/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:01:36,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:01:36,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:01:36,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:01:36,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:01:36,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:01:36,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:01:36,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:01:36,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:01:36,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:01:36,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:01:36,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:01:36,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:01:36,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:01:36,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:01:36,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:01:36,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:01:36,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:01:36,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:01:36,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:01:36,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:01:36,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:01:36,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:01:36,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:01:36,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:01:36,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:01:36,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:01:36,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:01:36,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:01:36,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:01:36,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:01:36,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:01:36,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:01:36,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:01:36,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:01:36,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:01:36,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:01:36,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:01:36,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:01:36,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:01:36,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:01:36,671 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 [2022-12-06 17:01:36,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:01:36,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:01:36,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:01:36,696 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:01:36,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:01:36,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:01:36,697 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:01:36,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:01:36,698 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:01:36,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:01:36,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:01:36,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:01:36,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:01:36,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:01:36,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:01:36,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:01:36,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:01:36,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:01:36,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:01:36,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:01:36,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:01:36,980 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:01:36,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2022-12-06 17:01:37,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:01:38,244 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:01:38,245 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2022-12-06 17:01:38,267 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b72a4df58/70ed46d7c94a40ef8d12542fe809ab75/FLAGf59fcd816 [2022-12-06 17:01:38,281 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b72a4df58/70ed46d7c94a40ef8d12542fe809ab75 [2022-12-06 17:01:38,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:01:38,284 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:01:38,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:01:38,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:01:38,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:01:38,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2457f83d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38, skipping insertion in model container [2022-12-06 17:01:38,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:01:38,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:01:38,531 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-12-06 17:01:38,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:01:38,543 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:01:38,558 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c[2781,2794] [2022-12-06 17:01:38,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:01:38,573 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:01:38,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38 WrapperNode [2022-12-06 17:01:38,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:01:38,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:01:38,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:01:38,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:01:38,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,604 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 281 [2022-12-06 17:01:38,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:01:38,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:01:38,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:01:38,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:01:38,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,623 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:01:38,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:01:38,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:01:38,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:01:38,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (1/1) ... [2022-12-06 17:01:38,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:01:38,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:01:38,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 17:01:38,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 17:01:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:01:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:01:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:01:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:01:38,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:01:38,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:01:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:01:38,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:01:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 17:01:38,690 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 17:01:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:01:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 17:01:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:01:38,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:01:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:01:38,691 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:01:38,814 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:01:38,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:01:39,198 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:01:39,206 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:01:39,206 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-06 17:01:39,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:01:39 BoogieIcfgContainer [2022-12-06 17:01:39,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:01:39,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:01:39,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:01:39,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:01:39,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:01:38" (1/3) ... [2022-12-06 17:01:39,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162a9c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:01:39, skipping insertion in model container [2022-12-06 17:01:39,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:01:38" (2/3) ... [2022-12-06 17:01:39,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@162a9c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:01:39, skipping insertion in model container [2022-12-06 17:01:39,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:01:39" (3/3) ... [2022-12-06 17:01:39,212 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2022-12-06 17:01:39,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:01:39,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:01:39,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:01:39,310 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-06 17:01:39,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 318 transitions, 660 flow [2022-12-06 17:01:39,465 INFO L130 PetriNetUnfolder]: 29/315 cut-off events. [2022-12-06 17:01:39,466 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 17:01:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 315 events. 29/315 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 510 event pairs, 0 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 239. Up to 3 conditions per place. [2022-12-06 17:01:39,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 318 transitions, 660 flow [2022-12-06 17:01:39,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 305 transitions, 628 flow [2022-12-06 17:01:39,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:01:39,495 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;@1b0864d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:01:39,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 17:01:39,558 INFO L130 PetriNetUnfolder]: 29/304 cut-off events. [2022-12-06 17:01:39,558 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 17:01:39,558 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:39,559 INFO L213 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] [2022-12-06 17:01:39,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:01:39,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:39,564 INFO L85 PathProgramCache]: Analyzing trace with hash -801687797, now seen corresponding path program 1 times [2022-12-06 17:01:39,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:39,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940215584] [2022-12-06 17:01:39,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:39,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:41,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:41,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940215584] [2022-12-06 17:01:41,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940215584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:41,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:41,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-06 17:01:41,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535813340] [2022-12-06 17:01:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:41,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:01:41,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:01:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:01:41,605 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 318 [2022-12-06 17:01:41,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 305 transitions, 628 flow. Second operand has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:41,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:41,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 318 [2022-12-06 17:01:41,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:45,981 INFO L130 PetriNetUnfolder]: 1404/9226 cut-off events. [2022-12-06 17:01:45,981 INFO L131 PetriNetUnfolder]: For 600/624 co-relation queries the response was YES. [2022-12-06 17:01:46,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11523 conditions, 9226 events. 1404/9226 cut-off events. For 600/624 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 107388 event pairs, 706 based on Foata normal form. 551/8552 useless extension candidates. Maximal degree in co-relation 3801. Up to 500 conditions per place. [2022-12-06 17:01:46,032 INFO L137 encePairwiseOnDemand]: 252/318 looper letters, 209 selfloop transitions, 39 changer transitions 30/466 dead transitions. [2022-12-06 17:01:46,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 466 transitions, 1578 flow [2022-12-06 17:01:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 17:01:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 17:01:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9160 transitions. [2022-12-06 17:01:46,054 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6546598056032018 [2022-12-06 17:01:46,056 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 43 predicate places. [2022-12-06 17:01:46,056 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 466 transitions, 1578 flow [2022-12-06 17:01:46,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:46,059 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:46,060 INFO L213 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] [2022-12-06 17:01:46,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:01:46,060 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:01:46,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:46,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1677946439, now seen corresponding path program 2 times [2022-12-06 17:01:46,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:46,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197343956] [2022-12-06 17:01:46,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:46,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:47,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:47,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197343956] [2022-12-06 17:01:47,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197343956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:47,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:47,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-06 17:01:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731217126] [2022-12-06 17:01:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:47,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:01:47,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:01:47,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:01:47,253 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 318 [2022-12-06 17:01:47,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 466 transitions, 1578 flow. Second operand has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:47,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:47,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 318 [2022-12-06 17:01:47,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:52,860 INFO L130 PetriNetUnfolder]: 2194/14528 cut-off events. [2022-12-06 17:01:52,860 INFO L131 PetriNetUnfolder]: For 2264/6270 co-relation queries the response was YES. [2022-12-06 17:01:52,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21316 conditions, 14528 events. 2194/14528 cut-off events. For 2264/6270 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 182834 event pairs, 761 based on Foata normal form. 43/12568 useless extension candidates. Maximal degree in co-relation 7522. Up to 1328 conditions per place. [2022-12-06 17:01:52,968 INFO L137 encePairwiseOnDemand]: 271/318 looper letters, 323 selfloop transitions, 57 changer transitions 60/628 dead transitions. [2022-12-06 17:01:52,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 628 transitions, 3175 flow [2022-12-06 17:01:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-06 17:01:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-12-06 17:01:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 12597 transitions. [2022-12-06 17:01:52,989 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6493968450355707 [2022-12-06 17:01:52,990 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 103 predicate places. [2022-12-06 17:01:52,990 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 628 transitions, 3175 flow [2022-12-06 17:01:52,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:52,992 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:52,993 INFO L213 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] [2022-12-06 17:01:52,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:01:52,993 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:01:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1141009741, now seen corresponding path program 3 times [2022-12-06 17:01:52,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:52,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611973618] [2022-12-06 17:01:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:54,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:54,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:54,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611973618] [2022-12-06 17:01:54,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611973618] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:54,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:54,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-06 17:01:54,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639214969] [2022-12-06 17:01:54,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:01:54,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:01:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:01:54,218 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 318 [2022-12-06 17:01:54,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 628 transitions, 3175 flow. Second operand has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:54,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:54,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 318 [2022-12-06 17:01:54,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:01:58,004 INFO L130 PetriNetUnfolder]: 2321/15249 cut-off events. [2022-12-06 17:01:58,005 INFO L131 PetriNetUnfolder]: For 5101/16958 co-relation queries the response was YES. [2022-12-06 17:01:58,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25921 conditions, 15249 events. 2321/15249 cut-off events. For 5101/16958 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 194744 event pairs, 757 based on Foata normal form. 68/13183 useless extension candidates. Maximal degree in co-relation 9884. Up to 1328 conditions per place. [2022-12-06 17:01:58,202 INFO L137 encePairwiseOnDemand]: 272/318 looper letters, 403 selfloop transitions, 57 changer transitions 78/726 dead transitions. [2022-12-06 17:01:58,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 726 transitions, 4884 flow [2022-12-06 17:01:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-06 17:01:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-06 17:01:58,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 9076 transitions. [2022-12-06 17:01:58,209 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6486563750714694 [2022-12-06 17:01:58,210 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 146 predicate places. [2022-12-06 17:01:58,210 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 726 transitions, 4884 flow [2022-12-06 17:01:58,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:58,211 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:01:58,212 INFO L213 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] [2022-12-06 17:01:58,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:01:58,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:01:58,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:01:58,212 INFO L85 PathProgramCache]: Analyzing trace with hash -124755307, now seen corresponding path program 4 times [2022-12-06 17:01:58,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:01:58,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298505132] [2022-12-06 17:01:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:01:58,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:01:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:01:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:01:59,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:01:59,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298505132] [2022-12-06 17:01:59,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298505132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:01:59,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:01:59,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-12-06 17:01:59,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766197689] [2022-12-06 17:01:59,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:01:59,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-06 17:01:59,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:01:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-06 17:01:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2022-12-06 17:01:59,497 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 318 [2022-12-06 17:01:59,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 726 transitions, 4884 flow. Second operand has 33 states, 33 states have (on average 199.24242424242425) internal successors, (6575), 33 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:01:59,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:01:59,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 318 [2022-12-06 17:01:59,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:07,195 INFO L130 PetriNetUnfolder]: 2672/17605 cut-off events. [2022-12-06 17:02:07,196 INFO L131 PetriNetUnfolder]: For 10734/33679 co-relation queries the response was YES. [2022-12-06 17:02:07,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34272 conditions, 17605 events. 2672/17605 cut-off events. For 10734/33679 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 231396 event pairs, 693 based on Foata normal form. 178/15346 useless extension candidates. Maximal degree in co-relation 11142. Up to 1714 conditions per place. [2022-12-06 17:02:07,318 INFO L137 encePairwiseOnDemand]: 269/318 looper letters, 549 selfloop transitions, 78 changer transitions 114/926 dead transitions. [2022-12-06 17:02:07,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 926 transitions, 8080 flow [2022-12-06 17:02:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-06 17:02:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-12-06 17:02:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 12820 transitions. [2022-12-06 17:02:07,327 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6399121493461116 [2022-12-06 17:02:07,328 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 208 predicate places. [2022-12-06 17:02:07,328 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 926 transitions, 8080 flow [2022-12-06 17:02:07,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 199.24242424242425) internal successors, (6575), 33 states have internal predecessors, (6575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:07,330 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:07,330 INFO L213 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] [2022-12-06 17:02:07,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:02:07,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash 341727673, now seen corresponding path program 5 times [2022-12-06 17:02:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:07,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585424725] [2022-12-06 17:02:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:08,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:08,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:08,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585424725] [2022-12-06 17:02:08,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585424725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:08,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:08,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-06 17:02:08,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600771570] [2022-12-06 17:02:08,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:08,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-06 17:02:08,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:08,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-06 17:02:08,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-12-06 17:02:08,494 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 318 [2022-12-06 17:02:08,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 926 transitions, 8080 flow. Second operand has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:08,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:08,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 318 [2022-12-06 17:02:08,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:14,456 INFO L130 PetriNetUnfolder]: 3091/20134 cut-off events. [2022-12-06 17:02:14,456 INFO L131 PetriNetUnfolder]: For 18648/55919 co-relation queries the response was YES. [2022-12-06 17:02:14,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44226 conditions, 20134 events. 3091/20134 cut-off events. For 18648/55919 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 270942 event pairs, 654 based on Foata normal form. 229/17530 useless extension candidates. Maximal degree in co-relation 12384. Up to 1740 conditions per place. [2022-12-06 17:02:14,613 INFO L137 encePairwiseOnDemand]: 271/318 looper letters, 650 selfloop transitions, 97 changer transitions 160/1095 dead transitions. [2022-12-06 17:02:14,613 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1095 transitions, 11674 flow [2022-12-06 17:02:14,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-06 17:02:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-12-06 17:02:14,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 12607 transitions. [2022-12-06 17:02:14,623 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6499123620991855 [2022-12-06 17:02:14,625 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 268 predicate places. [2022-12-06 17:02:14,625 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 1095 transitions, 11674 flow [2022-12-06 17:02:14,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 202.53571428571428) internal successors, (5671), 28 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:14,627 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:14,627 INFO L213 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] [2022-12-06 17:02:14,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:02:14,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:14,628 INFO L85 PathProgramCache]: Analyzing trace with hash -348042767, now seen corresponding path program 6 times [2022-12-06 17:02:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:14,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308271508] [2022-12-06 17:02:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:14,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:15,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:15,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308271508] [2022-12-06 17:02:15,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308271508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:15,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:02:15,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-12-06 17:02:15,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354220637] [2022-12-06 17:02:15,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:15,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-06 17:02:15,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:15,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-06 17:02:15,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-12-06 17:02:15,696 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 318 [2022-12-06 17:02:15,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 1095 transitions, 11674 flow. Second operand has 29 states, 29 states have (on average 202.44827586206895) internal successors, (5871), 29 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:15,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:15,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 318 [2022-12-06 17:02:15,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:20,610 INFO L130 PetriNetUnfolder]: 3488/22839 cut-off events. [2022-12-06 17:02:20,610 INFO L131 PetriNetUnfolder]: For 30734/92737 co-relation queries the response was YES. [2022-12-06 17:02:20,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56067 conditions, 22839 events. 3488/22839 cut-off events. For 30734/92737 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 315430 event pairs, 650 based on Foata normal form. 132/19766 useless extension candidates. Maximal degree in co-relation 11414. Up to 2765 conditions per place. [2022-12-06 17:02:20,763 INFO L137 encePairwiseOnDemand]: 271/318 looper letters, 861 selfloop transitions, 56 changer transitions 216/1321 dead transitions. [2022-12-06 17:02:20,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 1321 transitions, 16766 flow [2022-12-06 17:02:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-06 17:02:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-06 17:02:20,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 9522 transitions. [2022-12-06 17:02:20,770 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6509433962264151 [2022-12-06 17:02:20,771 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 313 predicate places. [2022-12-06 17:02:20,771 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 1321 transitions, 16766 flow [2022-12-06 17:02:20,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 202.44827586206895) internal successors, (5871), 29 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:20,773 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:20,773 INFO L213 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] [2022-12-06 17:02:20,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-06 17:02:20,773 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:20,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:20,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1402364802, now seen corresponding path program 1 times [2022-12-06 17:02:20,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:20,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147019382] [2022-12-06 17:02:20,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:20,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:20,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:20,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147019382] [2022-12-06 17:02:20,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147019382] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:20,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580216469] [2022-12-06 17:02:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:20,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:20,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:20,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:20,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:02:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:21,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 17:02:21,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:02:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:21,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:02:21,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:21,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580216469] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:21,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:02:21,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-12-06 17:02:21,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299390989] [2022-12-06 17:02:21,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:21,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-06 17:02:21,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:21,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-06 17:02:21,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-12-06 17:02:21,678 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 318 [2022-12-06 17:02:21,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 1321 transitions, 16766 flow. Second operand has 13 states, 13 states have (on average 211.46153846153845) internal successors, (2749), 13 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:21,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:21,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 318 [2022-12-06 17:02:21,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:25,301 INFO L130 PetriNetUnfolder]: 3907/25608 cut-off events. [2022-12-06 17:02:25,302 INFO L131 PetriNetUnfolder]: For 42238/110920 co-relation queries the response was YES. [2022-12-06 17:02:25,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67372 conditions, 25608 events. 3907/25608 cut-off events. For 42238/110920 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 361473 event pairs, 929 based on Foata normal form. 32/22061 useless extension candidates. Maximal degree in co-relation 14655. Up to 3940 conditions per place. [2022-12-06 17:02:25,614 INFO L137 encePairwiseOnDemand]: 288/318 looper letters, 855 selfloop transitions, 41 changer transitions 227/1384 dead transitions. [2022-12-06 17:02:25,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1384 transitions, 19927 flow [2022-12-06 17:02:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-06 17:02:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-06 17:02:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5167 transitions. [2022-12-06 17:02:25,618 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.677017819706499 [2022-12-06 17:02:25,618 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 336 predicate places. [2022-12-06 17:02:25,618 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 1384 transitions, 19927 flow [2022-12-06 17:02:25,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.46153846153845) internal successors, (2749), 13 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:25,619 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:25,619 INFO L213 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] [2022-12-06 17:02:25,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 17:02:25,835 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 [2022-12-06 17:02:25,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:25,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash 446984591, now seen corresponding path program 1 times [2022-12-06 17:02:25,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:25,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322278170] [2022-12-06 17:02:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:26,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:26,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322278170] [2022-12-06 17:02:26,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322278170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:26,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380056248] [2022-12-06 17:02:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:26,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:26,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:26,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:26,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:02:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:26,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 17:02:26,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:02:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:26,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:02:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:26,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380056248] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:26,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:02:26,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-12-06 17:02:26,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445399713] [2022-12-06 17:02:26,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:26,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-06 17:02:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-06 17:02:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-12-06 17:02:26,798 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 318 [2022-12-06 17:02:26,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 1384 transitions, 19927 flow. Second operand has 13 states, 13 states have (on average 211.46153846153845) internal successors, (2749), 13 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:26,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:26,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 318 [2022-12-06 17:02:26,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:30,752 INFO L130 PetriNetUnfolder]: 3903/25400 cut-off events. [2022-12-06 17:02:30,755 INFO L131 PetriNetUnfolder]: For 52329/133070 co-relation queries the response was YES. [2022-12-06 17:02:30,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71314 conditions, 25400 events. 3903/25400 cut-off events. For 52329/133070 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 358434 event pairs, 932 based on Foata normal form. 42/21905 useless extension candidates. Maximal degree in co-relation 15337. Up to 3848 conditions per place. [2022-12-06 17:02:30,956 INFO L137 encePairwiseOnDemand]: 285/318 looper letters, 707 selfloop transitions, 65 changer transitions 239/1272 dead transitions. [2022-12-06 17:02:30,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 1272 transitions, 20157 flow [2022-12-06 17:02:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 17:02:30,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 17:02:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5785 transitions. [2022-12-06 17:02:30,974 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6737712555322618 [2022-12-06 17:02:30,974 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 353 predicate places. [2022-12-06 17:02:30,974 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 1272 transitions, 20157 flow [2022-12-06 17:02:30,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 211.46153846153845) internal successors, (2749), 13 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:30,975 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:30,975 INFO L213 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] [2022-12-06 17:02:30,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 17:02:31,176 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,SelfDestructingSolverStorable7 [2022-12-06 17:02:31,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:31,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1693098042, now seen corresponding path program 1 times [2022-12-06 17:02:31,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:31,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251702588] [2022-12-06 17:02:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:31,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:31,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:31,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251702588] [2022-12-06 17:02:31,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251702588] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:31,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693795478] [2022-12-06 17:02:31,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:31,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:31,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:31,663 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:31,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 17:02:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:31,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-06 17:02:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:02:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:32,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:02:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:33,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693795478] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:33,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:02:33,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-12-06 17:02:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427392066] [2022-12-06 17:02:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:33,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 17:02:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:33,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 17:02:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-12-06 17:02:33,019 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 318 [2022-12-06 17:02:33,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 1272 transitions, 20157 flow. Second operand has 18 states, 18 states have (on average 206.11111111111111) internal successors, (3710), 18 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:33,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:33,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 318 [2022-12-06 17:02:33,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:37,412 INFO L130 PetriNetUnfolder]: 3996/26088 cut-off events. [2022-12-06 17:02:37,412 INFO L131 PetriNetUnfolder]: For 64086/176539 co-relation queries the response was YES. [2022-12-06 17:02:37,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79027 conditions, 26088 events. 3996/26088 cut-off events. For 64086/176539 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 369184 event pairs, 767 based on Foata normal form. 22/22465 useless extension candidates. Maximal degree in co-relation 16851. Up to 3987 conditions per place. [2022-12-06 17:02:37,627 INFO L137 encePairwiseOnDemand]: 280/318 looper letters, 779 selfloop transitions, 54 changer transitions 255/1313 dead transitions. [2022-12-06 17:02:37,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 1313 transitions, 23077 flow [2022-12-06 17:02:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-06 17:02:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-06 17:02:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 8566 transitions. [2022-12-06 17:02:37,631 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6570026077619266 [2022-12-06 17:02:37,632 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 393 predicate places. [2022-12-06 17:02:37,632 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 1313 transitions, 23077 flow [2022-12-06 17:02:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 206.11111111111111) internal successors, (3710), 18 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:37,633 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:37,633 INFO L213 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] [2022-12-06 17:02:37,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 17:02:37,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:37,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:37,839 INFO L85 PathProgramCache]: Analyzing trace with hash 453818922, now seen corresponding path program 2 times [2022-12-06 17:02:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:37,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799711478] [2022-12-06 17:02:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:38,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:38,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799711478] [2022-12-06 17:02:38,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799711478] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:38,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463790802] [2022-12-06 17:02:38,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:02:38,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:38,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:38,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 17:02:38,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-06 17:02:38,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:02:38,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 17:02:38,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:02:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:02:38,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 17:02:38,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463790802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:38,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 17:02:38,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2022-12-06 17:02:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688773781] [2022-12-06 17:02:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:38,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 17:02:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 17:02:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2022-12-06 17:02:38,584 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 318 [2022-12-06 17:02:38,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 1313 transitions, 23077 flow. Second operand has 10 states, 10 states have (on average 232.6) internal successors, (2326), 10 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:38,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:38,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 318 [2022-12-06 17:02:38,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:43,549 INFO L130 PetriNetUnfolder]: 4764/31316 cut-off events. [2022-12-06 17:02:43,550 INFO L131 PetriNetUnfolder]: For 105151/272354 co-relation queries the response was YES. [2022-12-06 17:02:43,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102310 conditions, 31316 events. 4764/31316 cut-off events. For 105151/272354 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 457221 event pairs, 452 based on Foata normal form. 285/27099 useless extension candidates. Maximal degree in co-relation 17765. Up to 4384 conditions per place. [2022-12-06 17:02:43,847 INFO L137 encePairwiseOnDemand]: 297/318 looper letters, 845 selfloop transitions, 104 changer transitions 309/1531 dead transitions. [2022-12-06 17:02:43,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 1531 transitions, 29997 flow [2022-12-06 17:02:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-06 17:02:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-06 17:02:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3544 transitions. [2022-12-06 17:02:43,849 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7429769392033543 [2022-12-06 17:02:43,850 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 407 predicate places. [2022-12-06 17:02:43,850 INFO L495 AbstractCegarLoop]: Abstraction has has 693 places, 1531 transitions, 29997 flow [2022-12-06 17:02:43,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.6) internal successors, (2326), 10 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:43,850 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:43,850 INFO L213 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] [2022-12-06 17:02:43,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 17:02:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:44,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 590809112, now seen corresponding path program 3 times [2022-12-06 17:02:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244820820] [2022-12-06 17:02:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:44,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:44,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244820820] [2022-12-06 17:02:44,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244820820] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:44,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149893313] [2022-12-06 17:02:44,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:02:44,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:44,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:44,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:44,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 17:02:44,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-06 17:02:44,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:02:44,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 17:02:44,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:02:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:02:44,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 17:02:44,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149893313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:02:44,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 17:02:44,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2022-12-06 17:02:44,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454296481] [2022-12-06 17:02:44,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:44,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 17:02:44,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:44,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 17:02:44,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2022-12-06 17:02:44,792 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 318 [2022-12-06 17:02:44,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 1531 transitions, 29997 flow. Second operand has 10 states, 10 states have (on average 232.6) internal successors, (2326), 10 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:44,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:44,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 318 [2022-12-06 17:02:44,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:50,462 INFO L130 PetriNetUnfolder]: 5041/33085 cut-off events. [2022-12-06 17:02:50,462 INFO L131 PetriNetUnfolder]: For 128492/258820 co-relation queries the response was YES. [2022-12-06 17:02:50,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116667 conditions, 33085 events. 5041/33085 cut-off events. For 128492/258820 co-relation queries the response was YES. Maximal size of possible extension queue 931. Compared 487139 event pairs, 327 based on Foata normal form. 386/28717 useless extension candidates. Maximal degree in co-relation 19383. Up to 4533 conditions per place. [2022-12-06 17:02:50,776 INFO L137 encePairwiseOnDemand]: 297/318 looper letters, 1025 selfloop transitions, 117 changer transitions 377/1792 dead transitions. [2022-12-06 17:02:50,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 1792 transitions, 38860 flow [2022-12-06 17:02:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-06 17:02:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-06 17:02:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3543 transitions. [2022-12-06 17:02:50,779 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7427672955974842 [2022-12-06 17:02:50,779 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 421 predicate places. [2022-12-06 17:02:50,779 INFO L495 AbstractCegarLoop]: Abstraction has has 707 places, 1792 transitions, 38860 flow [2022-12-06 17:02:50,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.6) internal successors, (2326), 10 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:50,780 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:50,780 INFO L213 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] [2022-12-06 17:02:50,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 17:02:50,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-06 17:02:50,985 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:50,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:50,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2064306700, now seen corresponding path program 4 times [2022-12-06 17:02:50,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:50,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501011763] [2022-12-06 17:02:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:50,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:51,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501011763] [2022-12-06 17:02:51,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501011763] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:51,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712200924] [2022-12-06 17:02:51,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 17:02:51,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:51,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:51,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:51,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 17:02:51,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 17:02:51,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:02:51,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-06 17:02:51,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:02:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:52,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:02:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:52,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712200924] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:52,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:02:52,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-12-06 17:02:52,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023269906] [2022-12-06 17:02:52,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:02:52,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 17:02:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:02:52,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 17:02:52,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-12-06 17:02:52,747 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 318 [2022-12-06 17:02:52,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 1792 transitions, 38860 flow. Second operand has 18 states, 18 states have (on average 206.11111111111111) internal successors, (3710), 18 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:52,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:02:52,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 318 [2022-12-06 17:02:52,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:02:58,894 INFO L130 PetriNetUnfolder]: 5014/32944 cut-off events. [2022-12-06 17:02:58,894 INFO L131 PetriNetUnfolder]: For 146549/282602 co-relation queries the response was YES. [2022-12-06 17:02:59,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123782 conditions, 32944 events. 5014/32944 cut-off events. For 146549/282602 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 485057 event pairs, 351 based on Foata normal form. 93/28318 useless extension candidates. Maximal degree in co-relation 20149. Up to 4531 conditions per place. [2022-12-06 17:02:59,201 INFO L137 encePairwiseOnDemand]: 280/318 looper letters, 1083 selfloop transitions, 70 changer transitions 393/1790 dead transitions. [2022-12-06 17:02:59,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 747 places, 1790 transitions, 41904 flow [2022-12-06 17:02:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-06 17:02:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-06 17:02:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 8567 transitions. [2022-12-06 17:02:59,206 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.657079306642123 [2022-12-06 17:02:59,206 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 461 predicate places. [2022-12-06 17:02:59,206 INFO L495 AbstractCegarLoop]: Abstraction has has 747 places, 1790 transitions, 41904 flow [2022-12-06 17:02:59,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 206.11111111111111) internal successors, (3710), 18 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:02:59,207 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:02:59,207 INFO L213 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] [2022-12-06 17:02:59,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 17:02:59,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:59,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:02:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:02:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash -534264612, now seen corresponding path program 1 times [2022-12-06 17:02:59,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:02:59,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519356383] [2022-12-06 17:02:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:02:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:02:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:02:59,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519356383] [2022-12-06 17:02:59,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519356383] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:02:59,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144792009] [2022-12-06 17:02:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:02:59,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:02:59,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:02:59,588 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:02:59,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 17:02:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:02:59,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-06 17:02:59,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:03:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:03:00,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:03:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:03:00,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144792009] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 17:03:00,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 17:03:00,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-12-06 17:03:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711415473] [2022-12-06 17:03:00,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:00,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-06 17:03:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-06 17:03:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-12-06 17:03:00,366 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 318 [2022-12-06 17:03:00,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 1790 transitions, 41904 flow. Second operand has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:00,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:00,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 318 [2022-12-06 17:03:00,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:10,461 INFO L130 PetriNetUnfolder]: 10233/57454 cut-off events. [2022-12-06 17:03:10,462 INFO L131 PetriNetUnfolder]: For 309080/521317 co-relation queries the response was YES. [2022-12-06 17:03:10,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219948 conditions, 57454 events. 10233/57454 cut-off events. For 309080/521317 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 918365 event pairs, 1816 based on Foata normal form. 48/49476 useless extension candidates. Maximal degree in co-relation 37651. Up to 7398 conditions per place. [2022-12-06 17:03:11,027 INFO L137 encePairwiseOnDemand]: 300/318 looper letters, 1022 selfloop transitions, 87 changer transitions 392/2142 dead transitions. [2022-12-06 17:03:11,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 2142 transitions, 53234 flow [2022-12-06 17:03:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-06 17:03:11,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-06 17:03:11,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4646 transitions. [2022-12-06 17:03:11,029 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7689506785832506 [2022-12-06 17:03:11,030 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 479 predicate places. [2022-12-06 17:03:11,030 INFO L495 AbstractCegarLoop]: Abstraction has has 765 places, 2142 transitions, 53234 flow [2022-12-06 17:03:11,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 239.45454545454547) internal successors, (2634), 11 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:11,031 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:11,031 INFO L213 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] [2022-12-06 17:03:11,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 17:03:11,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:03:11,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:03:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1380196821, now seen corresponding path program 1 times [2022-12-06 17:03:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:11,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113352815] [2022-12-06 17:03:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:11,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:03:11,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:11,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113352815] [2022-12-06 17:03:11,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113352815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:03:11,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331306892] [2022-12-06 17:03:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:03:11,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:03:11,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:03:11,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 17:03:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:11,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-06 17:03:11,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:03:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:03:12,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:03:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:03:13,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331306892] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:03:13,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:03:13,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 37 [2022-12-06 17:03:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178143589] [2022-12-06 17:03:13,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:03:13,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-06 17:03:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:13,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-06 17:03:13,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2022-12-06 17:03:13,056 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 318 [2022-12-06 17:03:13,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 2142 transitions, 53234 flow. Second operand has 37 states, 37 states have (on average 206.3783783783784) internal successors, (7636), 37 states have internal predecessors, (7636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:13,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:13,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 318 [2022-12-06 17:03:13,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:28,054 INFO L130 PetriNetUnfolder]: 13320/72553 cut-off events. [2022-12-06 17:03:28,054 INFO L131 PetriNetUnfolder]: For 488332/926848 co-relation queries the response was YES. [2022-12-06 17:03:28,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300336 conditions, 72553 events. 13320/72553 cut-off events. For 488332/926848 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 1184061 event pairs, 1974 based on Foata normal form. 96/62323 useless extension candidates. Maximal degree in co-relation 40736. Up to 8664 conditions per place. [2022-12-06 17:03:29,066 INFO L137 encePairwiseOnDemand]: 283/318 looper letters, 1841 selfloop transitions, 83 changer transitions 484/2666 dead transitions. [2022-12-06 17:03:29,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 2666 transitions, 72341 flow [2022-12-06 17:03:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-06 17:03:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-06 17:03:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 10425 transitions. [2022-12-06 17:03:29,072 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6556603773584906 [2022-12-06 17:03:29,072 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 528 predicate places. [2022-12-06 17:03:29,072 INFO L495 AbstractCegarLoop]: Abstraction has has 814 places, 2666 transitions, 72341 flow [2022-12-06 17:03:29,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 206.3783783783784) internal successors, (7636), 37 states have internal predecessors, (7636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:29,074 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:29,074 INFO L213 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] [2022-12-06 17:03:29,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-06 17:03:29,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-06 17:03:29,308 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:03:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash 440953609, now seen corresponding path program 2 times [2022-12-06 17:03:29,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:29,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394688981] [2022-12-06 17:03:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:29,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 17:03:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394688981] [2022-12-06 17:03:29,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394688981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:03:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728333300] [2022-12-06 17:03:29,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:03:29,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:03:29,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:03:29,809 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 17:03:29,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 17:03:29,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-06 17:03:29,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:03:29,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-06 17:03:29,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:03:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 17:03:30,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 17:03:30,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728333300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:03:30,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 17:03:30,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 26 [2022-12-06 17:03:30,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546192041] [2022-12-06 17:03:30,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:30,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-06 17:03:30,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-06 17:03:30,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-12-06 17:03:30,107 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 318 [2022-12-06 17:03:30,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 814 places, 2666 transitions, 72341 flow. Second operand has 10 states, 10 states have (on average 232.7) internal successors, (2327), 10 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:30,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:30,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 318 [2022-12-06 17:03:30,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:03:47,796 INFO L130 PetriNetUnfolder]: 14292/77426 cut-off events. [2022-12-06 17:03:47,797 INFO L131 PetriNetUnfolder]: For 616543/1158963 co-relation queries the response was YES. [2022-12-06 17:03:48,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339977 conditions, 77426 events. 14292/77426 cut-off events. For 616543/1158963 co-relation queries the response was YES. Maximal size of possible extension queue 2251. Compared 1272492 event pairs, 2337 based on Foata normal form. 825/67156 useless extension candidates. Maximal degree in co-relation 37304. Up to 8955 conditions per place. [2022-12-06 17:03:48,737 INFO L137 encePairwiseOnDemand]: 297/318 looper letters, 1778 selfloop transitions, 233 changer transitions 536/2847 dead transitions. [2022-12-06 17:03:48,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 2847 transitions, 82689 flow [2022-12-06 17:03:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-06 17:03:48,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-06 17:03:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3542 transitions. [2022-12-06 17:03:48,754 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7425576519916143 [2022-12-06 17:03:48,754 INFO L294 CegarLoopForPetriNet]: 286 programPoint places, 542 predicate places. [2022-12-06 17:03:48,754 INFO L495 AbstractCegarLoop]: Abstraction has has 828 places, 2847 transitions, 82689 flow [2022-12-06 17:03:48,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 232.7) internal successors, (2327), 10 states have internal predecessors, (2327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:48,755 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:03:48,755 INFO L213 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] [2022-12-06 17:03:48,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 17:03:48,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-06 17:03:48,956 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 17:03:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:03:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1563232915, now seen corresponding path program 1 times [2022-12-06 17:03:48,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:03:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549378808] [2022-12-06 17:03:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:03:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:03:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:03:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:03:49,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:03:49,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549378808] [2022-12-06 17:03:49,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549378808] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:03:49,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:03:49,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:03:49,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012337670] [2022-12-06 17:03:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:03:49,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:03:49,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:03:49,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:03:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:03:49,051 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 318 [2022-12-06 17:03:49,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 2847 transitions, 82689 flow. Second operand has 7 states, 7 states have (on average 245.85714285714286) internal successors, (1721), 7 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:03:49,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:03:49,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 318 [2022-12-06 17:03:49,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand