/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:15:43,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:15:43,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:15:43,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:15:43,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:15:43,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:15:43,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:15:43,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:15:43,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:15:43,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:15:43,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:15:43,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:15:43,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:15:43,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:15:43,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:15:43,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:15:43,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:15:43,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:15:43,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:15:43,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:15:43,573 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:15:43,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:15:43,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:15:43,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:15:43,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:15:43,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:15:43,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:15:43,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:15:43,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:15:43,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:15:43,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:15:43,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:15:43,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:15:43,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:15:43,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:15:43,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:15:43,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:15:43,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:15:43,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:15:43,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:15:43,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:15:43,587 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-VariableLbe.epf [2023-01-28 09:15:43,614 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:15:43,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:15:43,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:15:43,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:15:43,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:15:43,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:15:43,616 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:15:43,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:15:43,616 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:15:43,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:15:43,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:15:43,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:15:43,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:15:43,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:15:43,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:15:43,617 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:15:43,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:15:43,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:15:43,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:15:43,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:15:43,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:15:43,619 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:15:43,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:15:43,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:15:43,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:15:43,833 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:15:43,834 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:15:43,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-01-28 09:15:44,799 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:15:44,920 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:15:44,920 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-01-28 09:15:44,925 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55426389/3eddafc443634c81a233e6013a903e0d/FLAG116181ed4 [2023-01-28 09:15:44,936 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55426389/3eddafc443634c81a233e6013a903e0d [2023-01-28 09:15:44,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:15:44,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:15:44,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:15:44,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:15:44,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:15:44,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:15:44" (1/1) ... [2023-01-28 09:15:44,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c636864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:44, skipping insertion in model container [2023-01-28 09:15:44,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:15:44" (1/1) ... [2023-01-28 09:15:44,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:15:44,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:15:45,131 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2023-01-28 09:15:45,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:15:45,149 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:15:45,184 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2023-01-28 09:15:45,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:15:45,196 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:15:45,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45 WrapperNode [2023-01-28 09:15:45,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:15:45,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:15:45,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:15:45,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:15:45,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,238 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 185 [2023-01-28 09:15:45,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:15:45,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:15:45,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:15:45,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:15:45,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:15:45,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:15:45,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:15:45,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:15:45,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (1/1) ... [2023-01-28 09:15:45,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:15:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:15:45,289 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) [2023-01-28 09:15:45,296 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 [2023-01-28 09:15:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:15:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:15:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:15:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:15:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:15:45,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:15:45,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:15:45,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:15:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 09:15:45,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 09:15:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:15:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:15:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:15:45,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:15:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:15:45,315 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:15:45,380 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:15:45,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:15:45,654 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:15:45,662 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:15:45,662 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 09:15:45,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:15:45 BoogieIcfgContainer [2023-01-28 09:15:45,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:15:45,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:15:45,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:15:45,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:15:45,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:15:44" (1/3) ... [2023-01-28 09:15:45,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21610ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:15:45, skipping insertion in model container [2023-01-28 09:15:45,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:15:45" (2/3) ... [2023-01-28 09:15:45,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21610ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:15:45, skipping insertion in model container [2023-01-28 09:15:45,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:15:45" (3/3) ... [2023-01-28 09:15:45,668 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-01-28 09:15:45,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:15:45,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:15:45,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:15:45,796 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 09:15:45,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 297 transitions, 618 flow [2023-01-28 09:15:45,954 INFO L130 PetriNetUnfolder]: 29/294 cut-off events. [2023-01-28 09:15:45,955 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:15:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 294 events. 29/294 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 232. Up to 3 conditions per place. [2023-01-28 09:15:45,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 297 transitions, 618 flow [2023-01-28 09:15:45,963 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 284 transitions, 586 flow [2023-01-28 09:15:45,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:15:45,970 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 284 transitions, 586 flow [2023-01-28 09:15:45,972 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 284 transitions, 586 flow [2023-01-28 09:15:45,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 284 transitions, 586 flow [2023-01-28 09:15:46,011 INFO L130 PetriNetUnfolder]: 29/284 cut-off events. [2023-01-28 09:15:46,011 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:15:46,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 284 events. 29/284 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 366 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 232. Up to 3 conditions per place. [2023-01-28 09:15:46,016 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-01-28 09:15:52,690 INFO L134 LiptonReduction]: Checked pairs total: 9778 [2023-01-28 09:15:52,691 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-01-28 09:15:52,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:15:52,707 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;@602d0fa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:15:52,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 09:15:52,711 INFO L130 PetriNetUnfolder]: 11/38 cut-off events. [2023-01-28 09:15:52,711 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 09:15:52,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:52,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:52,712 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)] === [2023-01-28 09:15:52,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:52,716 INFO L85 PathProgramCache]: Analyzing trace with hash -767736383, now seen corresponding path program 1 times [2023-01-28 09:15:52,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:52,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347061551] [2023-01-28 09:15:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:52,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:53,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:53,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347061551] [2023-01-28 09:15:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347061551] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:53,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:53,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:15:53,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987657840] [2023-01-28 09:15:53,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:15:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:53,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:15:53,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:15:53,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 594 [2023-01-28 09:15:53,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:53,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:53,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 594 [2023-01-28 09:15:53,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:53,332 INFO L130 PetriNetUnfolder]: 1126/1525 cut-off events. [2023-01-28 09:15:53,333 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-01-28 09:15:53,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3177 conditions, 1525 events. 1126/1525 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5006 event pairs, 489 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 2520. Up to 1127 conditions per place. [2023-01-28 09:15:53,340 INFO L137 encePairwiseOnDemand]: 591/594 looper letters, 35 selfloop transitions, 0 changer transitions 26/61 dead transitions. [2023-01-28 09:15:53,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 275 flow [2023-01-28 09:15:53,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:15:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:15:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 874 transitions. [2023-01-28 09:15:53,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904601571268238 [2023-01-28 09:15:53,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 874 transitions. [2023-01-28 09:15:53,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 874 transitions. [2023-01-28 09:15:53,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:53,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 874 transitions. [2023-01-28 09:15:53,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:53,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:53,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 594.0) internal successors, (2376), 4 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:53,371 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 3 states and 874 transitions. [2023-01-28 09:15:53,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 275 flow [2023-01-28 09:15:53,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 61 transitions, 253 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 09:15:53,379 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 78 flow [2023-01-28 09:15:53,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-01-28 09:15:53,383 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-01-28 09:15:53,383 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 78 flow [2023-01-28 09:15:53,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:53,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:53,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:53,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:15:53,385 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)] === [2023-01-28 09:15:53,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash 232711153, now seen corresponding path program 1 times [2023-01-28 09:15:53,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:53,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623716538] [2023-01-28 09:15:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:53,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:54,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:54,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623716538] [2023-01-28 09:15:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623716538] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:54,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:54,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870313039] [2023-01-28 09:15:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:54,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:15:54,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:54,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:15:54,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:15:54,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 594 [2023-01-28 09:15:54,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:54,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 594 [2023-01-28 09:15:54,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:54,249 INFO L130 PetriNetUnfolder]: 742/1039 cut-off events. [2023-01-28 09:15:54,249 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 09:15:54,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1039 events. 742/1039 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3759 event pairs, 47 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 2112. Up to 750 conditions per place. [2023-01-28 09:15:54,253 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 65 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2023-01-28 09:15:54,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 77 transitions, 327 flow [2023-01-28 09:15:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:54,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1348 transitions. [2023-01-28 09:15:54,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45387205387205387 [2023-01-28 09:15:54,255 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1348 transitions. [2023-01-28 09:15:54,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1348 transitions. [2023-01-28 09:15:54,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:54,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1348 transitions. [2023-01-28 09:15:54,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,262 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,262 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 78 flow. Second operand 5 states and 1348 transitions. [2023-01-28 09:15:54,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 77 transitions, 327 flow [2023-01-28 09:15:54,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 77 transitions, 323 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 09:15:54,265 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 91 flow [2023-01-28 09:15:54,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-01-28 09:15:54,265 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-01-28 09:15:54,266 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 91 flow [2023-01-28 09:15:54,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:54,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:54,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:15:54,267 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)] === [2023-01-28 09:15:54,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1633443233, now seen corresponding path program 2 times [2023-01-28 09:15:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:54,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957380731] [2023-01-28 09:15:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:54,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:54,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957380731] [2023-01-28 09:15:54,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957380731] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:54,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:54,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490219764] [2023-01-28 09:15:54,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:54,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:15:54,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:15:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:15:54,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 594 [2023-01-28 09:15:54,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:54,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 594 [2023-01-28 09:15:54,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:54,946 INFO L130 PetriNetUnfolder]: 804/1161 cut-off events. [2023-01-28 09:15:54,947 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2023-01-28 09:15:54,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1161 events. 804/1161 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4107 event pairs, 393 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 2564. Up to 895 conditions per place. [2023-01-28 09:15:54,952 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 60 selfloop transitions, 3 changer transitions 10/73 dead transitions. [2023-01-28 09:15:54,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 333 flow [2023-01-28 09:15:54,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1343 transitions. [2023-01-28 09:15:54,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521885521885522 [2023-01-28 09:15:54,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1343 transitions. [2023-01-28 09:15:54,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1343 transitions. [2023-01-28 09:15:54,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:54,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1343 transitions. [2023-01-28 09:15:54,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 268.6) internal successors, (1343), 5 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,961 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,962 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 91 flow. Second operand 5 states and 1343 transitions. [2023-01-28 09:15:54,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 333 flow [2023-01-28 09:15:54,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 324 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 09:15:54,965 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 108 flow [2023-01-28 09:15:54,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-01-28 09:15:54,966 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-01-28 09:15:54,968 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 108 flow [2023-01-28 09:15:54,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:54,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:54,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:54,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:15:54,969 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)] === [2023-01-28 09:15:54,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash 335853887, now seen corresponding path program 3 times [2023-01-28 09:15:54,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:54,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495213749] [2023-01-28 09:15:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:54,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:55,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:55,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495213749] [2023-01-28 09:15:55,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495213749] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:55,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:55,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111962614] [2023-01-28 09:15:55,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:55,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:15:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:15:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:15:55,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 594 [2023-01-28 09:15:55,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:55,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:55,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 594 [2023-01-28 09:15:55,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:55,609 INFO L130 PetriNetUnfolder]: 884/1293 cut-off events. [2023-01-28 09:15:55,609 INFO L131 PetriNetUnfolder]: For 758/758 co-relation queries the response was YES. [2023-01-28 09:15:55,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 1293 events. 884/1293 cut-off events. For 758/758 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5286 event pairs, 77 based on Foata normal form. 1/1033 useless extension candidates. Maximal degree in co-relation 3033. Up to 904 conditions per place. [2023-01-28 09:15:55,614 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 67 selfloop transitions, 3 changer transitions 11/81 dead transitions. [2023-01-28 09:15:55,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 81 transitions, 385 flow [2023-01-28 09:15:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1350 transitions. [2023-01-28 09:15:55,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-01-28 09:15:55,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1350 transitions. [2023-01-28 09:15:55,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1350 transitions. [2023-01-28 09:15:55,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:55,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1350 transitions. [2023-01-28 09:15:55,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:55,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:55,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:55,624 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 108 flow. Second operand 5 states and 1350 transitions. [2023-01-28 09:15:55,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 81 transitions, 385 flow [2023-01-28 09:15:55,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 81 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 09:15:55,626 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 123 flow [2023-01-28 09:15:55,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-01-28 09:15:55,627 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-01-28 09:15:55,627 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 123 flow [2023-01-28 09:15:55,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:55,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:55,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:55,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:15:55,628 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)] === [2023-01-28 09:15:55,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash -279052683, now seen corresponding path program 4 times [2023-01-28 09:15:55,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:55,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303439340] [2023-01-28 09:15:55,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:56,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:56,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303439340] [2023-01-28 09:15:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303439340] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:56,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094163284] [2023-01-28 09:15:56,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:56,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:15:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:15:56,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:15:56,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 594 [2023-01-28 09:15:56,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:56,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:56,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 594 [2023-01-28 09:15:56,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:56,374 INFO L130 PetriNetUnfolder]: 983/1468 cut-off events. [2023-01-28 09:15:56,375 INFO L131 PetriNetUnfolder]: For 1519/1519 co-relation queries the response was YES. [2023-01-28 09:15:56,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 1468 events. 983/1468 cut-off events. For 1519/1519 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5805 event pairs, 494 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 3591. Up to 1056 conditions per place. [2023-01-28 09:15:56,381 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 63 selfloop transitions, 4 changer transitions 11/78 dead transitions. [2023-01-28 09:15:56,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 398 flow [2023-01-28 09:15:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1345 transitions. [2023-01-28 09:15:56,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45286195286195285 [2023-01-28 09:15:56,383 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1345 transitions. [2023-01-28 09:15:56,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1345 transitions. [2023-01-28 09:15:56,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:56,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1345 transitions. [2023-01-28 09:15:56,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:56,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:56,390 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:56,390 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 123 flow. Second operand 5 states and 1345 transitions. [2023-01-28 09:15:56,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 398 flow [2023-01-28 09:15:56,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 382 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-28 09:15:56,395 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 148 flow [2023-01-28 09:15:56,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-01-28 09:15:56,396 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2023-01-28 09:15:56,396 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 148 flow [2023-01-28 09:15:56,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:56,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:56,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:56,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:15:56,397 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)] === [2023-01-28 09:15:56,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash -516534259, now seen corresponding path program 5 times [2023-01-28 09:15:56,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:56,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610880894] [2023-01-28 09:15:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:56,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:56,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610880894] [2023-01-28 09:15:56,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610880894] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:56,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:56,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:56,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486998936] [2023-01-28 09:15:56,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:56,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:15:56,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:15:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:15:56,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 594 [2023-01-28 09:15:56,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:56,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:56,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 594 [2023-01-28 09:15:56,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:57,084 INFO L130 PetriNetUnfolder]: 977/1448 cut-off events. [2023-01-28 09:15:57,084 INFO L131 PetriNetUnfolder]: For 2082/2082 co-relation queries the response was YES. [2023-01-28 09:15:57,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 1448 events. 977/1448 cut-off events. For 2082/2082 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5716 event pairs, 563 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 3666. Up to 1179 conditions per place. [2023-01-28 09:15:57,091 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 65 selfloop transitions, 4 changer transitions 10/79 dead transitions. [2023-01-28 09:15:57,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 407 flow [2023-01-28 09:15:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1347 transitions. [2023-01-28 09:15:57,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4535353535353535 [2023-01-28 09:15:57,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1347 transitions. [2023-01-28 09:15:57,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1347 transitions. [2023-01-28 09:15:57,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:57,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1347 transitions. [2023-01-28 09:15:57,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,100 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 148 flow. Second operand 5 states and 1347 transitions. [2023-01-28 09:15:57,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 407 flow [2023-01-28 09:15:57,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 391 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-01-28 09:15:57,104 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 147 flow [2023-01-28 09:15:57,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-01-28 09:15:57,106 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-01-28 09:15:57,106 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 147 flow [2023-01-28 09:15:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:57,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:15:57,107 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)] === [2023-01-28 09:15:57,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1858424173, now seen corresponding path program 6 times [2023-01-28 09:15:57,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599336742] [2023-01-28 09:15:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:57,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599336742] [2023-01-28 09:15:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599336742] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:57,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:57,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675637291] [2023-01-28 09:15:57,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:57,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:15:57,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:57,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:15:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:15:57,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 594 [2023-01-28 09:15:57,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:57,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 594 [2023-01-28 09:15:57,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:57,796 INFO L130 PetriNetUnfolder]: 964/1423 cut-off events. [2023-01-28 09:15:57,796 INFO L131 PetriNetUnfolder]: For 1843/1843 co-relation queries the response was YES. [2023-01-28 09:15:57,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 1423 events. 964/1423 cut-off events. For 1843/1843 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5442 event pairs, 494 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 3579. Up to 1056 conditions per place. [2023-01-28 09:15:57,802 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 70 selfloop transitions, 3 changer transitions 10/83 dead transitions. [2023-01-28 09:15:57,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 83 transitions, 420 flow [2023-01-28 09:15:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1351 transitions. [2023-01-28 09:15:57,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548821548821549 [2023-01-28 09:15:57,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1351 transitions. [2023-01-28 09:15:57,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1351 transitions. [2023-01-28 09:15:57,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:57,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1351 transitions. [2023-01-28 09:15:57,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 270.2) internal successors, (1351), 5 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,811 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 147 flow. Second operand 5 states and 1351 transitions. [2023-01-28 09:15:57,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 83 transitions, 420 flow [2023-01-28 09:15:57,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 409 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:15:57,814 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 147 flow [2023-01-28 09:15:57,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-01-28 09:15:57,815 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-01-28 09:15:57,815 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 147 flow [2023-01-28 09:15:57,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:57,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:57,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:15:57,816 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)] === [2023-01-28 09:15:57,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:57,816 INFO L85 PathProgramCache]: Analyzing trace with hash 31607289, now seen corresponding path program 1 times [2023-01-28 09:15:57,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:57,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633053922] [2023-01-28 09:15:57,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:57,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633053922] [2023-01-28 09:15:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633053922] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:57,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:57,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:57,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553039030] [2023-01-28 09:15:57,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:57,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:57,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:57,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:57,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:57,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:57,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:57,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:57,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:58,062 INFO L130 PetriNetUnfolder]: 1250/1858 cut-off events. [2023-01-28 09:15:58,062 INFO L131 PetriNetUnfolder]: For 2993/2993 co-relation queries the response was YES. [2023-01-28 09:15:58,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4558 conditions, 1858 events. 1250/1858 cut-off events. For 2993/2993 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8228 event pairs, 82 based on Foata normal form. 42/1511 useless extension candidates. Maximal degree in co-relation 4546. Up to 1135 conditions per place. [2023-01-28 09:15:58,069 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-01-28 09:15:58,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 413 flow [2023-01-28 09:15:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:15:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:15:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1117 transitions. [2023-01-28 09:15:58,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701178451178451 [2023-01-28 09:15:58,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1117 transitions. [2023-01-28 09:15:58,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1117 transitions. [2023-01-28 09:15:58,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:58,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1117 transitions. [2023-01-28 09:15:58,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 279.25) internal successors, (1117), 4 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,076 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 147 flow. Second operand 4 states and 1117 transitions. [2023-01-28 09:15:58,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 413 flow [2023-01-28 09:15:58,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 404 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 09:15:58,079 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 199 flow [2023-01-28 09:15:58,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-01-28 09:15:58,079 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-01-28 09:15:58,079 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 199 flow [2023-01-28 09:15:58,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:58,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:58,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:15:58,080 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)] === [2023-01-28 09:15:58,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash 330536063, now seen corresponding path program 2 times [2023-01-28 09:15:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:58,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493714798] [2023-01-28 09:15:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:58,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:58,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493714798] [2023-01-28 09:15:58,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493714798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:58,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:58,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:58,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119504938] [2023-01-28 09:15:58,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:58,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:58,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:58,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:58,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:58,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:58,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:58,299 INFO L130 PetriNetUnfolder]: 1145/1709 cut-off events. [2023-01-28 09:15:58,299 INFO L131 PetriNetUnfolder]: For 2564/2564 co-relation queries the response was YES. [2023-01-28 09:15:58,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 1709 events. 1145/1709 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7373 event pairs, 61 based on Foata normal form. 42/1388 useless extension candidates. Maximal degree in co-relation 4435. Up to 1028 conditions per place. [2023-01-28 09:15:58,306 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 72 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2023-01-28 09:15:58,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 496 flow [2023-01-28 09:15:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:15:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:15:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1115 transitions. [2023-01-28 09:15:58,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692760942760943 [2023-01-28 09:15:58,308 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1115 transitions. [2023-01-28 09:15:58,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1115 transitions. [2023-01-28 09:15:58,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:58,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1115 transitions. [2023-01-28 09:15:58,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,313 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,313 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 199 flow. Second operand 4 states and 1115 transitions. [2023-01-28 09:15:58,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 496 flow [2023-01-28 09:15:58,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:15:58,316 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 284 flow [2023-01-28 09:15:58,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-01-28 09:15:58,317 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-01-28 09:15:58,317 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 284 flow [2023-01-28 09:15:58,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:58,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:58,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:15:58,318 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)] === [2023-01-28 09:15:58,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1419436303, now seen corresponding path program 1 times [2023-01-28 09:15:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:58,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105606330] [2023-01-28 09:15:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:58,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:58,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:58,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105606330] [2023-01-28 09:15:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105606330] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:58,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:58,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:58,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962510830] [2023-01-28 09:15:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:58,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:58,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:58,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:58,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:58,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:58,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:58,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:58,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:58,580 INFO L130 PetriNetUnfolder]: 1135/1699 cut-off events. [2023-01-28 09:15:58,580 INFO L131 PetriNetUnfolder]: For 3195/3195 co-relation queries the response was YES. [2023-01-28 09:15:58,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 1699 events. 1135/1699 cut-off events. For 3195/3195 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7225 event pairs, 319 based on Foata normal form. 10/1346 useless extension candidates. Maximal degree in co-relation 4753. Up to 1145 conditions per place. [2023-01-28 09:15:58,587 INFO L137 encePairwiseOnDemand]: 589/594 looper letters, 68 selfloop transitions, 12 changer transitions 2/82 dead transitions. [2023-01-28 09:15:58,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 82 transitions, 556 flow [2023-01-28 09:15:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1378 transitions. [2023-01-28 09:15:58,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463973063973064 [2023-01-28 09:15:58,589 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1378 transitions. [2023-01-28 09:15:58,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1378 transitions. [2023-01-28 09:15:58,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:58,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1378 transitions. [2023-01-28 09:15:58,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,594 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,594 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 284 flow. Second operand 5 states and 1378 transitions. [2023-01-28 09:15:58,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 82 transitions, 556 flow [2023-01-28 09:15:58,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 82 transitions, 554 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 09:15:58,599 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 360 flow [2023-01-28 09:15:58,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2023-01-28 09:15:58,599 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2023-01-28 09:15:58,599 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 360 flow [2023-01-28 09:15:58,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:58,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:58,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:15:58,600 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)] === [2023-01-28 09:15:58,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:58,600 INFO L85 PathProgramCache]: Analyzing trace with hash 55249505, now seen corresponding path program 2 times [2023-01-28 09:15:58,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:58,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446093633] [2023-01-28 09:15:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:58,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:58,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:58,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446093633] [2023-01-28 09:15:58,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446093633] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:58,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:58,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:58,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703862702] [2023-01-28 09:15:58,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:58,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:58,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:58,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:58,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:58,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 360 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:58,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:58,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:58,832 INFO L130 PetriNetUnfolder]: 1199/1801 cut-off events. [2023-01-28 09:15:58,832 INFO L131 PetriNetUnfolder]: For 4165/4165 co-relation queries the response was YES. [2023-01-28 09:15:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 1801 events. 1199/1801 cut-off events. For 4165/4165 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7972 event pairs, 220 based on Foata normal form. 16/1428 useless extension candidates. Maximal degree in co-relation 5147. Up to 1459 conditions per place. [2023-01-28 09:15:58,841 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 64 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2023-01-28 09:15:58,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 566 flow [2023-01-28 09:15:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:15:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:15:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1109 transitions. [2023-01-28 09:15:58,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46675084175084175 [2023-01-28 09:15:58,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1109 transitions. [2023-01-28 09:15:58,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1109 transitions. [2023-01-28 09:15:58,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:58,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1109 transitions. [2023-01-28 09:15:58,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.25) internal successors, (1109), 4 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,848 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 360 flow. Second operand 4 states and 1109 transitions. [2023-01-28 09:15:58,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 566 flow [2023-01-28 09:15:58,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 541 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-28 09:15:58,855 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 383 flow [2023-01-28 09:15:58,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-01-28 09:15:58,855 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-01-28 09:15:58,855 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 383 flow [2023-01-28 09:15:58,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:58,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:58,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:15:58,856 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)] === [2023-01-28 09:15:58,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash -482211297, now seen corresponding path program 3 times [2023-01-28 09:15:58,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:58,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22121370] [2023-01-28 09:15:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:58,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:58,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:58,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22121370] [2023-01-28 09:15:58,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22121370] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:58,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:58,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774538746] [2023-01-28 09:15:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:58,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:58,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:58,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:58,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:58,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:58,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:58,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:58,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:58,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:59,106 INFO L130 PetriNetUnfolder]: 1128/1686 cut-off events. [2023-01-28 09:15:59,106 INFO L131 PetriNetUnfolder]: For 4559/4559 co-relation queries the response was YES. [2023-01-28 09:15:59,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4950 conditions, 1686 events. 1128/1686 cut-off events. For 4559/4559 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7189 event pairs, 283 based on Foata normal form. 8/1331 useless extension candidates. Maximal degree in co-relation 4931. Up to 1318 conditions per place. [2023-01-28 09:15:59,121 INFO L137 encePairwiseOnDemand]: 589/594 looper letters, 73 selfloop transitions, 11 changer transitions 1/85 dead transitions. [2023-01-28 09:15:59,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 652 flow [2023-01-28 09:15:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:59,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1378 transitions. [2023-01-28 09:15:59,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463973063973064 [2023-01-28 09:15:59,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1378 transitions. [2023-01-28 09:15:59,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1378 transitions. [2023-01-28 09:15:59,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:59,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1378 transitions. [2023-01-28 09:15:59,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,129 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 383 flow. Second operand 5 states and 1378 transitions. [2023-01-28 09:15:59,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 652 flow [2023-01-28 09:15:59,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 85 transitions, 642 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:15:59,138 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 403 flow [2023-01-28 09:15:59,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-01-28 09:15:59,139 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2023-01-28 09:15:59,139 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 403 flow [2023-01-28 09:15:59,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:59,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:59,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:15:59,140 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)] === [2023-01-28 09:15:59,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:59,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1330484071, now seen corresponding path program 4 times [2023-01-28 09:15:59,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:59,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844473503] [2023-01-28 09:15:59,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:59,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:59,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844473503] [2023-01-28 09:15:59,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844473503] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:59,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:59,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:59,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626021176] [2023-01-28 09:15:59,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:59,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:59,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:59,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:59,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:59,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:59,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:59,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:59,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:59,450 INFO L130 PetriNetUnfolder]: 1126/1690 cut-off events. [2023-01-28 09:15:59,451 INFO L131 PetriNetUnfolder]: For 5489/5489 co-relation queries the response was YES. [2023-01-28 09:15:59,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4995 conditions, 1690 events. 1126/1690 cut-off events. For 5489/5489 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7250 event pairs, 240 based on Foata normal form. 14/1337 useless extension candidates. Maximal degree in co-relation 4975. Up to 1444 conditions per place. [2023-01-28 09:15:59,458 INFO L137 encePairwiseOnDemand]: 589/594 looper letters, 68 selfloop transitions, 7 changer transitions 9/84 dead transitions. [2023-01-28 09:15:59,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 650 flow [2023-01-28 09:15:59,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:15:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:15:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1113 transitions. [2023-01-28 09:15:59,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684343434343434 [2023-01-28 09:15:59,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1113 transitions. [2023-01-28 09:15:59,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1113 transitions. [2023-01-28 09:15:59,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:59,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1113 transitions. [2023-01-28 09:15:59,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,465 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 403 flow. Second operand 4 states and 1113 transitions. [2023-01-28 09:15:59,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 650 flow [2023-01-28 09:15:59,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 616 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 09:15:59,471 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 364 flow [2023-01-28 09:15:59,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-01-28 09:15:59,472 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-01-28 09:15:59,472 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 364 flow [2023-01-28 09:15:59,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:59,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:59,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:15:59,472 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)] === [2023-01-28 09:15:59,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1564960603, now seen corresponding path program 3 times [2023-01-28 09:15:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:59,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792090105] [2023-01-28 09:15:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:59,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:59,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:59,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792090105] [2023-01-28 09:15:59,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792090105] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:59,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:59,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:59,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923006609] [2023-01-28 09:15:59,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:59,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:59,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:59,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:59,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:59,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:59,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:59,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:59,704 INFO L130 PetriNetUnfolder]: 973/1441 cut-off events. [2023-01-28 09:15:59,704 INFO L131 PetriNetUnfolder]: For 3305/3305 co-relation queries the response was YES. [2023-01-28 09:15:59,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4216 conditions, 1441 events. 973/1441 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5650 event pairs, 444 based on Foata normal form. 18/1142 useless extension candidates. Maximal degree in co-relation 4198. Up to 1130 conditions per place. [2023-01-28 09:15:59,709 INFO L137 encePairwiseOnDemand]: 589/594 looper letters, 85 selfloop transitions, 5 changer transitions 4/94 dead transitions. [2023-01-28 09:15:59,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 642 flow [2023-01-28 09:15:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:15:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:15:59,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1387 transitions. [2023-01-28 09:15:59,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.467003367003367 [2023-01-28 09:15:59,712 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1387 transitions. [2023-01-28 09:15:59,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1387 transitions. [2023-01-28 09:15:59,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:59,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1387 transitions. [2023-01-28 09:15:59,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 277.4) internal successors, (1387), 5 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 594.0) internal successors, (3564), 6 states have internal predecessors, (3564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,717 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 364 flow. Second operand 5 states and 1387 transitions. [2023-01-28 09:15:59,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 642 flow [2023-01-28 09:15:59,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 612 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-28 09:15:59,721 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 316 flow [2023-01-28 09:15:59,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-01-28 09:15:59,721 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2023-01-28 09:15:59,722 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 316 flow [2023-01-28 09:15:59,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:59,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:59,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:15:59,723 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)] === [2023-01-28 09:15:59,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash -831405779, now seen corresponding path program 4 times [2023-01-28 09:15:59,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212774202] [2023-01-28 09:15:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:59,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:59,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212774202] [2023-01-28 09:15:59,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212774202] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:59,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772658124] [2023-01-28 09:15:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:59,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:59,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:59,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:59,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:59,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:59,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:15:59,913 INFO L130 PetriNetUnfolder]: 913/1335 cut-off events. [2023-01-28 09:15:59,914 INFO L131 PetriNetUnfolder]: For 2218/2218 co-relation queries the response was YES. [2023-01-28 09:15:59,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3833 conditions, 1335 events. 913/1335 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5122 event pairs, 191 based on Foata normal form. 16/1054 useless extension candidates. Maximal degree in co-relation 3817. Up to 1209 conditions per place. [2023-01-28 09:15:59,918 INFO L137 encePairwiseOnDemand]: 590/594 looper letters, 56 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2023-01-28 09:15:59,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 464 flow [2023-01-28 09:15:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:15:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:15:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1101 transitions. [2023-01-28 09:15:59,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633838383838384 [2023-01-28 09:15:59,921 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1101 transitions. [2023-01-28 09:15:59,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1101 transitions. [2023-01-28 09:15:59,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:15:59,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1101 transitions. [2023-01-28 09:15:59,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,925 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 316 flow. Second operand 4 states and 1101 transitions. [2023-01-28 09:15:59,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 464 flow [2023-01-28 09:15:59,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 439 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-01-28 09:15:59,927 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 292 flow [2023-01-28 09:15:59,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-01-28 09:15:59,928 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2023-01-28 09:15:59,928 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 292 flow [2023-01-28 09:15:59,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:15:59,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:15:59,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 09:15:59,929 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)] === [2023-01-28 09:15:59,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:15:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash -262667675, now seen corresponding path program 5 times [2023-01-28 09:15:59,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:15:59,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476872079] [2023-01-28 09:15:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:15:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:15:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:15:59,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:15:59,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:15:59,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476872079] [2023-01-28 09:15:59,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476872079] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:15:59,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:15:59,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:15:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893608683] [2023-01-28 09:15:59,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:15:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:15:59,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:15:59,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:15:59,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:15:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:15:59,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 292 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:15:59,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:15:59,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:15:59,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:00,111 INFO L130 PetriNetUnfolder]: 883/1283 cut-off events. [2023-01-28 09:16:00,112 INFO L131 PetriNetUnfolder]: For 1307/1307 co-relation queries the response was YES. [2023-01-28 09:16:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 1283 events. 883/1283 cut-off events. For 1307/1307 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4715 event pairs, 497 based on Foata normal form. 4/1004 useless extension candidates. Maximal degree in co-relation 3679. Up to 1269 conditions per place. [2023-01-28 09:16:00,116 INFO L137 encePairwiseOnDemand]: 591/594 looper letters, 47 selfloop transitions, 0 changer transitions 8/55 dead transitions. [2023-01-28 09:16:00,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 55 transitions, 398 flow [2023-01-28 09:16:00,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:16:00,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:16:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1087 transitions. [2023-01-28 09:16:00,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574915824915825 [2023-01-28 09:16:00,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1087 transitions. [2023-01-28 09:16:00,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1087 transitions. [2023-01-28 09:16:00,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:00,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1087 transitions. [2023-01-28 09:16:00,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 271.75) internal successors, (1087), 4 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,123 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 292 flow. Second operand 4 states and 1087 transitions. [2023-01-28 09:16:00,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 55 transitions, 398 flow [2023-01-28 09:16:00,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 377 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 09:16:00,125 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 235 flow [2023-01-28 09:16:00,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-01-28 09:16:00,126 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2023-01-28 09:16:00,126 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 235 flow [2023-01-28 09:16:00,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:00,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:16:00,126 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:00,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1310580011, now seen corresponding path program 5 times [2023-01-28 09:16:00,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:00,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049706228] [2023-01-28 09:16:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:00,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:00,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:00,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049706228] [2023-01-28 09:16:00,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049706228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:00,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:16:00,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:16:00,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632511901] [2023-01-28 09:16:00,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:00,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:16:00,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:00,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:16:00,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:16:00,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 594 [2023-01-28 09:16:00,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:00,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 594 [2023-01-28 09:16:00,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:00,294 INFO L130 PetriNetUnfolder]: 803/1151 cut-off events. [2023-01-28 09:16:00,294 INFO L131 PetriNetUnfolder]: For 922/922 co-relation queries the response was YES. [2023-01-28 09:16:00,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3215 conditions, 1151 events. 803/1151 cut-off events. For 922/922 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3967 event pairs, 444 based on Foata normal form. 10/906 useless extension candidates. Maximal degree in co-relation 3204. Up to 1130 conditions per place. [2023-01-28 09:16:00,298 INFO L137 encePairwiseOnDemand]: 591/594 looper letters, 44 selfloop transitions, 0 changer transitions 10/54 dead transitions. [2023-01-28 09:16:00,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 344 flow [2023-01-28 09:16:00,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:16:00,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:16:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1088 transitions. [2023-01-28 09:16:00,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2023-01-28 09:16:00,301 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1088 transitions. [2023-01-28 09:16:00,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1088 transitions. [2023-01-28 09:16:00,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:00,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1088 transitions. [2023-01-28 09:16:00,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.0) internal successors, (1088), 4 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,305 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 594.0) internal successors, (2970), 5 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,305 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 235 flow. Second operand 4 states and 1088 transitions. [2023-01-28 09:16:00,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 344 flow [2023-01-28 09:16:00,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 341 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:16:00,306 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 199 flow [2023-01-28 09:16:00,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-01-28 09:16:00,307 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 22 predicate places. [2023-01-28 09:16:00,307 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 199 flow [2023-01-28 09:16:00,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 266.25) internal successors, (1065), 4 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:00,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:00,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:16:00,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:00,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:00,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1757760381, now seen corresponding path program 1 times [2023-01-28 09:16:00,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:00,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459056336] [2023-01-28 09:16:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:00,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:00,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:00,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459056336] [2023-01-28 09:16:00,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459056336] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:00,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:16:00,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:16:00,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390882627] [2023-01-28 09:16:00,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:00,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:16:00,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:16:00,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:16:00,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 594 [2023-01-28 09:16:00,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 199 flow. Second operand has 9 states, 9 states have (on average 209.44444444444446) internal successors, (1885), 9 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:00,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:00,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 594 [2023-01-28 09:16:00,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:01,400 INFO L130 PetriNetUnfolder]: 3096/4436 cut-off events. [2023-01-28 09:16:01,400 INFO L131 PetriNetUnfolder]: For 3284/3284 co-relation queries the response was YES. [2023-01-28 09:16:01,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12394 conditions, 4436 events. 3096/4436 cut-off events. For 3284/3284 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 20444 event pairs, 1032 based on Foata normal form. 1/3506 useless extension candidates. Maximal degree in co-relation 12384. Up to 693 conditions per place. [2023-01-28 09:16:01,416 INFO L137 encePairwiseOnDemand]: 581/594 looper letters, 219 selfloop transitions, 28 changer transitions 7/254 dead transitions. [2023-01-28 09:16:01,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 254 transitions, 1636 flow [2023-01-28 09:16:01,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:16:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:16:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2266 transitions. [2023-01-28 09:16:01,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2023-01-28 09:16:01,421 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2266 transitions. [2023-01-28 09:16:01,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2266 transitions. [2023-01-28 09:16:01,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:01,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2266 transitions. [2023-01-28 09:16:01,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 226.6) internal successors, (2266), 10 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:01,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 594.0) internal successors, (6534), 11 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:01,432 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 594.0) internal successors, (6534), 11 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:01,432 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 199 flow. Second operand 10 states and 2266 transitions. [2023-01-28 09:16:01,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 254 transitions, 1636 flow [2023-01-28 09:16:01,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 254 transitions, 1622 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 09:16:01,437 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 421 flow [2023-01-28 09:16:01,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=421, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2023-01-28 09:16:01,437 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2023-01-28 09:16:01,437 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 421 flow [2023-01-28 09:16:01,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 209.44444444444446) internal successors, (1885), 9 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:01,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:01,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:01,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 09:16:01,438 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:01,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:01,438 INFO L85 PathProgramCache]: Analyzing trace with hash -493399717, now seen corresponding path program 1 times [2023-01-28 09:16:01,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:01,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644077119] [2023-01-28 09:16:01,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:01,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:01,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:01,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644077119] [2023-01-28 09:16:01,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644077119] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:01,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769358597] [2023-01-28 09:16:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:01,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:01,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:01,618 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) [2023-01-28 09:16:01,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:16:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:01,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 09:16:01,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:02,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:16:02,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:16:02,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:16:04,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:04,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769358597] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:04,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:16:04,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-01-28 09:16:04,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670956978] [2023-01-28 09:16:04,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:04,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:16:04,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:04,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:16:04,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-01-28 09:16:04,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:16:04,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 421 flow. Second operand has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:04,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:04,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:16:04,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:07,473 INFO L130 PetriNetUnfolder]: 6090/8974 cut-off events. [2023-01-28 09:16:07,474 INFO L131 PetriNetUnfolder]: For 10029/10029 co-relation queries the response was YES. [2023-01-28 09:16:07,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28590 conditions, 8974 events. 6090/8974 cut-off events. For 10029/10029 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 50237 event pairs, 600 based on Foata normal form. 4/8079 useless extension candidates. Maximal degree in co-relation 28574. Up to 1372 conditions per place. [2023-01-28 09:16:07,601 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 380 selfloop transitions, 101 changer transitions 27/508 dead transitions. [2023-01-28 09:16:07,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 508 transitions, 3487 flow [2023-01-28 09:16:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 09:16:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 09:16:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4640 transitions. [2023-01-28 09:16:07,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35506580961126416 [2023-01-28 09:16:07,611 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4640 transitions. [2023-01-28 09:16:07,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4640 transitions. [2023-01-28 09:16:07,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:07,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4640 transitions. [2023-01-28 09:16:07,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 210.9090909090909) internal successors, (4640), 22 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:07,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 594.0) internal successors, (13662), 23 states have internal predecessors, (13662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:07,630 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 594.0) internal successors, (13662), 23 states have internal predecessors, (13662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:07,630 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 421 flow. Second operand 22 states and 4640 transitions. [2023-01-28 09:16:07,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 508 transitions, 3487 flow [2023-01-28 09:16:07,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 508 transitions, 3485 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 09:16:07,646 INFO L231 Difference]: Finished difference. Result has 105 places, 173 transitions, 1537 flow [2023-01-28 09:16:07,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1537, PETRI_PLACES=105, PETRI_TRANSITIONS=173} [2023-01-28 09:16:07,646 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2023-01-28 09:16:07,646 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 173 transitions, 1537 flow [2023-01-28 09:16:07,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:07,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:07,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:07,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 09:16:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:07,853 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:07,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:07,854 INFO L85 PathProgramCache]: Analyzing trace with hash 773516305, now seen corresponding path program 2 times [2023-01-28 09:16:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:07,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545214533] [2023-01-28 09:16:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545214533] [2023-01-28 09:16:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545214533] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:08,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328237112] [2023-01-28 09:16:08,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:16:08,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:08,021 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) [2023-01-28 09:16:08,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:16:08,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:16:08,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:16:08,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 09:16:08,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:08,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:08,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:16:08,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328237112] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:08,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:16:08,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:16:08,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893249087] [2023-01-28 09:16:08,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:16:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:16:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:16:08,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:16:08,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 173 transitions, 1537 flow. Second operand has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:08,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:08,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:16:08,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:09,873 INFO L130 PetriNetUnfolder]: 6398/9419 cut-off events. [2023-01-28 09:16:09,873 INFO L131 PetriNetUnfolder]: For 39822/39822 co-relation queries the response was YES. [2023-01-28 09:16:09,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39988 conditions, 9419 events. 6398/9419 cut-off events. For 39822/39822 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 52722 event pairs, 912 based on Foata normal form. 49/8974 useless extension candidates. Maximal degree in co-relation 39955. Up to 3793 conditions per place. [2023-01-28 09:16:09,921 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 238 selfloop transitions, 124 changer transitions 10/372 dead transitions. [2023-01-28 09:16:09,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 372 transitions, 3591 flow [2023-01-28 09:16:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:16:09,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:16:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3332 transitions. [2023-01-28 09:16:09,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35058922558922556 [2023-01-28 09:16:09,925 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3332 transitions. [2023-01-28 09:16:09,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3332 transitions. [2023-01-28 09:16:09,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:09,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3332 transitions. [2023-01-28 09:16:09,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 208.25) internal successors, (3332), 16 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:09,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:09,935 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:09,935 INFO L175 Difference]: Start difference. First operand has 105 places, 173 transitions, 1537 flow. Second operand 16 states and 3332 transitions. [2023-01-28 09:16:09,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 372 transitions, 3591 flow [2023-01-28 09:16:10,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 372 transitions, 3511 flow, removed 40 selfloop flow, removed 0 redundant places. [2023-01-28 09:16:10,069 INFO L231 Difference]: Finished difference. Result has 129 places, 220 transitions, 2423 flow [2023-01-28 09:16:10,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2423, PETRI_PLACES=129, PETRI_TRANSITIONS=220} [2023-01-28 09:16:10,070 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2023-01-28 09:16:10,070 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 220 transitions, 2423 flow [2023-01-28 09:16:10,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:10,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:10,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:10,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 09:16:10,275 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,SelfDestructingSolverStorable19 [2023-01-28 09:16:10,275 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:10,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1430753600, now seen corresponding path program 1 times [2023-01-28 09:16:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:10,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105577253] [2023-01-28 09:16:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:10,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105577253] [2023-01-28 09:16:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105577253] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360732345] [2023-01-28 09:16:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:10,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:10,420 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) [2023-01-28 09:16:10,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:16:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:10,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 09:16:10,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:10,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:16:10,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 81 [2023-01-28 09:16:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:11,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:16:11,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:16:11,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:16:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:13,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360732345] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:13,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:16:13,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-01-28 09:16:13,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824802841] [2023-01-28 09:16:13,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:13,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:16:13,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:13,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:16:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2023-01-28 09:16:13,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:16:13,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 220 transitions, 2423 flow. Second operand has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:13,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:13,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:16:13,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:16,092 INFO L130 PetriNetUnfolder]: 9862/14530 cut-off events. [2023-01-28 09:16:16,093 INFO L131 PetriNetUnfolder]: For 86655/86655 co-relation queries the response was YES. [2023-01-28 09:16:16,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67775 conditions, 14530 events. 9862/14530 cut-off events. For 86655/86655 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 87462 event pairs, 613 based on Foata normal form. 5/13765 useless extension candidates. Maximal degree in co-relation 67732. Up to 3294 conditions per place. [2023-01-28 09:16:16,190 INFO L137 encePairwiseOnDemand]: 578/594 looper letters, 297 selfloop transitions, 214 changer transitions 16/527 dead transitions. [2023-01-28 09:16:16,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 527 transitions, 5996 flow [2023-01-28 09:16:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:16:16,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:16:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3165 transitions. [2023-01-28 09:16:16,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3552188552188552 [2023-01-28 09:16:16,193 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3165 transitions. [2023-01-28 09:16:16,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3165 transitions. [2023-01-28 09:16:16,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:16,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3165 transitions. [2023-01-28 09:16:16,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 211.0) internal successors, (3165), 15 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:16,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 594.0) internal successors, (9504), 16 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:16,348 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 594.0) internal successors, (9504), 16 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:16,348 INFO L175 Difference]: Start difference. First operand has 129 places, 220 transitions, 2423 flow. Second operand 15 states and 3165 transitions. [2023-01-28 09:16:16,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 527 transitions, 5996 flow [2023-01-28 09:16:16,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 527 transitions, 5296 flow, removed 274 selfloop flow, removed 8 redundant places. [2023-01-28 09:16:16,858 INFO L231 Difference]: Finished difference. Result has 146 places, 316 transitions, 3915 flow [2023-01-28 09:16:16,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3915, PETRI_PLACES=146, PETRI_TRANSITIONS=316} [2023-01-28 09:16:16,858 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 108 predicate places. [2023-01-28 09:16:16,858 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 316 transitions, 3915 flow [2023-01-28 09:16:16,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:16,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:16,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:16,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 09:16:17,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:17,064 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:17,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1629821531, now seen corresponding path program 3 times [2023-01-28 09:16:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:17,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873881403] [2023-01-28 09:16:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:17,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:17,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873881403] [2023-01-28 09:16:17,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873881403] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548590640] [2023-01-28 09:16:17,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:16:17,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:17,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:17,225 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) [2023-01-28 09:16:17,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:16:17,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:16:17,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:16:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 09:16:17,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:17,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:16:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548590640] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:17,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:16:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:16:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958730104] [2023-01-28 09:16:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:17,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:16:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:16:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:16:17,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 594 [2023-01-28 09:16:17,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 316 transitions, 3915 flow. Second operand has 12 states, 12 states have (on average 200.91666666666666) internal successors, (2411), 12 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:17,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:17,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 594 [2023-01-28 09:16:17,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:20,180 INFO L130 PetriNetUnfolder]: 9888/14677 cut-off events. [2023-01-28 09:16:20,181 INFO L131 PetriNetUnfolder]: For 112504/112504 co-relation queries the response was YES. [2023-01-28 09:16:20,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71383 conditions, 14677 events. 9888/14677 cut-off events. For 112504/112504 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 89023 event pairs, 1511 based on Foata normal form. 52/13927 useless extension candidates. Maximal degree in co-relation 71333. Up to 6687 conditions per place. [2023-01-28 09:16:20,372 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 254 selfloop transitions, 203 changer transitions 15/472 dead transitions. [2023-01-28 09:16:20,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 472 transitions, 6115 flow [2023-01-28 09:16:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 09:16:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 09:16:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2963 transitions. [2023-01-28 09:16:20,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563011063011063 [2023-01-28 09:16:20,376 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2963 transitions. [2023-01-28 09:16:20,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2963 transitions. [2023-01-28 09:16:20,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:20,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2963 transitions. [2023-01-28 09:16:20,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 211.64285714285714) internal successors, (2963), 14 states have internal predecessors, (2963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:20,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 594.0) internal successors, (8910), 15 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:20,384 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 594.0) internal successors, (8910), 15 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:20,384 INFO L175 Difference]: Start difference. First operand has 146 places, 316 transitions, 3915 flow. Second operand 14 states and 2963 transitions. [2023-01-28 09:16:20,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 472 transitions, 6115 flow [2023-01-28 09:16:21,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 472 transitions, 5957 flow, removed 79 selfloop flow, removed 0 redundant places. [2023-01-28 09:16:21,267 INFO L231 Difference]: Finished difference. Result has 167 places, 350 transitions, 4907 flow [2023-01-28 09:16:21,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4907, PETRI_PLACES=167, PETRI_TRANSITIONS=350} [2023-01-28 09:16:21,268 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 129 predicate places. [2023-01-28 09:16:21,268 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 350 transitions, 4907 flow [2023-01-28 09:16:21,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 200.91666666666666) internal successors, (2411), 12 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:21,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:21,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:21,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 09:16:21,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:21,473 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:21,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1609186473, now seen corresponding path program 1 times [2023-01-28 09:16:21,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:21,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627921353] [2023-01-28 09:16:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:21,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:21,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:21,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627921353] [2023-01-28 09:16:21,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627921353] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:21,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90529648] [2023-01-28 09:16:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:21,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:21,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:21,873 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) [2023-01-28 09:16:21,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:16:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:21,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 09:16:21,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:22,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:16:22,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:16:22,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:16:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:23,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90529648] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:23,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:16:23,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-01-28 09:16:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466909971] [2023-01-28 09:16:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:23,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:16:23,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:16:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:16:23,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 594 [2023-01-28 09:16:23,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 350 transitions, 4907 flow. Second operand has 10 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:23,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:23,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 594 [2023-01-28 09:16:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:26,871 INFO L130 PetriNetUnfolder]: 13447/20065 cut-off events. [2023-01-28 09:16:26,871 INFO L131 PetriNetUnfolder]: For 177684/177684 co-relation queries the response was YES. [2023-01-28 09:16:26,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103138 conditions, 20065 events. 13447/20065 cut-off events. For 177684/177684 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 128669 event pairs, 3272 based on Foata normal form. 114/19117 useless extension candidates. Maximal degree in co-relation 103079. Up to 5325 conditions per place. [2023-01-28 09:16:27,003 INFO L137 encePairwiseOnDemand]: 580/594 looper letters, 366 selfloop transitions, 250 changer transitions 39/655 dead transitions. [2023-01-28 09:16:27,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 655 transitions, 9387 flow [2023-01-28 09:16:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:16:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:16:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3453 transitions. [2023-01-28 09:16:27,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36332070707070707 [2023-01-28 09:16:27,009 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3453 transitions. [2023-01-28 09:16:27,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3453 transitions. [2023-01-28 09:16:27,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:27,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3453 transitions. [2023-01-28 09:16:27,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 215.8125) internal successors, (3453), 16 states have internal predecessors, (3453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:27,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:27,018 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:27,018 INFO L175 Difference]: Start difference. First operand has 167 places, 350 transitions, 4907 flow. Second operand 16 states and 3453 transitions. [2023-01-28 09:16:27,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 655 transitions, 9387 flow [2023-01-28 09:16:28,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 655 transitions, 8962 flow, removed 120 selfloop flow, removed 7 redundant places. [2023-01-28 09:16:28,883 INFO L231 Difference]: Finished difference. Result has 182 places, 439 transitions, 6604 flow [2023-01-28 09:16:28,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6604, PETRI_PLACES=182, PETRI_TRANSITIONS=439} [2023-01-28 09:16:28,884 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 144 predicate places. [2023-01-28 09:16:28,884 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 439 transitions, 6604 flow [2023-01-28 09:16:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:28,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:28,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:28,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:16:29,089 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,SelfDestructingSolverStorable22 [2023-01-28 09:16:29,090 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:29,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1006698783, now seen corresponding path program 2 times [2023-01-28 09:16:29,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:29,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374291835] [2023-01-28 09:16:29,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:29,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:29,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374291835] [2023-01-28 09:16:29,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374291835] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:29,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299156617] [2023-01-28 09:16:29,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:16:29,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:29,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:29,468 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) [2023-01-28 09:16:29,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 09:16:29,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:16:29,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:16:29,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 09:16:29,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:29,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:16:29,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299156617] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:29,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:16:29,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-01-28 09:16:29,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774465921] [2023-01-28 09:16:29,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:29,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:16:29,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:16:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:16:29,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 594 [2023-01-28 09:16:29,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 439 transitions, 6604 flow. Second operand has 9 states, 9 states have (on average 205.55555555555554) internal successors, (1850), 9 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:29,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:29,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 594 [2023-01-28 09:16:29,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:33,138 INFO L130 PetriNetUnfolder]: 13377/19984 cut-off events. [2023-01-28 09:16:33,139 INFO L131 PetriNetUnfolder]: For 185888/185888 co-relation queries the response was YES. [2023-01-28 09:16:33,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105190 conditions, 19984 events. 13377/19984 cut-off events. For 185888/185888 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 128356 event pairs, 2638 based on Foata normal form. 327/19213 useless extension candidates. Maximal degree in co-relation 105125. Up to 8884 conditions per place. [2023-01-28 09:16:33,274 INFO L137 encePairwiseOnDemand]: 582/594 looper letters, 298 selfloop transitions, 284 changer transitions 20/602 dead transitions. [2023-01-28 09:16:33,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 602 transitions, 9626 flow [2023-01-28 09:16:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:16:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:16:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1951 transitions. [2023-01-28 09:16:33,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3649457538346427 [2023-01-28 09:16:33,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1951 transitions. [2023-01-28 09:16:33,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1951 transitions. [2023-01-28 09:16:33,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:33,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1951 transitions. [2023-01-28 09:16:33,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.77777777777777) internal successors, (1951), 9 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:33,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 594.0) internal successors, (5940), 10 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:33,282 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 594.0) internal successors, (5940), 10 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:33,282 INFO L175 Difference]: Start difference. First operand has 182 places, 439 transitions, 6604 flow. Second operand 9 states and 1951 transitions. [2023-01-28 09:16:33,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 602 transitions, 9626 flow [2023-01-28 09:16:35,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 602 transitions, 9395 flow, removed 101 selfloop flow, removed 5 redundant places. [2023-01-28 09:16:35,994 INFO L231 Difference]: Finished difference. Result has 188 places, 484 transitions, 8077 flow [2023-01-28 09:16:35,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=6245, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8077, PETRI_PLACES=188, PETRI_TRANSITIONS=484} [2023-01-28 09:16:35,994 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 150 predicate places. [2023-01-28 09:16:35,994 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 484 transitions, 8077 flow [2023-01-28 09:16:35,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 205.55555555555554) internal successors, (1850), 9 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:35,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:35,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:36,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 09:16:36,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:36,199 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:36,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1314180504, now seen corresponding path program 2 times [2023-01-28 09:16:36,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:36,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837057443] [2023-01-28 09:16:36,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:36,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:36,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:36,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:36,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837057443] [2023-01-28 09:16:36,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837057443] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:36,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215629820] [2023-01-28 09:16:36,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:16:36,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:36,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:36,373 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) [2023-01-28 09:16:36,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 09:16:36,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:16:36,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:16:36,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 09:16:36,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:36,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:16:36,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215629820] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:36,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:16:36,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:16:36,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891321595] [2023-01-28 09:16:36,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:36,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:16:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:16:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:16:36,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:16:36,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 484 transitions, 8077 flow. Second operand has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:36,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:36,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:16:36,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:40,862 INFO L130 PetriNetUnfolder]: 15608/22845 cut-off events. [2023-01-28 09:16:40,863 INFO L131 PetriNetUnfolder]: For 218392/218392 co-relation queries the response was YES. [2023-01-28 09:16:40,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128918 conditions, 22845 events. 15608/22845 cut-off events. For 218392/218392 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 143637 event pairs, 2781 based on Foata normal form. 14/21593 useless extension candidates. Maximal degree in co-relation 128851. Up to 12753 conditions per place. [2023-01-28 09:16:41,020 INFO L137 encePairwiseOnDemand]: 578/594 looper letters, 403 selfloop transitions, 294 changer transitions 14/711 dead transitions. [2023-01-28 09:16:41,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 711 transitions, 11946 flow [2023-01-28 09:16:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 09:16:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 09:16:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2918 transitions. [2023-01-28 09:16:41,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35088985088985086 [2023-01-28 09:16:41,040 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2918 transitions. [2023-01-28 09:16:41,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2918 transitions. [2023-01-28 09:16:41,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:41,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2918 transitions. [2023-01-28 09:16:41,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 208.42857142857142) internal successors, (2918), 14 states have internal predecessors, (2918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:41,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 594.0) internal successors, (8910), 15 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:41,047 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 594.0) internal successors, (8910), 15 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:41,047 INFO L175 Difference]: Start difference. First operand has 188 places, 484 transitions, 8077 flow. Second operand 14 states and 2918 transitions. [2023-01-28 09:16:41,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 711 transitions, 11946 flow [2023-01-28 09:16:43,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 711 transitions, 11287 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-01-28 09:16:43,167 INFO L231 Difference]: Finished difference. Result has 201 places, 558 transitions, 9468 flow [2023-01-28 09:16:43,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=7566, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9468, PETRI_PLACES=201, PETRI_TRANSITIONS=558} [2023-01-28 09:16:43,168 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 163 predicate places. [2023-01-28 09:16:43,168 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 558 transitions, 9468 flow [2023-01-28 09:16:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:43,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:43,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:43,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 09:16:43,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:43,373 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:43,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash 141783206, now seen corresponding path program 3 times [2023-01-28 09:16:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475923109] [2023-01-28 09:16:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:43,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475923109] [2023-01-28 09:16:43,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475923109] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:43,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566043773] [2023-01-28 09:16:43,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:16:43,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:43,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:43,517 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) [2023-01-28 09:16:43,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 09:16:43,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:16:43,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:16:43,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 09:16:43,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:44,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:16:44,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566043773] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:44,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:16:44,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:16:44,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962125462] [2023-01-28 09:16:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:44,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:16:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:44,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:16:44,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:16:44,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:16:44,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 558 transitions, 9468 flow. Second operand has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:44,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:44,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:16:44,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:48,286 INFO L130 PetriNetUnfolder]: 15712/23102 cut-off events. [2023-01-28 09:16:48,286 INFO L131 PetriNetUnfolder]: For 239582/239582 co-relation queries the response was YES. [2023-01-28 09:16:48,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130517 conditions, 23102 events. 15712/23102 cut-off events. For 239582/239582 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 146872 event pairs, 2491 based on Foata normal form. 126/21942 useless extension candidates. Maximal degree in co-relation 130446. Up to 12194 conditions per place. [2023-01-28 09:16:48,448 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 412 selfloop transitions, 329 changer transitions 10/751 dead transitions. [2023-01-28 09:16:48,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 751 transitions, 12718 flow [2023-01-28 09:16:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:16:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:16:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3126 transitions. [2023-01-28 09:16:48,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35084175084175084 [2023-01-28 09:16:48,452 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3126 transitions. [2023-01-28 09:16:48,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3126 transitions. [2023-01-28 09:16:48,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:48,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3126 transitions. [2023-01-28 09:16:48,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 208.4) internal successors, (3126), 15 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:48,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 594.0) internal successors, (9504), 16 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:48,459 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 594.0) internal successors, (9504), 16 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:48,459 INFO L175 Difference]: Start difference. First operand has 201 places, 558 transitions, 9468 flow. Second operand 15 states and 3126 transitions. [2023-01-28 09:16:48,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 751 transitions, 12718 flow [2023-01-28 09:16:50,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 751 transitions, 12595 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-01-28 09:16:50,800 INFO L231 Difference]: Finished difference. Result has 216 places, 594 transitions, 10798 flow [2023-01-28 09:16:50,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=9301, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10798, PETRI_PLACES=216, PETRI_TRANSITIONS=594} [2023-01-28 09:16:50,801 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 178 predicate places. [2023-01-28 09:16:50,801 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 594 transitions, 10798 flow [2023-01-28 09:16:50,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:50,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:16:50,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:16:50,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 09:16:51,011 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,SelfDestructingSolverStorable25 [2023-01-28 09:16:51,012 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:16:51,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:16:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1833563647, now seen corresponding path program 3 times [2023-01-28 09:16:51,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:16:51,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652725990] [2023-01-28 09:16:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:16:51,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:16:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:16:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:16:51,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:16:51,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652725990] [2023-01-28 09:16:51,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652725990] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:16:51,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406774436] [2023-01-28 09:16:51,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:16:51,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:16:51,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:16:51,685 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) [2023-01-28 09:16:51,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 09:16:51,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:16:51,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:16:51,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 09:16:51,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:16:52,353 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:16:52,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 81 [2023-01-28 09:16:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:16:52,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:16:52,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406774436] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:16:52,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:16:52,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 17 [2023-01-28 09:16:52,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82384059] [2023-01-28 09:16:52,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:16:52,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:16:52,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:16:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:16:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-01-28 09:16:52,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:16:52,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 594 transitions, 10798 flow. Second operand has 11 states, 11 states have (on average 197.0909090909091) internal successors, (2168), 11 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:52,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:16:52,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:16:52,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:16:57,143 INFO L130 PetriNetUnfolder]: 16812/24689 cut-off events. [2023-01-28 09:16:57,143 INFO L131 PetriNetUnfolder]: For 315246/315246 co-relation queries the response was YES. [2023-01-28 09:16:57,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147547 conditions, 24689 events. 16812/24689 cut-off events. For 315246/315246 co-relation queries the response was YES. Maximal size of possible extension queue 1198. Compared 158717 event pairs, 2801 based on Foata normal form. 249/23544 useless extension candidates. Maximal degree in co-relation 147471. Up to 15629 conditions per place. [2023-01-28 09:16:57,375 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 474 selfloop transitions, 366 changer transitions 14/854 dead transitions. [2023-01-28 09:16:57,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 854 transitions, 15237 flow [2023-01-28 09:16:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 09:16:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 09:16:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4159 transitions. [2023-01-28 09:16:57,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3500841750841751 [2023-01-28 09:16:57,389 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4159 transitions. [2023-01-28 09:16:57,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4159 transitions. [2023-01-28 09:16:57,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:16:57,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4159 transitions. [2023-01-28 09:16:57,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 207.95) internal successors, (4159), 20 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:57,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 594.0) internal successors, (12474), 21 states have internal predecessors, (12474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:57,399 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 594.0) internal successors, (12474), 21 states have internal predecessors, (12474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:16:57,399 INFO L175 Difference]: Start difference. First operand has 216 places, 594 transitions, 10798 flow. Second operand 20 states and 4159 transitions. [2023-01-28 09:16:57,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 854 transitions, 15237 flow [2023-01-28 09:17:00,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 854 transitions, 14881 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-01-28 09:17:00,602 INFO L231 Difference]: Finished difference. Result has 240 places, 695 transitions, 13614 flow [2023-01-28 09:17:00,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=10524, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=13614, PETRI_PLACES=240, PETRI_TRANSITIONS=695} [2023-01-28 09:17:00,603 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 202 predicate places. [2023-01-28 09:17:00,603 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 695 transitions, 13614 flow [2023-01-28 09:17:00,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 197.0909090909091) internal successors, (2168), 11 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:00,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:17:00,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:17:00,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 09:17:00,805 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,SelfDestructingSolverStorable26 [2023-01-28 09:17:00,806 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:17:00,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:17:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1459391252, now seen corresponding path program 4 times [2023-01-28 09:17:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:17:00,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815631744] [2023-01-28 09:17:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:17:00,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:17:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:17:01,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:17:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:17:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815631744] [2023-01-28 09:17:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815631744] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412655415] [2023-01-28 09:17:01,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:17:01,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:01,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:17:01,009 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:17:01,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 09:17:01,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:17:01,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:17:01,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 09:17:01,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:17:01,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:17:01,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 81 [2023-01-28 09:17:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:17:01,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:17:01,947 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:17:01,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:17:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:17:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412655415] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:03,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:17:03,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-01-28 09:17:03,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749041990] [2023-01-28 09:17:03,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:17:03,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:17:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:17:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:17:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2023-01-28 09:17:03,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:17:03,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 695 transitions, 13614 flow. Second operand has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:03,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:17:03,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:17:03,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:17:10,666 INFO L130 PetriNetUnfolder]: 22729/33687 cut-off events. [2023-01-28 09:17:10,666 INFO L131 PetriNetUnfolder]: For 578241/578241 co-relation queries the response was YES. [2023-01-28 09:17:10,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225149 conditions, 33687 events. 22729/33687 cut-off events. For 578241/578241 co-relation queries the response was YES. Maximal size of possible extension queue 1708. Compared 231917 event pairs, 1601 based on Foata normal form. 19/31800 useless extension candidates. Maximal degree in co-relation 225062. Up to 9833 conditions per place. [2023-01-28 09:17:11,016 INFO L137 encePairwiseOnDemand]: 578/594 looper letters, 647 selfloop transitions, 421 changer transitions 29/1097 dead transitions. [2023-01-28 09:17:11,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1097 transitions, 21307 flow [2023-01-28 09:17:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 09:17:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 09:17:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2949 transitions. [2023-01-28 09:17:11,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3546176046176046 [2023-01-28 09:17:11,019 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2949 transitions. [2023-01-28 09:17:11,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2949 transitions. [2023-01-28 09:17:11,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:17:11,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2949 transitions. [2023-01-28 09:17:11,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 210.64285714285714) internal successors, (2949), 14 states have internal predecessors, (2949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:11,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 594.0) internal successors, (8910), 15 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:11,026 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 594.0) internal successors, (8910), 15 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:11,026 INFO L175 Difference]: Start difference. First operand has 240 places, 695 transitions, 13614 flow. Second operand 14 states and 2949 transitions. [2023-01-28 09:17:11,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1097 transitions, 21307 flow [2023-01-28 09:17:18,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1097 transitions, 20587 flow, removed 67 selfloop flow, removed 6 redundant places. [2023-01-28 09:17:18,627 INFO L231 Difference]: Finished difference. Result has 253 places, 804 transitions, 16593 flow [2023-01-28 09:17:18,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=13034, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=16593, PETRI_PLACES=253, PETRI_TRANSITIONS=804} [2023-01-28 09:17:18,627 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 215 predicate places. [2023-01-28 09:17:18,627 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 804 transitions, 16593 flow [2023-01-28 09:17:18,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:18,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:17:18,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:17:18,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 09:17:18,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-01-28 09:17:18,832 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:17:18,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:17:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1550042883, now seen corresponding path program 4 times [2023-01-28 09:17:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:17:18,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346647744] [2023-01-28 09:17:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:17:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:17:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:17:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:17:19,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:17:19,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346647744] [2023-01-28 09:17:19,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346647744] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:19,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624690257] [2023-01-28 09:17:19,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:17:19,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:17:19,051 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:17:19,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 09:17:19,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:17:19,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:17:19,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 09:17:19,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:17:19,466 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:17:19,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 78 [2023-01-28 09:17:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:17:19,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:17:19,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:17:19,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:17:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:17:20,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624690257] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:20,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:17:20,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-01-28 09:17:20,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280791169] [2023-01-28 09:17:20,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:17:20,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:17:20,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:17:20,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:17:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2023-01-28 09:17:20,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:17:20,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 804 transitions, 16593 flow. Second operand has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:20,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:17:20,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:17:20,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:17:28,139 INFO L130 PetriNetUnfolder]: 22650/33576 cut-off events. [2023-01-28 09:17:28,139 INFO L131 PetriNetUnfolder]: For 730957/730957 co-relation queries the response was YES. [2023-01-28 09:17:28,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233740 conditions, 33576 events. 22650/33576 cut-off events. For 730957/730957 co-relation queries the response was YES. Maximal size of possible extension queue 1692. Compared 230581 event pairs, 2937 based on Foata normal form. 2/31672 useless extension candidates. Maximal degree in co-relation 233648. Up to 13072 conditions per place. [2023-01-28 09:17:28,560 INFO L137 encePairwiseOnDemand]: 580/594 looper letters, 575 selfloop transitions, 431 changer transitions 9/1015 dead transitions. [2023-01-28 09:17:28,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 1015 transitions, 21100 flow [2023-01-28 09:17:28,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 09:17:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 09:17:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2739 transitions. [2023-01-28 09:17:28,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3547008547008547 [2023-01-28 09:17:28,563 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2739 transitions. [2023-01-28 09:17:28,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2739 transitions. [2023-01-28 09:17:28,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:17:28,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2739 transitions. [2023-01-28 09:17:28,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 210.69230769230768) internal successors, (2739), 13 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:28,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:28,570 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:28,570 INFO L175 Difference]: Start difference. First operand has 253 places, 804 transitions, 16593 flow. Second operand 13 states and 2739 transitions. [2023-01-28 09:17:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 1015 transitions, 21100 flow [2023-01-28 09:17:40,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 1015 transitions, 20699 flow, removed 114 selfloop flow, removed 7 redundant places. [2023-01-28 09:17:40,267 INFO L231 Difference]: Finished difference. Result has 260 places, 808 transitions, 17294 flow [2023-01-28 09:17:40,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=16309, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17294, PETRI_PLACES=260, PETRI_TRANSITIONS=808} [2023-01-28 09:17:40,268 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 222 predicate places. [2023-01-28 09:17:40,268 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 808 transitions, 17294 flow [2023-01-28 09:17:40,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:40,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:17:40,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:17:40,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 09:17:40,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-01-28 09:17:40,473 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:17:40,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:17:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash 749821040, now seen corresponding path program 5 times [2023-01-28 09:17:40,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:17:40,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580894759] [2023-01-28 09:17:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:17:40,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:17:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:17:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:17:40,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:17:40,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580894759] [2023-01-28 09:17:40,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580894759] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:40,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346379759] [2023-01-28 09:17:40,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:17:40,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:17:40,609 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:17:40,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 09:17:40,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:17:40,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:17:40,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 09:17:40,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:17:41,051 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:17:41,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 81 [2023-01-28 09:17:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:17:41,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:17:41,320 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:17:41,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:17:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:17:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346379759] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:42,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:17:42,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-01-28 09:17:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373091725] [2023-01-28 09:17:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:17:42,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:17:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:17:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:17:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2023-01-28 09:17:42,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:17:42,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 808 transitions, 17294 flow. Second operand has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:42,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:17:42,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:17:42,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:17:50,391 INFO L130 PetriNetUnfolder]: 23804/35379 cut-off events. [2023-01-28 09:17:50,391 INFO L131 PetriNetUnfolder]: For 714179/714179 co-relation queries the response was YES. [2023-01-28 09:17:50,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247453 conditions, 35379 events. 23804/35379 cut-off events. For 714179/714179 co-relation queries the response was YES. Maximal size of possible extension queue 1776. Compared 246156 event pairs, 2771 based on Foata normal form. 21/33406 useless extension candidates. Maximal degree in co-relation 247361. Up to 15046 conditions per place. [2023-01-28 09:17:50,854 INFO L137 encePairwiseOnDemand]: 578/594 looper letters, 635 selfloop transitions, 402 changer transitions 28/1065 dead transitions. [2023-01-28 09:17:50,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 1065 transitions, 22815 flow [2023-01-28 09:17:50,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 09:17:50,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 09:17:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2735 transitions. [2023-01-28 09:17:50,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35418285418285417 [2023-01-28 09:17:50,857 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2735 transitions. [2023-01-28 09:17:50,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2735 transitions. [2023-01-28 09:17:50,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:17:50,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2735 transitions. [2023-01-28 09:17:50,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 210.3846153846154) internal successors, (2735), 13 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:50,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:50,863 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:50,863 INFO L175 Difference]: Start difference. First operand has 260 places, 808 transitions, 17294 flow. Second operand 13 states and 2735 transitions. [2023-01-28 09:17:50,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 1065 transitions, 22815 flow [2023-01-28 09:17:59,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 1065 transitions, 21880 flow, removed 28 selfloop flow, removed 11 redundant places. [2023-01-28 09:17:59,465 INFO L231 Difference]: Finished difference. Result has 265 places, 851 transitions, 18672 flow [2023-01-28 09:17:59,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=16449, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=18672, PETRI_PLACES=265, PETRI_TRANSITIONS=851} [2023-01-28 09:17:59,466 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 227 predicate places. [2023-01-28 09:17:59,466 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 851 transitions, 18672 flow [2023-01-28 09:17:59,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:17:59,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:17:59,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:17:59,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 09:17:59,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:59,670 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:17:59,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:17:59,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1153144357, now seen corresponding path program 5 times [2023-01-28 09:17:59,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:17:59,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946373076] [2023-01-28 09:17:59,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:17:59,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:17:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:17:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:17:59,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:17:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946373076] [2023-01-28 09:17:59,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946373076] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:17:59,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103089764] [2023-01-28 09:17:59,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:17:59,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:17:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:17:59,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:17:59,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 09:18:00,057 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:18:00,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:18:00,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 09:18:00,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:18:00,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:18:00,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:18:00,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:18:00,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:18:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:18:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103089764] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:18:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:18:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-01-28 09:18:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947783304] [2023-01-28 09:18:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:18:01,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:18:01,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:18:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:18:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-01-28 09:18:01,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:18:01,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 851 transitions, 18672 flow. Second operand has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:01,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:18:01,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:18:01,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:18:11,262 INFO L130 PetriNetUnfolder]: 23805/35466 cut-off events. [2023-01-28 09:18:11,262 INFO L131 PetriNetUnfolder]: For 837453/837453 co-relation queries the response was YES. [2023-01-28 09:18:11,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255607 conditions, 35466 events. 23805/35466 cut-off events. For 837453/837453 co-relation queries the response was YES. Maximal size of possible extension queue 1797. Compared 247607 event pairs, 3077 based on Foata normal form. 6/33450 useless extension candidates. Maximal degree in co-relation 255510. Up to 13545 conditions per place. [2023-01-28 09:18:11,808 INFO L137 encePairwiseOnDemand]: 580/594 looper letters, 672 selfloop transitions, 403 changer transitions 19/1094 dead transitions. [2023-01-28 09:18:11,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1094 transitions, 24066 flow [2023-01-28 09:18:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 09:18:11,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 09:18:11,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2736 transitions. [2023-01-28 09:18:11,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3543123543123543 [2023-01-28 09:18:11,811 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2736 transitions. [2023-01-28 09:18:11,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2736 transitions. [2023-01-28 09:18:11,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:18:11,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2736 transitions. [2023-01-28 09:18:11,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 210.46153846153845) internal successors, (2736), 13 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:11,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:11,831 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:11,831 INFO L175 Difference]: Start difference. First operand has 265 places, 851 transitions, 18672 flow. Second operand 13 states and 2736 transitions. [2023-01-28 09:18:11,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1094 transitions, 24066 flow [2023-01-28 09:18:25,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 1094 transitions, 23313 flow, removed 167 selfloop flow, removed 8 redundant places. [2023-01-28 09:18:25,379 INFO L231 Difference]: Finished difference. Result has 274 places, 878 transitions, 19662 flow [2023-01-28 09:18:25,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=18078, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=19662, PETRI_PLACES=274, PETRI_TRANSITIONS=878} [2023-01-28 09:18:25,379 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 236 predicate places. [2023-01-28 09:18:25,380 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 878 transitions, 19662 flow [2023-01-28 09:18:25,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:25,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:18:25,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:18:25,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-28 09:18:25,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-01-28 09:18:25,584 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:18:25,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:18:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1760226384, now seen corresponding path program 6 times [2023-01-28 09:18:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:18:25,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526062843] [2023-01-28 09:18:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:18:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:18:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:18:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:18:25,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:18:25,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526062843] [2023-01-28 09:18:25,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526062843] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:18:25,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389374831] [2023-01-28 09:18:25,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:18:25,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:18:25,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:18:25,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:18:25,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 09:18:25,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 09:18:25,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:18:25,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 38 conjunts are in the unsatisfiable core [2023-01-28 09:18:25,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:18:26,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:18:26,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:18:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389374831] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:18:26,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:18:26,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:18:26,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554033073] [2023-01-28 09:18:26,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:18:26,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:18:26,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:18:26,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:18:26,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:18:26,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:18:26,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 878 transitions, 19662 flow. Second operand has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:26,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:18:26,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:18:26,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:18:36,218 INFO L130 PetriNetUnfolder]: 23600/35175 cut-off events. [2023-01-28 09:18:36,218 INFO L131 PetriNetUnfolder]: For 838763/838763 co-relation queries the response was YES. [2023-01-28 09:18:36,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254979 conditions, 35175 events. 23600/35175 cut-off events. For 838763/838763 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 245469 event pairs, 4435 based on Foata normal form. 42/33199 useless extension candidates. Maximal degree in co-relation 254879. Up to 21113 conditions per place. [2023-01-28 09:18:36,751 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 542 selfloop transitions, 495 changer transitions 9/1046 dead transitions. [2023-01-28 09:18:36,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1046 transitions, 23362 flow [2023-01-28 09:18:36,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:18:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:18:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3131 transitions. [2023-01-28 09:18:36,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35140291806958474 [2023-01-28 09:18:36,754 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3131 transitions. [2023-01-28 09:18:36,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3131 transitions. [2023-01-28 09:18:36,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:18:36,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3131 transitions. [2023-01-28 09:18:36,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 208.73333333333332) internal successors, (3131), 15 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:36,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 594.0) internal successors, (9504), 16 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:36,761 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 594.0) internal successors, (9504), 16 states have internal predecessors, (9504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:36,761 INFO L175 Difference]: Start difference. First operand has 274 places, 878 transitions, 19662 flow. Second operand 15 states and 3131 transitions. [2023-01-28 09:18:36,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1046 transitions, 23362 flow [2023-01-28 09:18:48,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 1046 transitions, 22685 flow, removed 42 selfloop flow, removed 7 redundant places. [2023-01-28 09:18:48,915 INFO L231 Difference]: Finished difference. Result has 286 places, 878 transitions, 20243 flow [2023-01-28 09:18:48,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=18947, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=20243, PETRI_PLACES=286, PETRI_TRANSITIONS=878} [2023-01-28 09:18:48,916 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 248 predicate places. [2023-01-28 09:18:48,917 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 878 transitions, 20243 flow [2023-01-28 09:18:48,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:48,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:18:48,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:18:48,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 09:18:49,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:18:49,124 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:18:49,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:18:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1381273835, now seen corresponding path program 6 times [2023-01-28 09:18:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:18:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671122202] [2023-01-28 09:18:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:18:49,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:18:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:18:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:18:49,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:18:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671122202] [2023-01-28 09:18:49,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671122202] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:18:49,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926771030] [2023-01-28 09:18:49,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:18:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:18:49,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:18:49,250 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:18:49,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 09:18:49,371 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 09:18:49,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:18:49,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 09:18:49,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:18:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:18:49,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:18:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926771030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:18:49,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:18:49,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:18:49,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321105053] [2023-01-28 09:18:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:18:49,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:18:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:18:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:18:49,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:18:49,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 594 [2023-01-28 09:18:49,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 878 transitions, 20243 flow. Second operand has 12 states, 12 states have (on average 200.91666666666666) internal successors, (2411), 12 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:49,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:18:49,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 594 [2023-01-28 09:18:49,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:18:58,002 INFO L130 PetriNetUnfolder]: 23379/34834 cut-off events. [2023-01-28 09:18:58,002 INFO L131 PetriNetUnfolder]: For 763903/763903 co-relation queries the response was YES. [2023-01-28 09:18:58,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251152 conditions, 34834 events. 23379/34834 cut-off events. For 763903/763903 co-relation queries the response was YES. Maximal size of possible extension queue 1750. Compared 241847 event pairs, 3563 based on Foata normal form. 37/32869 useless extension candidates. Maximal degree in co-relation 251047. Up to 18492 conditions per place. [2023-01-28 09:18:58,494 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 447 selfloop transitions, 547 changer transitions 11/1005 dead transitions. [2023-01-28 09:18:58,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 1005 transitions, 23446 flow [2023-01-28 09:18:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 09:18:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 09:18:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2756 transitions. [2023-01-28 09:18:58,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2023-01-28 09:18:58,497 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2756 transitions. [2023-01-28 09:18:58,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2756 transitions. [2023-01-28 09:18:58,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:18:58,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2756 transitions. [2023-01-28 09:18:58,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.0) internal successors, (2756), 13 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:58,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:58,516 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 594.0) internal successors, (8316), 14 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:18:58,516 INFO L175 Difference]: Start difference. First operand has 286 places, 878 transitions, 20243 flow. Second operand 13 states and 2756 transitions. [2023-01-28 09:18:58,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 1005 transitions, 23446 flow [2023-01-28 09:19:09,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1005 transitions, 22628 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-01-28 09:19:09,557 INFO L231 Difference]: Finished difference. Result has 293 places, 881 transitions, 20713 flow [2023-01-28 09:19:09,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=19353, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20713, PETRI_PLACES=293, PETRI_TRANSITIONS=881} [2023-01-28 09:19:09,558 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 255 predicate places. [2023-01-28 09:19:09,558 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 881 transitions, 20713 flow [2023-01-28 09:19:09,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 200.91666666666666) internal successors, (2411), 12 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:09,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:19:09,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:19:09,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 09:19:09,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:19:09,763 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:19:09,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:19:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash -91455062, now seen corresponding path program 7 times [2023-01-28 09:19:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:19:09,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068822178] [2023-01-28 09:19:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:19:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:19:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:19:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:19:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:19:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068822178] [2023-01-28 09:19:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068822178] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:19:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658139036] [2023-01-28 09:19:09,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:19:09,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:19:09,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:19:09,924 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:19:09,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 09:19:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:19:10,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 09:19:10,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:19:10,316 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:19:10,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 79 [2023-01-28 09:19:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:19:10,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:19:10,655 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:19:10,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:19:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:19:11,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658139036] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:19:11,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:19:11,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-01-28 09:19:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757735236] [2023-01-28 09:19:11,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:19:11,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:19:11,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:19:11,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:19:11,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2023-01-28 09:19:11,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:19:11,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 881 transitions, 20713 flow. Second operand has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:11,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:19:11,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:19:11,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:19:22,286 INFO L130 PetriNetUnfolder]: 23785/35596 cut-off events. [2023-01-28 09:19:22,287 INFO L131 PetriNetUnfolder]: For 791573/791573 co-relation queries the response was YES. [2023-01-28 09:19:22,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259730 conditions, 35596 events. 23785/35596 cut-off events. For 791573/791573 co-relation queries the response was YES. Maximal size of possible extension queue 1790. Compared 250623 event pairs, 2579 based on Foata normal form. 4/33598 useless extension candidates. Maximal degree in co-relation 259621. Up to 11880 conditions per place. [2023-01-28 09:19:22,964 INFO L137 encePairwiseOnDemand]: 577/594 looper letters, 493 selfloop transitions, 601 changer transitions 17/1111 dead transitions. [2023-01-28 09:19:22,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1111 transitions, 25815 flow [2023-01-28 09:19:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:19:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:19:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3333 transitions. [2023-01-28 09:19:22,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2023-01-28 09:19:22,968 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3333 transitions. [2023-01-28 09:19:22,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3333 transitions. [2023-01-28 09:19:22,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:19:22,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3333 transitions. [2023-01-28 09:19:22,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 208.3125) internal successors, (3333), 16 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:22,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:22,978 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:22,978 INFO L175 Difference]: Start difference. First operand has 293 places, 881 transitions, 20713 flow. Second operand 16 states and 3333 transitions. [2023-01-28 09:19:22,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1111 transitions, 25815 flow [2023-01-28 09:19:37,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1111 transitions, 24699 flow, removed 36 selfloop flow, removed 9 redundant places. [2023-01-28 09:19:37,433 INFO L231 Difference]: Finished difference. Result has 304 places, 910 transitions, 21947 flow [2023-01-28 09:19:37,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=19661, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=881, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=572, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=21947, PETRI_PLACES=304, PETRI_TRANSITIONS=910} [2023-01-28 09:19:37,433 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 266 predicate places. [2023-01-28 09:19:37,433 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 910 transitions, 21947 flow [2023-01-28 09:19:37,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.3) internal successors, (1973), 10 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:37,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:19:37,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:19:37,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 09:19:37,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-01-28 09:19:37,639 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:19:37,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:19:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash -187961245, now seen corresponding path program 4 times [2023-01-28 09:19:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:19:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745357700] [2023-01-28 09:19:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:19:37,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:19:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:19:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:19:37,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:19:37,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745357700] [2023-01-28 09:19:37,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745357700] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:19:37,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377402978] [2023-01-28 09:19:37,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:19:37,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:19:37,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:19:37,966 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:19:37,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 09:19:38,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:19:38,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:19:38,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 09:19:38,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:19:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:19:38,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:19:38,681 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:19:38,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:19:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:19:39,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377402978] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:19:39,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:19:39,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 24 [2023-01-28 09:19:39,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210227460] [2023-01-28 09:19:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:19:39,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:19:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:19:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:19:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2023-01-28 09:19:39,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 594 [2023-01-28 09:19:39,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 910 transitions, 21947 flow. Second operand has 10 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:39,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:19:39,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 594 [2023-01-28 09:19:39,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:19:49,631 INFO L130 PetriNetUnfolder]: 23718/35976 cut-off events. [2023-01-28 09:19:49,631 INFO L131 PetriNetUnfolder]: For 906504/906504 co-relation queries the response was YES. [2023-01-28 09:19:50,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256795 conditions, 35976 events. 23718/35976 cut-off events. For 906504/906504 co-relation queries the response was YES. Maximal size of possible extension queue 1916. Compared 260749 event pairs, 5803 based on Foata normal form. 586/34458 useless extension candidates. Maximal degree in co-relation 256682. Up to 11578 conditions per place. [2023-01-28 09:19:50,199 INFO L137 encePairwiseOnDemand]: 580/594 looper letters, 567 selfloop transitions, 563 changer transitions 45/1175 dead transitions. [2023-01-28 09:19:50,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1175 transitions, 27825 flow [2023-01-28 09:19:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:19:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:19:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3683 transitions. [2023-01-28 09:19:50,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36472568825510004 [2023-01-28 09:19:50,202 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3683 transitions. [2023-01-28 09:19:50,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3683 transitions. [2023-01-28 09:19:50,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:19:50,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3683 transitions. [2023-01-28 09:19:50,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 216.64705882352942) internal successors, (3683), 17 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:50,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:50,209 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:19:50,209 INFO L175 Difference]: Start difference. First operand has 304 places, 910 transitions, 21947 flow. Second operand 17 states and 3683 transitions. [2023-01-28 09:19:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1175 transitions, 27825 flow [2023-01-28 09:20:04,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1175 transitions, 26725 flow, removed 103 selfloop flow, removed 8 redundant places. [2023-01-28 09:20:04,296 INFO L231 Difference]: Finished difference. Result has 320 places, 949 transitions, 23534 flow [2023-01-28 09:20:04,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=20976, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=910, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=23534, PETRI_PLACES=320, PETRI_TRANSITIONS=949} [2023-01-28 09:20:04,297 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 282 predicate places. [2023-01-28 09:20:04,297 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 949 transitions, 23534 flow [2023-01-28 09:20:04,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:04,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:20:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:20:04,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 09:20:04,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:20:04,501 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:20:04,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:20:04,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1982050721, now seen corresponding path program 7 times [2023-01-28 09:20:04,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:20:04,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670247232] [2023-01-28 09:20:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:20:04,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:20:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:20:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:20:04,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:20:04,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670247232] [2023-01-28 09:20:04,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670247232] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:20:04,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703900254] [2023-01-28 09:20:04,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:20:04,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:20:04,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:20:04,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:20:04,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 09:20:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:20:04,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 09:20:04,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:20:05,182 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:20:05,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 101 [2023-01-28 09:20:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:20:05,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:20:05,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:20:05,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:20:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:20:07,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703900254] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:20:07,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:20:07,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6, 11] total 28 [2023-01-28 09:20:07,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780712054] [2023-01-28 09:20:07,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:20:07,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:20:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:20:07,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:20:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2023-01-28 09:20:07,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 594 [2023-01-28 09:20:07,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 949 transitions, 23534 flow. Second operand has 13 states, 13 states have (on average 200.76923076923077) internal successors, (2610), 13 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:07,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:20:07,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 594 [2023-01-28 09:20:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:20:20,765 INFO L130 PetriNetUnfolder]: 23408/35373 cut-off events. [2023-01-28 09:20:20,765 INFO L131 PetriNetUnfolder]: For 958898/958898 co-relation queries the response was YES. [2023-01-28 09:20:21,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264964 conditions, 35373 events. 23408/35373 cut-off events. For 958898/958898 co-relation queries the response was YES. Maximal size of possible extension queue 1890. Compared 254271 event pairs, 3727 based on Foata normal form. 1/33270 useless extension candidates. Maximal degree in co-relation 264843. Up to 15123 conditions per place. [2023-01-28 09:20:21,332 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 666 selfloop transitions, 441 changer transitions 23/1130 dead transitions. [2023-01-28 09:20:21,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 1130 transitions, 27588 flow [2023-01-28 09:20:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 09:20:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 09:20:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3392 transitions. [2023-01-28 09:20:21,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569023569023569 [2023-01-28 09:20:21,335 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3392 transitions. [2023-01-28 09:20:21,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3392 transitions. [2023-01-28 09:20:21,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:20:21,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3392 transitions. [2023-01-28 09:20:21,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.0) internal successors, (3392), 16 states have internal predecessors, (3392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:21,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:21,342 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 594.0) internal successors, (10098), 17 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:21,342 INFO L175 Difference]: Start difference. First operand has 320 places, 949 transitions, 23534 flow. Second operand 16 states and 3392 transitions. [2023-01-28 09:20:21,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 1130 transitions, 27588 flow [2023-01-28 09:20:42,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1130 transitions, 27046 flow, removed 87 selfloop flow, removed 8 redundant places. [2023-01-28 09:20:42,264 INFO L231 Difference]: Finished difference. Result has 330 places, 960 transitions, 24189 flow [2023-01-28 09:20:42,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=23008, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=24189, PETRI_PLACES=330, PETRI_TRANSITIONS=960} [2023-01-28 09:20:42,265 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 292 predicate places. [2023-01-28 09:20:42,266 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 960 transitions, 24189 flow [2023-01-28 09:20:42,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 200.76923076923077) internal successors, (2610), 13 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:42,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:20:42,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:20:42,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 09:20:42,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:20:42,469 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:20:42,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:20:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1622135649, now seen corresponding path program 8 times [2023-01-28 09:20:42,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:20:42,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069102531] [2023-01-28 09:20:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:20:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:20:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:20:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:20:42,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:20:42,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069102531] [2023-01-28 09:20:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069102531] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:20:42,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480588288] [2023-01-28 09:20:42,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:20:42,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:20:42,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:20:42,587 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:20:42,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 09:20:42,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:20:42,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:20:42,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 09:20:42,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:20:43,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:20:43,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 81 [2023-01-28 09:20:43,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:20:43,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:20:43,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480588288] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:20:43,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:20:43,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:20:43,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005529950] [2023-01-28 09:20:43,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:20:43,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:20:43,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:20:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:20:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:20:43,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:20:43,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 960 transitions, 24189 flow. Second operand has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:43,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:20:43,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:20:43,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:20:52,590 INFO L130 PetriNetUnfolder]: 23246/35167 cut-off events. [2023-01-28 09:20:52,591 INFO L131 PetriNetUnfolder]: For 947672/947672 co-relation queries the response was YES. [2023-01-28 09:20:52,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267558 conditions, 35167 events. 23246/35167 cut-off events. For 947672/947672 co-relation queries the response was YES. Maximal size of possible extension queue 1849. Compared 252388 event pairs, 3657 based on Foata normal form. 53/33124 useless extension candidates. Maximal degree in co-relation 267435. Up to 17902 conditions per place. [2023-01-28 09:20:53,228 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 496 selfloop transitions, 598 changer transitions 25/1119 dead transitions. [2023-01-28 09:20:53,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 1119 transitions, 27653 flow [2023-01-28 09:20:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 09:20:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 09:20:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3728 transitions. [2023-01-28 09:20:53,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486719042274598 [2023-01-28 09:20:53,231 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3728 transitions. [2023-01-28 09:20:53,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3728 transitions. [2023-01-28 09:20:53,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:20:53,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3728 transitions. [2023-01-28 09:20:53,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 207.11111111111111) internal successors, (3728), 18 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:53,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 594.0) internal successors, (11286), 19 states have internal predecessors, (11286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:53,238 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 594.0) internal successors, (11286), 19 states have internal predecessors, (11286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:20:53,238 INFO L175 Difference]: Start difference. First operand has 330 places, 960 transitions, 24189 flow. Second operand 18 states and 3728 transitions. [2023-01-28 09:20:53,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 1119 transitions, 27653 flow [2023-01-28 09:21:09,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 1119 transitions, 26995 flow, removed 54 selfloop flow, removed 9 redundant places. [2023-01-28 09:21:09,861 INFO L231 Difference]: Finished difference. Result has 339 places, 960 transitions, 24844 flow [2023-01-28 09:21:09,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=23510, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=24844, PETRI_PLACES=339, PETRI_TRANSITIONS=960} [2023-01-28 09:21:09,862 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 301 predicate places. [2023-01-28 09:21:09,862 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 960 transitions, 24844 flow [2023-01-28 09:21:09,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:09,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:09,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:09,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-01-28 09:21:10,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:10,063 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:21:10,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:10,063 INFO L85 PathProgramCache]: Analyzing trace with hash 857805660, now seen corresponding path program 8 times [2023-01-28 09:21:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:10,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193589197] [2023-01-28 09:21:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:10,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:21:10,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193589197] [2023-01-28 09:21:10,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193589197] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:21:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003927981] [2023-01-28 09:21:10,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:21:10,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:10,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:21:10,182 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:21:10,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 09:21:10,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 09:21:10,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:21:10,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 09:21:10,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:21:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:21:10,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:21:10,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003927981] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:21:10,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:21:10,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 15 [2023-01-28 09:21:10,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659196003] [2023-01-28 09:21:10,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:10,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:21:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:10,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:21:10,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-01-28 09:21:10,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:21:10,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 960 transitions, 24844 flow. Second operand has 11 states, 11 states have (on average 197.0909090909091) internal successors, (2168), 11 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:10,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:10,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:21:10,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:20,165 INFO L130 PetriNetUnfolder]: 22363/34077 cut-off events. [2023-01-28 09:21:20,165 INFO L131 PetriNetUnfolder]: For 979654/979654 co-relation queries the response was YES. [2023-01-28 09:21:20,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257250 conditions, 34077 events. 22363/34077 cut-off events. For 979654/979654 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 247425 event pairs, 3725 based on Foata normal form. 316/32313 useless extension candidates. Maximal degree in co-relation 257125. Up to 21107 conditions per place. [2023-01-28 09:21:20,753 INFO L137 encePairwiseOnDemand]: 579/594 looper letters, 624 selfloop transitions, 541 changer transitions 26/1191 dead transitions. [2023-01-28 09:21:20,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 1191 transitions, 29571 flow [2023-01-28 09:21:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 09:21:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 09:21:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3775 transitions. [2023-01-28 09:21:20,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35306771417882526 [2023-01-28 09:21:20,756 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3775 transitions. [2023-01-28 09:21:20,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3775 transitions. [2023-01-28 09:21:20,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:20,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3775 transitions. [2023-01-28 09:21:20,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 209.72222222222223) internal successors, (3775), 18 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:20,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 594.0) internal successors, (11286), 19 states have internal predecessors, (11286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:20,763 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 594.0) internal successors, (11286), 19 states have internal predecessors, (11286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:20,763 INFO L175 Difference]: Start difference. First operand has 339 places, 960 transitions, 24844 flow. Second operand 18 states and 3775 transitions. [2023-01-28 09:21:20,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 1191 transitions, 29571 flow [2023-01-28 09:21:37,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 1191 transitions, 28540 flow, removed 77 selfloop flow, removed 10 redundant places. [2023-01-28 09:21:37,527 INFO L231 Difference]: Finished difference. Result has 350 places, 981 transitions, 25652 flow [2023-01-28 09:21:37,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=23484, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=945, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=25652, PETRI_PLACES=350, PETRI_TRANSITIONS=981} [2023-01-28 09:21:37,528 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 312 predicate places. [2023-01-28 09:21:37,528 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 981 transitions, 25652 flow [2023-01-28 09:21:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 197.0909090909091) internal successors, (2168), 11 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:37,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:21:37,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:21:37,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 09:21:37,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-28 09:21:37,734 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:21:37,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:21:37,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1131905989, now seen corresponding path program 5 times [2023-01-28 09:21:37,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:21:37,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433070218] [2023-01-28 09:21:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:21:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:21:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:21:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:21:38,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:21:38,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433070218] [2023-01-28 09:21:38,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433070218] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:21:38,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282977504] [2023-01-28 09:21:38,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:21:38,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:21:38,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:21:38,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:21:38,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 09:21:38,159 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:21:38,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:21:38,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 09:21:38,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:21:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:21:38,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:21:38,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:21:38,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:21:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:21:39,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282977504] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:21:39,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:21:39,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-01-28 09:21:39,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541015346] [2023-01-28 09:21:39,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:21:39,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:21:39,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:21:39,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:21:39,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:21:39,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 594 [2023-01-28 09:21:39,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 981 transitions, 25652 flow. Second operand has 10 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:39,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:21:39,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 594 [2023-01-28 09:21:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:21:50,406 INFO L130 PetriNetUnfolder]: 22299/33910 cut-off events. [2023-01-28 09:21:50,411 INFO L131 PetriNetUnfolder]: For 1017741/1017741 co-relation queries the response was YES. [2023-01-28 09:21:50,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259913 conditions, 33910 events. 22299/33910 cut-off events. For 1017741/1017741 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 245138 event pairs, 5229 based on Foata normal form. 15/31845 useless extension candidates. Maximal degree in co-relation 259783. Up to 10842 conditions per place. [2023-01-28 09:21:50,913 INFO L137 encePairwiseOnDemand]: 581/594 looper letters, 570 selfloop transitions, 554 changer transitions 63/1187 dead transitions. [2023-01-28 09:21:50,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1187 transitions, 30300 flow [2023-01-28 09:21:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:21:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:21:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3667 transitions. [2023-01-28 09:21:50,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631412160823925 [2023-01-28 09:21:50,916 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3667 transitions. [2023-01-28 09:21:50,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3667 transitions. [2023-01-28 09:21:50,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:21:50,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3667 transitions. [2023-01-28 09:21:50,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 215.7058823529412) internal successors, (3667), 17 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:50,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:50,923 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:21:50,923 INFO L175 Difference]: Start difference. First operand has 350 places, 981 transitions, 25652 flow. Second operand 17 states and 3667 transitions. [2023-01-28 09:21:50,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1187 transitions, 30300 flow [2023-01-28 09:22:06,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 1187 transitions, 29307 flow, removed 66 selfloop flow, removed 8 redundant places. [2023-01-28 09:22:06,029 INFO L231 Difference]: Finished difference. Result has 360 places, 957 transitions, 25119 flow [2023-01-28 09:22:06,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=24680, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=981, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=25119, PETRI_PLACES=360, PETRI_TRANSITIONS=957} [2023-01-28 09:22:06,032 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 322 predicate places. [2023-01-28 09:22:06,032 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 957 transitions, 25119 flow [2023-01-28 09:22:06,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:06,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:22:06,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:22:06,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 09:22:06,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-01-28 09:22:06,242 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:22:06,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:22:06,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1496257113, now seen corresponding path program 6 times [2023-01-28 09:22:06,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:22:06,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038696449] [2023-01-28 09:22:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:22:06,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:22:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:22:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:22:06,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:22:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038696449] [2023-01-28 09:22:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038696449] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:22:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119984703] [2023-01-28 09:22:06,742 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:22:06,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:22:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:22:06,743 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:22:06,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 09:22:06,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-01-28 09:22:06,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:22:06,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 09:22:06,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:22:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:22:07,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:22:07,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119984703] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:22:07,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:22:07,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-01-28 09:22:07,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597769374] [2023-01-28 09:22:07,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:22:07,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:22:07,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:22:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:22:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:22:07,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 594 [2023-01-28 09:22:07,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 957 transitions, 25119 flow. Second operand has 9 states, 9 states have (on average 205.55555555555554) internal successors, (1850), 9 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:07,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:22:07,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 594 [2023-01-28 09:22:07,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:22:18,106 INFO L130 PetriNetUnfolder]: 22265/33767 cut-off events. [2023-01-28 09:22:18,106 INFO L131 PetriNetUnfolder]: For 1027068/1027068 co-relation queries the response was YES. [2023-01-28 09:22:18,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258412 conditions, 33767 events. 22265/33767 cut-off events. For 1027068/1027068 co-relation queries the response was YES. Maximal size of possible extension queue 1798. Compared 242254 event pairs, 5355 based on Foata normal form. 15/31668 useless extension candidates. Maximal degree in co-relation 258280. Up to 12820 conditions per place. [2023-01-28 09:22:18,717 INFO L137 encePairwiseOnDemand]: 583/594 looper letters, 467 selfloop transitions, 592 changer transitions 30/1089 dead transitions. [2023-01-28 09:22:18,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1089 transitions, 29065 flow [2023-01-28 09:22:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:22:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:22:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1950 transitions. [2023-01-28 09:22:18,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36475869809203143 [2023-01-28 09:22:18,720 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1950 transitions. [2023-01-28 09:22:18,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1950 transitions. [2023-01-28 09:22:18,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:22:18,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1950 transitions. [2023-01-28 09:22:18,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 216.66666666666666) internal successors, (1950), 9 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:18,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 594.0) internal successors, (5940), 10 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:18,726 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 594.0) internal successors, (5940), 10 states have internal predecessors, (5940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:18,726 INFO L175 Difference]: Start difference. First operand has 360 places, 957 transitions, 25119 flow. Second operand 9 states and 1950 transitions. [2023-01-28 09:22:18,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1089 transitions, 29065 flow [2023-01-28 09:22:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1089 transitions, 28460 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-01-28 09:22:34,939 INFO L231 Difference]: Finished difference. Result has 358 places, 969 transitions, 26430 flow [2023-01-28 09:22:34,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=24514, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26430, PETRI_PLACES=358, PETRI_TRANSITIONS=969} [2023-01-28 09:22:34,940 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 320 predicate places. [2023-01-28 09:22:34,940 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 969 transitions, 26430 flow [2023-01-28 09:22:34,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 205.55555555555554) internal successors, (1850), 9 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:34,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:22:34,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:22:34,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-01-28 09:22:35,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-01-28 09:22:35,146 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:22:35,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:22:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1657957736, now seen corresponding path program 9 times [2023-01-28 09:22:35,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:22:35,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755734020] [2023-01-28 09:22:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:22:35,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:22:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:22:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:22:35,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:22:35,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755734020] [2023-01-28 09:22:35,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755734020] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:22:35,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768199982] [2023-01-28 09:22:35,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:22:35,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:22:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:22:35,295 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:22:35,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 09:22:35,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:22:35,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:22:35,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-28 09:22:35,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:22:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:22:35,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:22:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768199982] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:22:35,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:22:35,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:22:35,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113147755] [2023-01-28 09:22:35,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:22:35,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:22:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:22:35,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:22:35,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:22:35,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:22:35,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 969 transitions, 26430 flow. Second operand has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:35,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:22:35,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:22:35,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:22:45,878 INFO L130 PetriNetUnfolder]: 22063/33348 cut-off events. [2023-01-28 09:22:45,878 INFO L131 PetriNetUnfolder]: For 1022972/1022972 co-relation queries the response was YES. [2023-01-28 09:22:46,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265553 conditions, 33348 events. 22063/33348 cut-off events. For 1022972/1022972 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 237870 event pairs, 3641 based on Foata normal form. 4/31238 useless extension candidates. Maximal degree in co-relation 265420. Up to 20787 conditions per place. [2023-01-28 09:22:46,460 INFO L137 encePairwiseOnDemand]: 580/594 looper letters, 620 selfloop transitions, 510 changer transitions 15/1145 dead transitions. [2023-01-28 09:22:46,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 1145 transitions, 30506 flow [2023-01-28 09:22:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:22:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:22:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3538 transitions. [2023-01-28 09:22:46,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3503664091899386 [2023-01-28 09:22:46,463 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3538 transitions. [2023-01-28 09:22:46,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3538 transitions. [2023-01-28 09:22:46,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:22:46,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3538 transitions. [2023-01-28 09:22:46,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 208.11764705882354) internal successors, (3538), 17 states have internal predecessors, (3538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:46,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:46,469 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:22:46,469 INFO L175 Difference]: Start difference. First operand has 358 places, 969 transitions, 26430 flow. Second operand 17 states and 3538 transitions. [2023-01-28 09:22:46,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 1145 transitions, 30506 flow [2023-01-28 09:23:04,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 1145 transitions, 29330 flow, removed 41 selfloop flow, removed 7 redundant places. [2023-01-28 09:23:04,603 INFO L231 Difference]: Finished difference. Result has 368 places, 970 transitions, 26325 flow [2023-01-28 09:23:04,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=25278, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=507, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=26325, PETRI_PLACES=368, PETRI_TRANSITIONS=970} [2023-01-28 09:23:04,605 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 330 predicate places. [2023-01-28 09:23:04,605 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 970 transitions, 26325 flow [2023-01-28 09:23:04,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:23:04,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:23:04,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:23:04,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 09:23:04,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:23:04,812 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:23:04,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:23:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash 485061456, now seen corresponding path program 10 times [2023-01-28 09:23:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:23:04,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736783462] [2023-01-28 09:23:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:23:04,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:23:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:23:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:23:05,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:23:05,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736783462] [2023-01-28 09:23:05,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736783462] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:23:05,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943691998] [2023-01-28 09:23:05,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:23:05,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:23:05,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:23:05,018 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:23:05,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 09:23:05,182 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:23:05,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:23:05,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 09:23:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:23:05,514 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:23:05,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 79 [2023-01-28 09:23:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:23:05,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:23:06,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:23:06,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:23:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:23:07,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943691998] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:23:07,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:23:07,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 11] total 24 [2023-01-28 09:23:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74984507] [2023-01-28 09:23:07,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:23:07,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:23:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:23:07,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:23:07,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2023-01-28 09:23:07,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 594 [2023-01-28 09:23:07,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 970 transitions, 26325 flow. Second operand has 8 states, 8 states have (on average 223.875) internal successors, (1791), 8 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:23:07,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:23:07,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 594 [2023-01-28 09:23:07,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:23:33,119 INFO L130 PetriNetUnfolder]: 48741/73393 cut-off events. [2023-01-28 09:23:33,120 INFO L131 PetriNetUnfolder]: For 2301921/2301921 co-relation queries the response was YES. [2023-01-28 09:23:34,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570425 conditions, 73393 events. 48741/73393 cut-off events. For 2301921/2301921 co-relation queries the response was YES. Maximal size of possible extension queue 3685. Compared 575758 event pairs, 5734 based on Foata normal form. 5/68840 useless extension candidates. Maximal degree in co-relation 570293. Up to 27290 conditions per place. [2023-01-28 09:23:34,693 INFO L137 encePairwiseOnDemand]: 580/594 looper letters, 1274 selfloop transitions, 1714 changer transitions 23/3011 dead transitions. [2023-01-28 09:23:34,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 3011 transitions, 86789 flow [2023-01-28 09:23:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 09:23:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 09:23:34,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6098 transitions. [2023-01-28 09:23:34,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39484589484589483 [2023-01-28 09:23:34,698 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6098 transitions. [2023-01-28 09:23:34,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6098 transitions. [2023-01-28 09:23:34,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:23:34,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6098 transitions. [2023-01-28 09:23:34,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 234.53846153846155) internal successors, (6098), 26 states have internal predecessors, (6098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:23:34,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 594.0) internal successors, (16038), 27 states have internal predecessors, (16038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:23:34,708 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 594.0) internal successors, (16038), 27 states have internal predecessors, (16038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:23:34,708 INFO L175 Difference]: Start difference. First operand has 368 places, 970 transitions, 26325 flow. Second operand 26 states and 6098 transitions. [2023-01-28 09:23:34,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 3011 transitions, 86789 flow [2023-01-28 09:24:59,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 3011 transitions, 83949 flow, removed 48 selfloop flow, removed 10 redundant places. [2023-01-28 09:24:59,322 INFO L231 Difference]: Finished difference. Result has 402 places, 2390 transitions, 73220 flow [2023-01-28 09:24:59,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=25456, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=970, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=352, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=73220, PETRI_PLACES=402, PETRI_TRANSITIONS=2390} [2023-01-28 09:24:59,323 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 364 predicate places. [2023-01-28 09:24:59,323 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 2390 transitions, 73220 flow [2023-01-28 09:24:59,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 223.875) internal successors, (1791), 8 states have internal predecessors, (1791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:24:59,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:24:59,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:24:59,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-28 09:24:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:24:59,529 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:24:59,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:24:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash -859825455, now seen corresponding path program 9 times [2023-01-28 09:24:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:24:59,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151896382] [2023-01-28 09:24:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:24:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:24:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:24:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:24:59,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:24:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151896382] [2023-01-28 09:24:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151896382] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:24:59,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397386373] [2023-01-28 09:24:59,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:24:59,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:24:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:24:59,637 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:24:59,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 09:24:59,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 09:24:59,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:24:59,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 09:24:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:25:00,155 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:25:00,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 81 [2023-01-28 09:25:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:25:00,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 09:25:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397386373] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:25:00,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 09:25:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-01-28 09:25:00,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999574360] [2023-01-28 09:25:00,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:25:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:25:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:25:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:25:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:25:00,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 594 [2023-01-28 09:25:00,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 2390 transitions, 73220 flow. Second operand has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:25:00,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:25:00,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 594 [2023-01-28 09:25:00,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:25:33,949 INFO L130 PetriNetUnfolder]: 48684/73375 cut-off events. [2023-01-28 09:25:33,949 INFO L131 PetriNetUnfolder]: For 2861864/2861864 co-relation queries the response was YES. [2023-01-28 09:25:35,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624709 conditions, 73375 events. 48684/73375 cut-off events. For 2861864/2861864 co-relation queries the response was YES. Maximal size of possible extension queue 3674. Compared 573621 event pairs, 6953 based on Foata normal form. 8/68825 useless extension candidates. Maximal degree in co-relation 624560. Up to 37016 conditions per place. [2023-01-28 09:25:35,878 INFO L137 encePairwiseOnDemand]: 580/594 looper letters, 999 selfloop transitions, 1589 changer transitions 28/2616 dead transitions. [2023-01-28 09:25:35,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 2616 transitions, 80945 flow [2023-01-28 09:25:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:25:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:25:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3527 transitions. [2023-01-28 09:25:35,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492770845712022 [2023-01-28 09:25:35,881 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3527 transitions. [2023-01-28 09:25:35,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3527 transitions. [2023-01-28 09:25:35,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:25:35,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3527 transitions. [2023-01-28 09:25:35,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 207.47058823529412) internal successors, (3527), 17 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:25:35,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:25:35,887 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:25:35,888 INFO L175 Difference]: Start difference. First operand has 402 places, 2390 transitions, 73220 flow. Second operand 17 states and 3527 transitions. [2023-01-28 09:25:35,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 2616 transitions, 80945 flow [2023-01-28 09:27:37,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 2616 transitions, 79925 flow, removed 510 selfloop flow, removed 0 redundant places. [2023-01-28 09:27:37,829 INFO L231 Difference]: Finished difference. Result has 421 places, 2383 transitions, 75396 flow [2023-01-28 09:27:37,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=594, PETRI_DIFFERENCE_MINUEND_FLOW=72296, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1589, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=75396, PETRI_PLACES=421, PETRI_TRANSITIONS=2383} [2023-01-28 09:27:37,830 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 383 predicate places. [2023-01-28 09:27:37,831 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 2383 transitions, 75396 flow [2023-01-28 09:27:37,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:27:37,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:27:37,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:27:37,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-28 09:27:38,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-01-28 09:27:38,037 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 09:27:38,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:27:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1854259699, now seen corresponding path program 7 times [2023-01-28 09:27:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:27:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932427104] [2023-01-28 09:27:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:27:38,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:27:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:27:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:27:38,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:27:38,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932427104] [2023-01-28 09:27:38,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932427104] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:27:38,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549461749] [2023-01-28 09:27:38,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 09:27:38,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:27:38,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:27:38,330 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:27:38,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 09:27:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:27:38,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 09:27:38,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:27:38,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:27:38,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 73 [2023-01-28 09:27:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:27:38,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:27:38,905 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 09:27:38,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-01-28 09:27:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:27:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549461749] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 09:27:40,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 09:27:40,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 24 [2023-01-28 09:27:40,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356924904] [2023-01-28 09:27:40,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:27:40,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:27:40,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:27:40,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:27:40,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2023-01-28 09:27:40,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 594 [2023-01-28 09:27:40,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 2383 transitions, 75396 flow. Second operand has 10 states, 10 states have (on average 205.3) internal successors, (2053), 10 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:27:40,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:27:40,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 594 [2023-01-28 09:27:40,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:28:15,180 INFO L130 PetriNetUnfolder]: 48608/73171 cut-off events. [2023-01-28 09:28:15,180 INFO L131 PetriNetUnfolder]: For 3028290/3028290 co-relation queries the response was YES. [2023-01-28 09:28:16,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633986 conditions, 73171 events. 48608/73171 cut-off events. For 3028290/3028290 co-relation queries the response was YES. Maximal size of possible extension queue 3666. Compared 571692 event pairs, 11174 based on Foata normal form. 24/68637 useless extension candidates. Maximal degree in co-relation 633833. Up to 24831 conditions per place. [2023-01-28 09:28:17,189 INFO L137 encePairwiseOnDemand]: 581/594 looper letters, 1111 selfloop transitions, 1467 changer transitions 97/2675 dead transitions. [2023-01-28 09:28:17,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 2675 transitions, 83790 flow [2023-01-28 09:28:17,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 09:28:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 09:28:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3663 transitions. [2023-01-28 09:28:17,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3627450980392157 [2023-01-28 09:28:17,205 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3663 transitions. [2023-01-28 09:28:17,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3663 transitions. [2023-01-28 09:28:17,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:28:17,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3663 transitions. [2023-01-28 09:28:17,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 215.47058823529412) internal successors, (3663), 17 states have internal predecessors, (3663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:28:17,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:28:17,218 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 594.0) internal successors, (10692), 18 states have internal predecessors, (10692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:28:17,218 INFO L175 Difference]: Start difference. First operand has 421 places, 2383 transitions, 75396 flow. Second operand 17 states and 3663 transitions. [2023-01-28 09:28:17,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 2675 transitions, 83790 flow Received shutdown request... [2023-01-28 09:29:12,655 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:29:12,655 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:29:13,191 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:29:13,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-01-28 09:29:13,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-01-28 09:29:13,397 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 09:29:13,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:29:13,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:29:13,398 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:29:13,399 INFO L445 BasicCegarLoop]: Path program histogram: [10, 9, 7, 6, 5, 5, 1, 1] [2023-01-28 09:29:13,401 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:29:13,401 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:29:13,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:29:13 BasicIcfg [2023-01-28 09:29:13,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:29:13,402 INFO L158 Benchmark]: Toolchain (without parser) took 808463.54ms. Allocated memory was 612.4MB in the beginning and 14.5GB in the end (delta: 13.9GB). Free memory was 562.6MB in the beginning and 9.4GB in the end (delta: -8.8GB). Peak memory consumption was 6.2GB. Max. memory is 16.0GB. [2023-01-28 09:29:13,403 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 383.8MB. Free memory is still 331.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:29:13,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.53ms. Allocated memory is still 612.4MB. Free memory was 562.6MB in the beginning and 550.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 09:29:13,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.52ms. Allocated memory is still 612.4MB. Free memory was 550.1MB in the beginning and 548.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:29:13,403 INFO L158 Benchmark]: Boogie Preprocessor took 22.51ms. Allocated memory is still 612.4MB. Free memory was 548.0MB in the beginning and 545.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:29:13,403 INFO L158 Benchmark]: RCFGBuilder took 401.42ms. Allocated memory is still 612.4MB. Free memory was 545.9MB in the beginning and 522.1MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 09:29:13,403 INFO L158 Benchmark]: TraceAbstraction took 807737.64ms. Allocated memory was 612.4MB in the beginning and 14.5GB in the end (delta: 13.9GB). Free memory was 521.5MB in the beginning and 9.4GB in the end (delta: -8.9GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-01-28 09:29:13,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 383.8MB. Free memory is still 331.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 255.53ms. Allocated memory is still 612.4MB. Free memory was 562.6MB in the beginning and 550.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.52ms. Allocated memory is still 612.4MB. Free memory was 550.1MB in the beginning and 548.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.51ms. Allocated memory is still 612.4MB. Free memory was 548.0MB in the beginning and 545.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 401.42ms. Allocated memory is still 612.4MB. Free memory was 545.9MB in the beginning and 522.1MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 807737.64ms. Allocated memory was 612.4MB in the beginning and 14.5GB in the end (delta: 13.9GB). Free memory was 521.5MB in the beginning and 9.4GB in the end (delta: -8.9GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 265 PlacesBefore, 38 PlacesAfterwards, 284 TransitionsBefore, 39 TransitionsAfterwards, 7560 CoEnabledTransitionPairs, 7 FixpointIterations, 147 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 21 ConcurrentYvCompositions, 18 ChoiceCompositions, 297 TotalNumberOfCompositions, 9778 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7112, independent: 6972, independent conditional: 0, independent unconditional: 6972, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4276, independent: 4240, independent conditional: 0, independent unconditional: 4240, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7112, independent: 2732, independent conditional: 0, independent unconditional: 2732, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 4276, unknown conditional: 0, unknown unconditional: 4276] , Statistics on independence cache: Total cache size (in pairs): 152, Positive cache size: 141, Positive conditional cache size: 0, Positive unconditional cache size: 141, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 350 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 807.6s, OverallIterations: 44, TraceHistogramMax: 1, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 753.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7675 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7675 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 9.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 382 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17189 IncrementalHoareTripleChecker+Invalid, 17571 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 382 mSolverCounterUnsat, 0 mSDtfsCounter, 17189 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1438 GetRequests, 567 SyntacticMatches, 1 SemanticMatches, 870 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5548 ImplicationChecksByTransitivity, 29.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75396occurred in iteration=43, InterpolantAutomatonStates: 479, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 37.1s InterpolantComputationTime, 1567 NumberOfCodeBlocks, 1554 NumberOfCodeBlocksAsserted, 77 NumberOfCheckSat, 1783 ConstructedInterpolants, 0 QuantifiedInterpolants, 32708 SizeOfPredicates, 652 NumberOfNonLiveVariables, 7267 ConjunctsInSsa, 884 ConjunctsInUnsatCore, 83 InterpolantComputations, 44 PerfectInterpolantSequences, 26/65 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown