/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/popl20-bad-buffer-mult-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:00:21,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:00:21,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:00:21,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:00:21,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:00:21,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:00:21,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:00:21,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:00:21,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:00:21,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:00:21,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:00:21,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:00:21,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:00:21,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:00:21,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:00:21,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:00:21,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:00:21,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:00:21,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:00:21,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:00:21,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:00:21,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:00:21,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:00:21,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:00:21,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:00:21,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:00:21,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:00:21,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:00:21,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:00:21,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:00:21,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:00:21,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:00:21,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:00:21,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:00:21,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:00:21,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:00:21,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:00:21,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:00:21,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:00:21,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:00:21,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:00:21,559 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 10:00:21,573 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:00:21,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:00:21,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:00:21,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:00:21,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:00:21,574 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:00:21,574 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:00:21,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:00:21,574 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:00:21,575 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:00:21,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:00:21,576 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:00:21,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:00:21,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:00:21,577 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:00:21,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:00:21,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:00:21,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:00:21,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:00:21,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:00:21,762 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:00:21,762 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:00:21,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-01-28 10:00:22,737 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:00:22,905 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:00:22,905 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt2.wvr.c [2023-01-28 10:00:22,913 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed228c33/da66cbe3ca0f45ae91e1817540f88567/FLAGc2da45b1b [2023-01-28 10:00:22,930 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed228c33/da66cbe3ca0f45ae91e1817540f88567 [2023-01-28 10:00:22,932 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:00:22,933 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:00:22,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:00:22,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:00:22,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:00:22,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:00:22" (1/1) ... [2023-01-28 10:00:22,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a53b2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:22, skipping insertion in model container [2023-01-28 10:00:22,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:00:22" (1/1) ... [2023-01-28 10:00:22,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:00:22,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:00:23,127 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/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2023-01-28 10:00:23,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:00:23,143 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:00:23,161 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/popl20-bad-buffer-mult-alt2.wvr.c[4174,4187] [2023-01-28 10:00:23,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:00:23,174 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:00:23,174 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:00:23,179 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:00:23,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23 WrapperNode [2023-01-28 10:00:23,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:00:23,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:00:23,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:00:23,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:00:23,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,212 INFO L138 Inliner]: procedures = 26, calls = 75, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 326 [2023-01-28 10:00:23,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:00:23,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:00:23,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:00:23,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:00:23,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,232 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:00:23,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:00:23,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:00:23,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:00:23,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (1/1) ... [2023-01-28 10:00:23,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:00:23,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:23,274 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 10:00:23,291 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 10:00:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:00:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:00:23,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:00:23,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:00:23,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 10:00:23,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:00:23,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:00:23,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:00:23,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:00:23,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:00:23,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:00:23,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:00:23,313 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 10:00:23,389 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:00:23,390 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:00:23,762 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:00:23,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:00:23,948 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 10:00:23,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:00:23 BoogieIcfgContainer [2023-01-28 10:00:23,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:00:23,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:00:23,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:00:23,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:00:23,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:00:22" (1/3) ... [2023-01-28 10:00:23,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515fc1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:00:23, skipping insertion in model container [2023-01-28 10:00:23,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:00:23" (2/3) ... [2023-01-28 10:00:23,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@515fc1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:00:23, skipping insertion in model container [2023-01-28 10:00:23,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:00:23" (3/3) ... [2023-01-28 10:00:23,958 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt2.wvr.c [2023-01-28 10:00:23,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:00:23,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:00:23,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:00:24,046 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 10:00:24,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 237 transitions, 506 flow [2023-01-28 10:00:24,175 INFO L130 PetriNetUnfolder]: 19/233 cut-off events. [2023-01-28 10:00:24,175 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:00:24,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 233 events. 19/233 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 114 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-01-28 10:00:24,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 237 transitions, 506 flow [2023-01-28 10:00:24,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 221 transitions, 466 flow [2023-01-28 10:00:24,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:00:24,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 221 transitions, 466 flow [2023-01-28 10:00:24,205 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 221 transitions, 466 flow [2023-01-28 10:00:24,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 221 transitions, 466 flow [2023-01-28 10:00:24,253 INFO L130 PetriNetUnfolder]: 19/221 cut-off events. [2023-01-28 10:00:24,253 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:00:24,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 221 events. 19/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 113 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-01-28 10:00:24,256 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-28 10:00:31,273 INFO L134 LiptonReduction]: Checked pairs total: 3053 [2023-01-28 10:00:31,273 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-01-28 10:00:31,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:00:31,287 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;@7a3eb2ce, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:00:31,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 10:00:31,291 INFO L130 PetriNetUnfolder]: 6/34 cut-off events. [2023-01-28 10:00:31,292 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:00:31,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:31,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:00:31,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:00:31,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1951107260, now seen corresponding path program 1 times [2023-01-28 10:00:31,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522133663] [2023-01-28 10:00:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:31,866 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 10:00:31,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:31,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522133663] [2023-01-28 10:00:31,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522133663] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:00:31,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:00:31,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:00:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747060393] [2023-01-28 10:00:31,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:00:31,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:00:31,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:00:31,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:00:31,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 461 [2023-01-28 10:00:31,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 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 10:00:31,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:31,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 461 [2023-01-28 10:00:31,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:32,305 INFO L130 PetriNetUnfolder]: 2592/3424 cut-off events. [2023-01-28 10:00:32,306 INFO L131 PetriNetUnfolder]: For 281/281 co-relation queries the response was YES. [2023-01-28 10:00:32,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 3424 events. 2592/3424 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 14436 event pairs, 355 based on Foata normal form. 0/2355 useless extension candidates. Maximal degree in co-relation 5848. Up to 1372 conditions per place. [2023-01-28 10:00:32,324 INFO L137 encePairwiseOnDemand]: 455/461 looper letters, 66 selfloop transitions, 6 changer transitions 9/84 dead transitions. [2023-01-28 10:00:32,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 84 transitions, 387 flow [2023-01-28 10:00:32,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:00:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:00:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2023-01-28 10:00:32,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660159074475777 [2023-01-28 10:00:32,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2023-01-28 10:00:32,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2023-01-28 10:00:32,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:32,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2023-01-28 10:00:32,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 0 states have call successors, (0), 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 10:00:32,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 10:00:32,361 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 461.0) internal successors, (3227), 7 states have internal predecessors, (3227), 0 states have call successors, (0), 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 10:00:32,363 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 94 flow. Second operand 6 states and 1289 transitions. [2023-01-28 10:00:32,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 84 transitions, 387 flow [2023-01-28 10:00:32,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 84 transitions, 349 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 10:00:32,374 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 117 flow [2023-01-28 10:00:32,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-01-28 10:00:32,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-01-28 10:00:32,379 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 117 flow [2023-01-28 10:00:32,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 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 10:00:32,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:32,380 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, 1, 1, 1, 1, 1] [2023-01-28 10:00:32,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:00:32,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:00:32,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:32,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1476163253, now seen corresponding path program 1 times [2023-01-28 10:00:32,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:32,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169350063] [2023-01-28 10:00:32,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:32,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:32,476 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 10:00:32,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:32,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169350063] [2023-01-28 10:00:32,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169350063] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:00:32,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:00:32,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:00:32,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960142861] [2023-01-28 10:00:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:00:32,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:00:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:00:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:00:32,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 461 [2023-01-28 10:00:32,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 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 10:00:32,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:32,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 461 [2023-01-28 10:00:32,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:32,783 INFO L130 PetriNetUnfolder]: 2170/3051 cut-off events. [2023-01-28 10:00:32,783 INFO L131 PetriNetUnfolder]: For 1623/1884 co-relation queries the response was YES. [2023-01-28 10:00:32,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6884 conditions, 3051 events. 2170/3051 cut-off events. For 1623/1884 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14740 event pairs, 1340 based on Foata normal form. 514/2867 useless extension candidates. Maximal degree in co-relation 4328. Up to 2387 conditions per place. [2023-01-28 10:00:32,800 INFO L137 encePairwiseOnDemand]: 455/461 looper letters, 30 selfloop transitions, 2 changer transitions 39/79 dead transitions. [2023-01-28 10:00:32,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 357 flow [2023-01-28 10:00:32,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:00:32,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:00:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1003 transitions. [2023-01-28 10:00:32,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351409978308026 [2023-01-28 10:00:32,802 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1003 transitions. [2023-01-28 10:00:32,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1003 transitions. [2023-01-28 10:00:32,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:32,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1003 transitions. [2023-01-28 10:00:32,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.6) internal successors, (1003), 5 states have internal predecessors, (1003), 0 states have call successors, (0), 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 10:00:32,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 461.0) internal successors, (2766), 6 states have internal predecessors, (2766), 0 states have call successors, (0), 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 10:00:32,808 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 461.0) internal successors, (2766), 6 states have internal predecessors, (2766), 0 states have call successors, (0), 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 10:00:32,808 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 117 flow. Second operand 5 states and 1003 transitions. [2023-01-28 10:00:32,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 357 flow [2023-01-28 10:00:32,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 79 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 10:00:32,811 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 138 flow [2023-01-28 10:00:32,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-01-28 10:00:32,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-01-28 10:00:32,812 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 138 flow [2023-01-28 10:00:32,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 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 10:00:32,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:32,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:00:32,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 10:00:32,813 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:00:32,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash -901328342, now seen corresponding path program 1 times [2023-01-28 10:00:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:32,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606787582] [2023-01-28 10:00:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:00:33,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:33,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606787582] [2023-01-28 10:00:33,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606787582] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:33,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857084395] [2023-01-28 10:00:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:33,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:33,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:33,091 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 10:00:33,092 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 10:00:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:33,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 10:00:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:00:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:00:33,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:00:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:00:33,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857084395] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:33,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:00:33,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 14 [2023-01-28 10:00:33,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856994121] [2023-01-28 10:00:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:00:33,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:00:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:33,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:00:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-01-28 10:00:33,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 461 [2023-01-28 10:00:33,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 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 10:00:33,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:33,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 461 [2023-01-28 10:00:33,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:34,122 INFO L130 PetriNetUnfolder]: 3646/4816 cut-off events. [2023-01-28 10:00:34,123 INFO L131 PetriNetUnfolder]: For 2376/2376 co-relation queries the response was YES. [2023-01-28 10:00:34,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 4816 events. 3646/4816 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 22465 event pairs, 115 based on Foata normal form. 72/3874 useless extension candidates. Maximal degree in co-relation 12320. Up to 1399 conditions per place. [2023-01-28 10:00:34,147 INFO L137 encePairwiseOnDemand]: 453/461 looper letters, 90 selfloop transitions, 15 changer transitions 0/108 dead transitions. [2023-01-28 10:00:34,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 544 flow [2023-01-28 10:00:34,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:00:34,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:00:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1465 transitions. [2023-01-28 10:00:34,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539820266501394 [2023-01-28 10:00:34,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1465 transitions. [2023-01-28 10:00:34,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1465 transitions. [2023-01-28 10:00:34,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:34,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1465 transitions. [2023-01-28 10:00:34,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.28571428571428) internal successors, (1465), 7 states have internal predecessors, (1465), 0 states have call successors, (0), 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 10:00:34,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 461.0) internal successors, (3688), 8 states have internal predecessors, (3688), 0 states have call successors, (0), 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 10:00:34,157 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 461.0) internal successors, (3688), 8 states have internal predecessors, (3688), 0 states have call successors, (0), 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 10:00:34,158 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 138 flow. Second operand 7 states and 1465 transitions. [2023-01-28 10:00:34,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 544 flow [2023-01-28 10:00:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 108 transitions, 522 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 10:00:34,163 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 232 flow [2023-01-28 10:00:34,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-01-28 10:00:34,163 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-01-28 10:00:34,163 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 232 flow [2023-01-28 10:00:34,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 199.5) internal successors, (1197), 6 states have internal predecessors, (1197), 0 states have call successors, (0), 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 10:00:34,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:34,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:00:34,172 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 10:00:34,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:34,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:00:34,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash 639416502, now seen corresponding path program 1 times [2023-01-28 10:00:34,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:34,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694281125] [2023-01-28 10:00:34,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:34,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:00:34,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:34,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694281125] [2023-01-28 10:00:34,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694281125] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:34,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277027755] [2023-01-28 10:00:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:34,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:34,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:34,866 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 10:00:34,892 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 10:00:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:34,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 51 conjunts are in the unsatisfiable core [2023-01-28 10:00:34,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:00:35,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:00:35,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:00:35,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:00:35,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-01-28 10:00:35,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 10:00:35,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:00:35,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:00:35,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:00:35,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 10:00:35,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-01-28 10:00:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:00:35,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:00:36,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:00:36,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 61 [2023-01-28 10:00:36,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5131 treesize of output 5003 [2023-01-28 10:00:36,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 299 treesize of output 275 [2023-01-28 10:00:36,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 263 [2023-01-28 10:00:36,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 215 [2023-01-28 10:00:36,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 213 [2023-01-28 10:00:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:00:37,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277027755] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:00:37,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:00:37,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 12] total 28 [2023-01-28 10:00:37,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056601453] [2023-01-28 10:00:37,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:00:37,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:00:37,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:37,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:00:37,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=699, Unknown=10, NotChecked=0, Total=870 [2023-01-28 10:00:37,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 461 [2023-01-28 10:00:37,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 232 flow. Second operand has 30 states, 30 states have (on average 140.36666666666667) internal successors, (4211), 30 states have internal predecessors, (4211), 0 states have call successors, (0), 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 10:00:37,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:37,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 461 [2023-01-28 10:00:37,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:39,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:00:41,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:00:44,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:00:46,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:00:48,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 10:00:52,385 INFO L130 PetriNetUnfolder]: 14429/19067 cut-off events. [2023-01-28 10:00:52,385 INFO L131 PetriNetUnfolder]: For 20242/20242 co-relation queries the response was YES. [2023-01-28 10:00:52,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53069 conditions, 19067 events. 14429/19067 cut-off events. For 20242/20242 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 100542 event pairs, 1213 based on Foata normal form. 164/14690 useless extension candidates. Maximal degree in co-relation 25831. Up to 5755 conditions per place. [2023-01-28 10:00:52,472 INFO L137 encePairwiseOnDemand]: 446/461 looper letters, 290 selfloop transitions, 112 changer transitions 35/440 dead transitions. [2023-01-28 10:00:52,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 440 transitions, 2637 flow [2023-01-28 10:00:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-28 10:00:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-28 10:00:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4949 transitions. [2023-01-28 10:00:52,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3253138762900151 [2023-01-28 10:00:52,482 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4949 transitions. [2023-01-28 10:00:52,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4949 transitions. [2023-01-28 10:00:52,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:52,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4949 transitions. [2023-01-28 10:00:52,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 149.96969696969697) internal successors, (4949), 33 states have internal predecessors, (4949), 0 states have call successors, (0), 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 10:00:52,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 461.0) internal successors, (15674), 34 states have internal predecessors, (15674), 0 states have call successors, (0), 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 10:00:52,504 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 461.0) internal successors, (15674), 34 states have internal predecessors, (15674), 0 states have call successors, (0), 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 10:00:52,504 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 232 flow. Second operand 33 states and 4949 transitions. [2023-01-28 10:00:52,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 440 transitions, 2637 flow [2023-01-28 10:00:52,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 440 transitions, 2542 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-01-28 10:00:52,566 INFO L231 Difference]: Finished difference. Result has 101 places, 162 transitions, 1273 flow [2023-01-28 10:00:52,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1273, PETRI_PLACES=101, PETRI_TRANSITIONS=162} [2023-01-28 10:00:52,568 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-01-28 10:00:52,568 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 162 transitions, 1273 flow [2023-01-28 10:00:52,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 140.36666666666667) internal successors, (4211), 30 states have internal predecessors, (4211), 0 states have call successors, (0), 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 10:00:52,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:52,571 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 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 10:00:52,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 10:00:52,776 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,SelfDestructingSolverStorable3 [2023-01-28 10:00:52,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:00:52,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:52,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1090131735, now seen corresponding path program 2 times [2023-01-28 10:00:52,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:52,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651707119] [2023-01-28 10:00:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:52,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:00:54,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:54,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651707119] [2023-01-28 10:00:54,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651707119] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826559482] [2023-01-28 10:00:54,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:00:54,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:54,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:54,172 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 10:00:54,177 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 10:00:54,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:00:54,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:00:54,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 10:00:54,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:00:54,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:00:54,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:00:54,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-01-28 10:00:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:00:54,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:00:54,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:00:54,641 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 45 treesize of output 37 [2023-01-28 10:00:54,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-01-28 10:00:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:00:54,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826559482] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:00:54,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:00:54,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 20 [2023-01-28 10:00:54,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135681583] [2023-01-28 10:00:54,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:00:54,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 10:00:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:00:54,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 10:00:54,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=393, Unknown=3, NotChecked=0, Total=462 [2023-01-28 10:00:54,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 461 [2023-01-28 10:00:54,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 162 transitions, 1273 flow. Second operand has 22 states, 22 states have (on average 150.54545454545453) internal successors, (3312), 22 states have internal predecessors, (3312), 0 states have call successors, (0), 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 10:00:54,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:00:54,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 461 [2023-01-28 10:00:54,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:00:58,015 INFO L130 PetriNetUnfolder]: 20278/26910 cut-off events. [2023-01-28 10:00:58,015 INFO L131 PetriNetUnfolder]: For 64078/64120 co-relation queries the response was YES. [2023-01-28 10:00:58,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90793 conditions, 26910 events. 20278/26910 cut-off events. For 64078/64120 co-relation queries the response was YES. Maximal size of possible extension queue 1285. Compared 151159 event pairs, 2920 based on Foata normal form. 284/23422 useless extension candidates. Maximal degree in co-relation 85964. Up to 12964 conditions per place. [2023-01-28 10:00:58,170 INFO L137 encePairwiseOnDemand]: 451/461 looper letters, 209 selfloop transitions, 103 changer transitions 11/328 dead transitions. [2023-01-28 10:00:58,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 328 transitions, 2908 flow [2023-01-28 10:00:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:00:58,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:00:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2073 transitions. [2023-01-28 10:00:58,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34590355414650426 [2023-01-28 10:00:58,174 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2073 transitions. [2023-01-28 10:00:58,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2073 transitions. [2023-01-28 10:00:58,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:00:58,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2073 transitions. [2023-01-28 10:00:58,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 159.46153846153845) internal successors, (2073), 13 states have internal predecessors, (2073), 0 states have call successors, (0), 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 10:00:58,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 461.0) internal successors, (6454), 14 states have internal predecessors, (6454), 0 states have call successors, (0), 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 10:00:58,185 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 461.0) internal successors, (6454), 14 states have internal predecessors, (6454), 0 states have call successors, (0), 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 10:00:58,185 INFO L175 Difference]: Start difference. First operand has 101 places, 162 transitions, 1273 flow. Second operand 13 states and 2073 transitions. [2023-01-28 10:00:58,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 328 transitions, 2908 flow [2023-01-28 10:00:58,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 328 transitions, 2818 flow, removed 44 selfloop flow, removed 1 redundant places. [2023-01-28 10:00:58,614 INFO L231 Difference]: Finished difference. Result has 117 places, 214 transitions, 1981 flow [2023-01-28 10:00:58,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1981, PETRI_PLACES=117, PETRI_TRANSITIONS=214} [2023-01-28 10:00:58,615 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 75 predicate places. [2023-01-28 10:00:58,615 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 214 transitions, 1981 flow [2023-01-28 10:00:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 150.54545454545453) internal successors, (3312), 22 states have internal predecessors, (3312), 0 states have call successors, (0), 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 10:00:58,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:00:58,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 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 10:00:58,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 10:00:58,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:58,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:00:58,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:00:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash 575406659, now seen corresponding path program 3 times [2023-01-28 10:00:58,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:00:58,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310093477] [2023-01-28 10:00:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:00:58,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:00:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:00:59,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:00:59,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:00:59,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310093477] [2023-01-28 10:00:59,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310093477] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:00:59,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712423371] [2023-01-28 10:00:59,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:00:59,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:00:59,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:00:59,597 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 10:00:59,599 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 10:00:59,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 10:00:59,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:00:59,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 31 conjunts are in the unsatisfiable core [2023-01-28 10:00:59,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:00,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:01:00,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:01:00,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:01:00,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:01:00,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-01-28 10:01:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:01:00,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:02,222 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_337 (Array Int Int)) (v_ArrVal_336 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_336) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_337) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) c_~total~0))) is different from false [2023-01-28 10:01:02,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:01:02,238 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 87 treesize of output 79 [2023-01-28 10:01:02,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2023-01-28 10:01:02,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-01-28 10:01:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 10:01:02,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712423371] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:02,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:02,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2023-01-28 10:01:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639677174] [2023-01-28 10:01:02,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:02,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 10:01:02,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 10:01:02,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=396, Unknown=2, NotChecked=40, Total=506 [2023-01-28 10:01:02,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 461 [2023-01-28 10:01:02,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 214 transitions, 1981 flow. Second operand has 23 states, 23 states have (on average 154.2173913043478) internal successors, (3547), 23 states have internal predecessors, (3547), 0 states have call successors, (0), 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 10:01:02,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:02,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 461 [2023-01-28 10:01:02,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:06,015 INFO L130 PetriNetUnfolder]: 24382/32353 cut-off events. [2023-01-28 10:01:06,015 INFO L131 PetriNetUnfolder]: For 107563/107605 co-relation queries the response was YES. [2023-01-28 10:01:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118981 conditions, 32353 events. 24382/32353 cut-off events. For 107563/107605 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 187161 event pairs, 4149 based on Foata normal form. 3/27841 useless extension candidates. Maximal degree in co-relation 114680. Up to 13115 conditions per place. [2023-01-28 10:01:06,265 INFO L137 encePairwiseOnDemand]: 452/461 looper letters, 212 selfloop transitions, 123 changer transitions 11/351 dead transitions. [2023-01-28 10:01:06,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 351 transitions, 3500 flow [2023-01-28 10:01:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 10:01:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 10:01:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2110 transitions. [2023-01-28 10:01:06,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35207742366093775 [2023-01-28 10:01:06,434 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2110 transitions. [2023-01-28 10:01:06,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2110 transitions. [2023-01-28 10:01:06,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:06,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2110 transitions. [2023-01-28 10:01:06,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 162.30769230769232) internal successors, (2110), 13 states have internal predecessors, (2110), 0 states have call successors, (0), 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 10:01:06,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 461.0) internal successors, (6454), 14 states have internal predecessors, (6454), 0 states have call successors, (0), 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 10:01:06,444 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 461.0) internal successors, (6454), 14 states have internal predecessors, (6454), 0 states have call successors, (0), 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 10:01:06,444 INFO L175 Difference]: Start difference. First operand has 117 places, 214 transitions, 1981 flow. Second operand 13 states and 2110 transitions. [2023-01-28 10:01:06,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 351 transitions, 3500 flow [2023-01-28 10:01:07,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 351 transitions, 3456 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 10:01:07,188 INFO L231 Difference]: Finished difference. Result has 127 places, 238 transitions, 2481 flow [2023-01-28 10:01:07,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2481, PETRI_PLACES=127, PETRI_TRANSITIONS=238} [2023-01-28 10:01:07,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-28 10:01:07,191 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 238 transitions, 2481 flow [2023-01-28 10:01:07,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 154.2173913043478) internal successors, (3547), 23 states have internal predecessors, (3547), 0 states have call successors, (0), 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 10:01:07,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:07,197 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 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 10:01:07,214 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 10:01:07,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:07,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:07,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:07,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1864256623, now seen corresponding path program 4 times [2023-01-28 10:01:07,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:07,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889999721] [2023-01-28 10:01:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:08,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889999721] [2023-01-28 10:01:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889999721] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:01:08,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899709187] [2023-01-28 10:01:08,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:01:08,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:08,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:01:08,206 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 10:01:08,209 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 10:01:08,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:01:08,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:01:08,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2023-01-28 10:01:08,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:01:08,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:01:08,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:01:08,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:01:08,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:01:08,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:01:08,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:01:08,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-01-28 10:01:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:08,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:01:13,577 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:01:13,578 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 341 treesize of output 321 [2023-01-28 10:01:13,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2023-01-28 10:01:13,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 134 [2023-01-28 10:01:13,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2023-01-28 10:01:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:01:13,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899709187] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:01:13,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:01:13,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 32 [2023-01-28 10:01:13,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124698541] [2023-01-28 10:01:13,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:01:13,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 10:01:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 10:01:13,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=964, Unknown=7, NotChecked=0, Total=1122 [2023-01-28 10:01:13,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 461 [2023-01-28 10:01:13,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 238 transitions, 2481 flow. Second operand has 34 states, 34 states have (on average 143.1764705882353) internal successors, (4868), 34 states have internal predecessors, (4868), 0 states have call successors, (0), 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 10:01:13,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:13,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 461 [2023-01-28 10:01:13,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:25,280 WARN L222 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 10:01:37,214 INFO L130 PetriNetUnfolder]: 66413/87676 cut-off events. [2023-01-28 10:01:37,214 INFO L131 PetriNetUnfolder]: For 338458/338591 co-relation queries the response was YES. [2023-01-28 10:01:37,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342649 conditions, 87676 events. 66413/87676 cut-off events. For 338458/338591 co-relation queries the response was YES. Maximal size of possible extension queue 4411. Compared 566964 event pairs, 4834 based on Foata normal form. 67/75464 useless extension candidates. Maximal degree in co-relation 337201. Up to 16543 conditions per place. [2023-01-28 10:01:37,940 INFO L137 encePairwiseOnDemand]: 447/461 looper letters, 510 selfloop transitions, 512 changer transitions 29/1054 dead transitions. [2023-01-28 10:01:37,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1054 transitions, 10607 flow [2023-01-28 10:01:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-28 10:01:37,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-28 10:01:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6494 transitions. [2023-01-28 10:01:37,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33539923561615537 [2023-01-28 10:01:37,950 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6494 transitions. [2023-01-28 10:01:37,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6494 transitions. [2023-01-28 10:01:37,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:37,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6494 transitions. [2023-01-28 10:01:37,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 154.61904761904762) internal successors, (6494), 42 states have internal predecessors, (6494), 0 states have call successors, (0), 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 10:01:37,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 461.0) internal successors, (19823), 43 states have internal predecessors, (19823), 0 states have call successors, (0), 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 10:01:37,979 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 461.0) internal successors, (19823), 43 states have internal predecessors, (19823), 0 states have call successors, (0), 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 10:01:37,979 INFO L175 Difference]: Start difference. First operand has 127 places, 238 transitions, 2481 flow. Second operand 42 states and 6494 transitions. [2023-01-28 10:01:37,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1054 transitions, 10607 flow [2023-01-28 10:01:42,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1054 transitions, 10312 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-01-28 10:01:42,739 INFO L231 Difference]: Finished difference. Result has 180 places, 619 transitions, 8394 flow [2023-01-28 10:01:42,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=8394, PETRI_PLACES=180, PETRI_TRANSITIONS=619} [2023-01-28 10:01:42,740 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2023-01-28 10:01:42,740 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 619 transitions, 8394 flow [2023-01-28 10:01:42,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 143.1764705882353) internal successors, (4868), 34 states have internal predecessors, (4868), 0 states have call successors, (0), 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 10:01:42,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:01:42,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:01:42,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 10:01:42,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:01:42,950 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:01:42,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:01:42,950 INFO L85 PathProgramCache]: Analyzing trace with hash -916880253, now seen corresponding path program 1 times [2023-01-28 10:01:42,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:01:42,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244258603] [2023-01-28 10:01:42,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:01:42,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:01:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:01:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:01:43,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:01:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244258603] [2023-01-28 10:01:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244258603] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:01:43,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:01:43,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:01:43,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463865675] [2023-01-28 10:01:43,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:01:43,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:01:43,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:01:43,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:01:43,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:01:43,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 461 [2023-01-28 10:01:43,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 619 transitions, 8394 flow. Second operand has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 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 10:01:43,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:01:43,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 461 [2023-01-28 10:01:43,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:01:57,206 INFO L130 PetriNetUnfolder]: 62836/88403 cut-off events. [2023-01-28 10:01:57,207 INFO L131 PetriNetUnfolder]: For 880968/888030 co-relation queries the response was YES. [2023-01-28 10:01:57,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405697 conditions, 88403 events. 62836/88403 cut-off events. For 880968/888030 co-relation queries the response was YES. Maximal size of possible extension queue 4911. Compared 665132 event pairs, 33561 based on Foata normal form. 6616/85121 useless extension candidates. Maximal degree in co-relation 401099. Up to 57325 conditions per place. [2023-01-28 10:01:58,156 INFO L137 encePairwiseOnDemand]: 456/461 looper letters, 616 selfloop transitions, 14 changer transitions 83/766 dead transitions. [2023-01-28 10:01:58,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 766 transitions, 12175 flow [2023-01-28 10:01:58,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:01:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:01:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 799 transitions. [2023-01-28 10:01:58,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43329718004338397 [2023-01-28 10:01:58,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 799 transitions. [2023-01-28 10:01:58,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 799 transitions. [2023-01-28 10:01:58,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:01:58,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 799 transitions. [2023-01-28 10:01:58,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 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 10:01:58,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 461.0) internal successors, (2305), 5 states have internal predecessors, (2305), 0 states have call successors, (0), 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 10:01:58,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 461.0) internal successors, (2305), 5 states have internal predecessors, (2305), 0 states have call successors, (0), 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 10:01:58,173 INFO L175 Difference]: Start difference. First operand has 180 places, 619 transitions, 8394 flow. Second operand 4 states and 799 transitions. [2023-01-28 10:01:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 766 transitions, 12175 flow [2023-01-28 10:02:12,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 766 transitions, 11262 flow, removed 425 selfloop flow, removed 8 redundant places. [2023-01-28 10:02:12,474 INFO L231 Difference]: Finished difference. Result has 177 places, 565 transitions, 7473 flow [2023-01-28 10:02:12,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=7273, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=7473, PETRI_PLACES=177, PETRI_TRANSITIONS=565} [2023-01-28 10:02:12,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2023-01-28 10:02:12,476 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 565 transitions, 7473 flow [2023-01-28 10:02:12,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.75) internal successors, (771), 4 states have internal predecessors, (771), 0 states have call successors, (0), 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 10:02:12,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:12,477 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 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 10:02:12,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 10:02:12,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:02:12,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash 211539907, now seen corresponding path program 5 times [2023-01-28 10:02:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:12,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022258992] [2023-01-28 10:02:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 10:02:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:12,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022258992] [2023-01-28 10:02:12,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022258992] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:02:12,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456885400] [2023-01-28 10:02:12,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:02:12,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:12,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:02:12,707 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 10:02:12,711 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 10:02:12,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 10:02:12,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:02:12,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 10:02:12,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:02:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 10:02:12,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:02:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 10:02:13,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456885400] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:02:13,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:02:13,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-01-28 10:02:13,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522110799] [2023-01-28 10:02:13,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:02:13,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 10:02:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 10:02:13,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-01-28 10:02:13,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 461 [2023-01-28 10:02:13,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 565 transitions, 7473 flow. Second operand has 18 states, 18 states have (on average 201.0) internal successors, (3618), 18 states have internal predecessors, (3618), 0 states have call successors, (0), 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 10:02:13,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:13,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 461 [2023-01-28 10:02:13,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:02:31,577 INFO L130 PetriNetUnfolder]: 91156/123839 cut-off events. [2023-01-28 10:02:31,577 INFO L131 PetriNetUnfolder]: For 774779/774905 co-relation queries the response was YES. [2023-01-28 10:02:32,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546516 conditions, 123839 events. 91156/123839 cut-off events. For 774779/774905 co-relation queries the response was YES. Maximal size of possible extension queue 6045. Compared 892316 event pairs, 6246 based on Foata normal form. 2204/125749 useless extension candidates. Maximal degree in co-relation 546460. Up to 19592 conditions per place. [2023-01-28 10:02:32,932 INFO L137 encePairwiseOnDemand]: 455/461 looper letters, 701 selfloop transitions, 393 changer transitions 5/1102 dead transitions. [2023-01-28 10:02:32,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 1102 transitions, 14692 flow [2023-01-28 10:02:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 10:02:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 10:02:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4661 transitions. [2023-01-28 10:02:32,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595740485111418 [2023-01-28 10:02:32,937 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4661 transitions. [2023-01-28 10:02:32,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4661 transitions. [2023-01-28 10:02:32,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:02:32,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4661 transitions. [2023-01-28 10:02:32,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.86363636363637) internal successors, (4661), 22 states have internal predecessors, (4661), 0 states have call successors, (0), 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 10:02:32,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 461.0) internal successors, (10603), 23 states have internal predecessors, (10603), 0 states have call successors, (0), 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 10:02:32,947 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 461.0) internal successors, (10603), 23 states have internal predecessors, (10603), 0 states have call successors, (0), 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 10:02:32,947 INFO L175 Difference]: Start difference. First operand has 177 places, 565 transitions, 7473 flow. Second operand 22 states and 4661 transitions. [2023-01-28 10:02:32,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 1102 transitions, 14692 flow [2023-01-28 10:02:58,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 1102 transitions, 14545 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-01-28 10:02:58,580 INFO L231 Difference]: Finished difference. Result has 199 places, 665 transitions, 10001 flow [2023-01-28 10:02:58,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=7009, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=10001, PETRI_PLACES=199, PETRI_TRANSITIONS=665} [2023-01-28 10:02:58,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-01-28 10:02:58,582 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 665 transitions, 10001 flow [2023-01-28 10:02:58,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 201.0) internal successors, (3618), 18 states have internal predecessors, (3618), 0 states have call successors, (0), 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 10:02:58,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:02:58,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:02:58,605 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 10:02:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:02:58,788 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:02:58,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:02:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1338260957, now seen corresponding path program 1 times [2023-01-28 10:02:58,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:02:58,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743555565] [2023-01-28 10:02:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:02:58,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:02:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:02:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:02:58,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:02:58,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743555565] [2023-01-28 10:02:58,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743555565] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:02:58,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:02:58,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:02:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512878530] [2023-01-28 10:02:58,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:02:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:02:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:02:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:02:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:02:58,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 461 [2023-01-28 10:02:58,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 665 transitions, 10001 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 10:02:58,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:02:58,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 461 [2023-01-28 10:02:58,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:03:27,015 INFO L130 PetriNetUnfolder]: 109091/153390 cut-off events. [2023-01-28 10:03:27,016 INFO L131 PetriNetUnfolder]: For 1820026/1834155 co-relation queries the response was YES. [2023-01-28 10:03:28,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722582 conditions, 153390 events. 109091/153390 cut-off events. For 1820026/1834155 co-relation queries the response was YES. Maximal size of possible extension queue 6757. Compared 1168893 event pairs, 41617 based on Foata normal form. 10038/161556 useless extension candidates. Maximal degree in co-relation 722521. Up to 76172 conditions per place. [2023-01-28 10:03:29,015 INFO L137 encePairwiseOnDemand]: 458/461 looper letters, 818 selfloop transitions, 10 changer transitions 0/912 dead transitions. [2023-01-28 10:03:29,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 912 transitions, 15737 flow [2023-01-28 10:03:29,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:03:29,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:03:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-01-28 10:03:29,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48083875632682577 [2023-01-28 10:03:29,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-01-28 10:03:29,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-01-28 10:03:29,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:03:29,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-01-28 10:03:29,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 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 10:03:29,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 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 10:03:29,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 461.0) internal successors, (1844), 4 states have internal predecessors, (1844), 0 states have call successors, (0), 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 10:03:29,034 INFO L175 Difference]: Start difference. First operand has 199 places, 665 transitions, 10001 flow. Second operand 3 states and 665 transitions. [2023-01-28 10:03:29,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 912 transitions, 15737 flow [2023-01-28 10:04:07,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 912 transitions, 15208 flow, removed 234 selfloop flow, removed 2 redundant places. [2023-01-28 10:04:07,573 INFO L231 Difference]: Finished difference. Result has 200 places, 666 transitions, 9991 flow [2023-01-28 10:04:07,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=461, PETRI_DIFFERENCE_MINUEND_FLOW=9675, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=9991, PETRI_PLACES=200, PETRI_TRANSITIONS=666} [2023-01-28 10:04:07,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 158 predicate places. [2023-01-28 10:04:07,574 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 666 transitions, 9991 flow [2023-01-28 10:04:07,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 10:04:07,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:04:07,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:04:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 10:04:07,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:04:07,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:04:07,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2008387131, now seen corresponding path program 1 times [2023-01-28 10:04:07,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:04:07,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423236703] [2023-01-28 10:04:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:04:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:04:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:04:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:04:07,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:04:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423236703] [2023-01-28 10:04:07,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423236703] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:04:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358233613] [2023-01-28 10:04:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:04:07,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:04:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:04:07,959 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 10:04:07,960 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 10:04:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:04:08,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 10:04:08,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:04:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:04:08,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:04:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:04:08,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358233613] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:04:08,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:04:08,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 24 [2023-01-28 10:04:08,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520130320] [2023-01-28 10:04:08,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:04:08,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 10:04:08,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:04:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 10:04:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2023-01-28 10:04:08,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 461 [2023-01-28 10:04:08,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 666 transitions, 9991 flow. Second operand has 25 states, 25 states have (on average 189.48) internal successors, (4737), 25 states have internal predecessors, (4737), 0 states have call successors, (0), 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 10:04:08,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:04:08,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 461 [2023-01-28 10:04:08,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:05:25,631 INFO L130 PetriNetUnfolder]: 343190/469912 cut-off events. [2023-01-28 10:05:25,632 INFO L131 PetriNetUnfolder]: For 3793495/3793495 co-relation queries the response was YES. [2023-01-28 10:05:29,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154400 conditions, 469912 events. 343190/469912 cut-off events. For 3793495/3793495 co-relation queries the response was YES. Maximal size of possible extension queue 13988. Compared 3572481 event pairs, 43982 based on Foata normal form. 3378/473290 useless extension candidates. Maximal degree in co-relation 2154338. Up to 109290 conditions per place. [2023-01-28 10:05:31,379 INFO L137 encePairwiseOnDemand]: 449/461 looper letters, 2390 selfloop transitions, 2911 changer transitions 143/5444 dead transitions. [2023-01-28 10:05:31,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 5444 transitions, 85597 flow [2023-01-28 10:05:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-01-28 10:05:31,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-01-28 10:05:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 16319 transitions. [2023-01-28 10:05:31,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43169673562245386 [2023-01-28 10:05:31,389 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 16319 transitions. [2023-01-28 10:05:31,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 16319 transitions. [2023-01-28 10:05:31,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:05:31,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 16319 transitions. [2023-01-28 10:05:31,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 199.0121951219512) internal successors, (16319), 82 states have internal predecessors, (16319), 0 states have call successors, (0), 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 10:05:31,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 461.0) internal successors, (38263), 83 states have internal predecessors, (38263), 0 states have call successors, (0), 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 10:05:31,427 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 461.0) internal successors, (38263), 83 states have internal predecessors, (38263), 0 states have call successors, (0), 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 10:05:31,427 INFO L175 Difference]: Start difference. First operand has 200 places, 666 transitions, 9991 flow. Second operand 82 states and 16319 transitions. [2023-01-28 10:05:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 5444 transitions, 85597 flow