flow [2022-09-20 23:17:32,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:32,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:32,503 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] [2022-09-20 23:17:32,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 23:17:32,709 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,SelfDestructingSolverStorable9 [2022-09-20 23:17:32,710 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 2 more)] === [2022-09-20 23:17:32,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1268404059, now seen corresponding path program 5 times [2022-09-20 23:17:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:32,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503866867] [2022-09-20 23:17:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:32,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503866867] [2022-09-20 23:17:32,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503866867] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:32,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:32,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:17:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578502798] [2022-09-20 23:17:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:32,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:17:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:17:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:17:32,930 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 229 [2022-09-20 23:17:32,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 320 transitions, 1994 flow. Second operand has 9 states, 9 states have (on average 182.55555555555554) internal successors, (1643), 9 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:32,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:32,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 229 [2022-09-20 23:17:32,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:40,961 INFO L130 PetriNetUnfolder]: 20990/48333 cut-off events. [2022-09-20 23:17:40,962 INFO L131 PetriNetUnfolder]: For 188566/191670 co-relation queries the response was YES. [2022-09-20 23:17:41,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158173 conditions, 48333 events. 20990/48333 cut-off events. For 188566/191670 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 566489 event pairs, 3637 based on Foata normal form. 522/44645 useless extension candidates. Maximal degree in co-relation 158129. Up to 9877 conditions per place. [2022-09-20 23:17:41,602 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 199 selfloop transitions, 150 changer transitions 26/565 dead transitions. [2022-09-20 23:17:41,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 565 transitions, 4853 flow [2022-09-20 23:17:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 23:17:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 23:17:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2686 transitions. [2022-09-20 23:17:41,606 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8378041172800998 [2022-09-20 23:17:41,607 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2686 transitions. [2022-09-20 23:17:41,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2686 transitions. [2022-09-20 23:17:41,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:41,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2686 transitions. [2022-09-20 23:17:41,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 191.85714285714286) internal successors, (2686), 14 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:41,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 229.0) internal successors, (3435), 15 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:41,615 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 229.0) internal successors, (3435), 15 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:41,615 INFO L175 Difference]: Start difference. First operand has 284 places, 320 transitions, 1994 flow. Second operand 14 states and 2686 transitions. [2022-09-20 23:17:41,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 565 transitions, 4853 flow [2022-09-20 23:17:43,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 565 transitions, 4747 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-09-20 23:17:43,275 INFO L231 Difference]: Finished difference. Result has 305 places, 406 transitions, 3576 flow [2022-09-20 23:17:43,275 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3576, PETRI_PLACES=305, PETRI_TRANSITIONS=406} [2022-09-20 23:17:43,276 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 98 predicate places. [2022-09-20 23:17:43,276 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 406 transitions, 3576 flow [2022-09-20 23:17:43,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 182.55555555555554) internal successors, (1643), 9 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:43,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:43,276 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] [2022-09-20 23:17:43,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 23:17:43,276 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 2 more)] === [2022-09-20 23:17:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash -273641045, now seen corresponding path program 6 times [2022-09-20 23:17:43,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:43,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917193115] [2022-09-20 23:17:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:43,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:43,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:43,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917193115] [2022-09-20 23:17:43,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917193115] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:43,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:43,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:17:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642963333] [2022-09-20 23:17:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:43,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:17:43,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:17:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:17:43,467 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-09-20 23:17:43,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 406 transitions, 3576 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:43,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:43,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-09-20 23:17:43,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:17:54,728 INFO L130 PetriNetUnfolder]: 24612/59809 cut-off events. [2022-09-20 23:17:54,728 INFO L131 PetriNetUnfolder]: For 306218/309171 co-relation queries the response was YES. [2022-09-20 23:17:55,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226271 conditions, 59809 events. 24612/59809 cut-off events. For 306218/309171 co-relation queries the response was YES. Maximal size of possible extension queue 2718. Compared 746324 event pairs, 4839 based on Foata normal form. 980/58643 useless extension candidates. Maximal degree in co-relation 226217. Up to 17682 conditions per place. [2022-09-20 23:17:55,661 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 205 selfloop transitions, 294 changer transitions 32/723 dead transitions. [2022-09-20 23:17:55,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 723 transitions, 8848 flow [2022-09-20 23:17:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 23:17:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 23:17:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2351 transitions. [2022-09-20 23:17:55,665 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8555312954876274 [2022-09-20 23:17:55,665 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2351 transitions. [2022-09-20 23:17:55,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2351 transitions. [2022-09-20 23:17:55,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:17:55,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2351 transitions. [2022-09-20 23:17:55,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 195.91666666666666) internal successors, (2351), 12 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:55,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:55,671 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 229.0) internal successors, (2977), 13 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:55,671 INFO L175 Difference]: Start difference. First operand has 305 places, 406 transitions, 3576 flow. Second operand 12 states and 2351 transitions. [2022-09-20 23:17:55,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 723 transitions, 8848 flow [2022-09-20 23:17:59,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 723 transitions, 8828 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-09-20 23:17:59,193 INFO L231 Difference]: Finished difference. Result has 323 places, 575 transitions, 7581 flow [2022-09-20 23:17:59,194 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=3558, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7581, PETRI_PLACES=323, PETRI_TRANSITIONS=575} [2022-09-20 23:17:59,194 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 116 predicate places. [2022-09-20 23:17:59,194 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 575 transitions, 7581 flow [2022-09-20 23:17:59,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:59,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:17:59,195 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] [2022-09-20 23:17:59,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 23:17:59,195 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 2 more)] === [2022-09-20 23:17:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:17:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1248382061, now seen corresponding path program 7 times [2022-09-20 23:17:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:17:59,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136091716] [2022-09-20 23:17:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:17:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:17:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:17:59,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 23:17:59,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:17:59,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136091716] [2022-09-20 23:17:59,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136091716] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:17:59,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:17:59,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 23:17:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979526654] [2022-09-20 23:17:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:17:59,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 23:17:59,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:17:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 23:17:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 23:17:59,329 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 229 [2022-09-20 23:17:59,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 575 transitions, 7581 flow. Second operand has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:17:59,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:17:59,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 229 [2022-09-20 23:17:59,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:18:14,306 INFO L130 PetriNetUnfolder]: 26162/65213 cut-off events. [2022-09-20 23:18:14,306 INFO L131 PetriNetUnfolder]: For 434509/437512 co-relation queries the response was YES. [2022-09-20 23:18:15,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264022 conditions, 65213 events. 26162/65213 cut-off events. For 434509/437512 co-relation queries the response was YES. Maximal size of possible extension queue 3109. Compared 840660 event pairs, 7427 based on Foata normal form. 669/63354 useless extension candidates. Maximal degree in co-relation 263959. Up to 19115 conditions per place. [2022-09-20 23:18:15,705 INFO L137 encePairwiseOnDemand]: 218/229 looper letters, 166 selfloop transitions, 422 changer transitions 97/877 dead transitions. [2022-09-20 23:18:15,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 877 transitions, 14003 flow [2022-09-20 23:18:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 23:18:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 23:18:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2143 transitions. [2022-09-20 23:18:15,707 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.850734418420008 [2022-09-20 23:18:15,707 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2143 transitions. [2022-09-20 23:18:15,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2143 transitions. [2022-09-20 23:18:15,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:18:15,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2143 transitions. [2022-09-20 23:18:15,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 194.8181818181818) internal successors, (2143), 11 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:18:15,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:18:15,712 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 229.0) internal successors, (2748), 12 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:18:15,712 INFO L175 Difference]: Start difference. First operand has 323 places, 575 transitions, 7581 flow. Second operand 11 states and 2143 transitions. [2022-09-20 23:18:15,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 877 transitions, 14003 flow [2022-09-20 23:18:21,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 877 transitions, 13772 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-09-20 23:18:21,943 INFO L231 Difference]: Finished difference. Result has 339 places, 707 transitions, 11576 flow [2022-09-20 23:18:21,944 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=7432, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11576, PETRI_PLACES=339, PETRI_TRANSITIONS=707} [2022-09-20 23:18:21,944 INFO L287 CegarLoopForPetriNet]: 207 programPoint places, 132 predicate places. [2022-09-20 23:18:21,944 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 707 transitions, 11576 flow [2022-09-20 23:18:21,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 186.5) internal successors, (1492), 8 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:18:21,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:18:21,945 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] [2022-09-20 23:18:21,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 23:18:21,945 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 2 more)] === [2022-09-20 23:18:21,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:18:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash -679957651, now seen corresponding path program 8 times [2022-09-20 23:18:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:18:21,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036195528] [2022-09-20 23:18:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:18:21,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:18:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:18:22,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 23:18:22,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:18:22,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036195528] [2022-09-20 23:18:22,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036195528] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:18:22,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:18:22,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 23:18:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726979713] [2022-09-20 23:18:22,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:18:22,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 23:18:22,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:18:22,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 23:18:22,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-20 23:18:22,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 229 [2022-09-20 23:18:22,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 707 transitions, 11576 flow. Second operand has 9 states, 9 states have (on average 189.66666666666666) internal successors, (1707), 9 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:18:22,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:18:22,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 229 [2022-09-20 23:18:22,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand