/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:59:36,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:59:36,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:59:36,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:59:36,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:59:36,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:59:36,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:59:36,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:59:36,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:59:36,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:59:36,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:59:36,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:59:36,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:59:36,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:59:36,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:59:36,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:59:36,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:59:36,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:59:36,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:59:36,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:59:36,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:59:36,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:59:36,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:59:36,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:59:36,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 21:59:36,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:59:36,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:59:36,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:59:36,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:59:36,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:59:36,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:59:36,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:59:36,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:59:36,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:59:36,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:59:36,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:59:36,185 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 [2023-01-27 21:59:36,208 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:59:36,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:59:36,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:59:36,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:59:36,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:59:36,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:59:36,210 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:59:36,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:59:36,210 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:59:36,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:59:36,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:59:36,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:59:36,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:59:36,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:59:36,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:59:36,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:59:36,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:59:36,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:59:36,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:59:36,398 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:59:36,398 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:59:36,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-01-27 21:59:37,407 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:59:37,558 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:59:37,559 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2023-01-27 21:59:37,563 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c59efbdc/45b6fe60975149d2be20f452a3d6757a/FLAG5ea3178ae [2023-01-27 21:59:37,984 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c59efbdc/45b6fe60975149d2be20f452a3d6757a [2023-01-27 21:59:37,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:59:37,987 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:59:37,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:59:37,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:59:37,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:59:37,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:59:37" (1/1) ... [2023-01-27 21:59:37,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a17dd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:37, skipping insertion in model container [2023-01-27 21:59:37,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:59:37" (1/1) ... [2023-01-27 21:59:37,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:59:38,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:59:38,146 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-more-buffer-series2.wvr.c[4232,4245] [2023-01-27 21:59:38,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:59:38,165 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:59:38,184 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2023-01-27 21:59:38,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:59:38,195 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:59:38,195 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:59:38,199 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:59:38,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38 WrapperNode [2023-01-27 21:59:38,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:59:38,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:59:38,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:59:38,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:59:38,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,233 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 354 [2023-01-27 21:59:38,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:59:38,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:59:38,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:59:38,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:59:38,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,261 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:59:38,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:59:38,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:59:38,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:59:38,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (1/1) ... [2023-01-27 21:59:38,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:59:38,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:38,290 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) [2023-01-27 21:59:38,295 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 [2023-01-27 21:59:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:59:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:59:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:59:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:59:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:59:38,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:59:38,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:59:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:59:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:59:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:59:38,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:59:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:59:38,315 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:59:38,386 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:59:38,387 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:59:38,805 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:59:38,968 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:59:38,968 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-27 21:59:38,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:59:38 BoogieIcfgContainer [2023-01-27 21:59:38,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:59:38,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:59:38,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:59:38,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:59:38,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:59:37" (1/3) ... [2023-01-27 21:59:38,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ce3be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:59:38, skipping insertion in model container [2023-01-27 21:59:38,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:59:38" (2/3) ... [2023-01-27 21:59:38,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ce3be1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:59:38, skipping insertion in model container [2023-01-27 21:59:38,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:59:38" (3/3) ... [2023-01-27 21:59:38,977 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2023-01-27 21:59:38,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:59:38,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:59:38,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:59:39,053 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 21:59:39,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 251 transitions, 534 flow [2023-01-27 21:59:39,170 INFO L130 PetriNetUnfolder]: 22/247 cut-off events. [2023-01-27 21:59:39,170 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:59:39,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 247 events. 22/247 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 132 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-01-27 21:59:39,176 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 251 transitions, 534 flow [2023-01-27 21:59:39,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 235 transitions, 494 flow [2023-01-27 21:59:39,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:59:39,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 235 transitions, 494 flow [2023-01-27 21:59:39,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 235 transitions, 494 flow [2023-01-27 21:59:39,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 235 transitions, 494 flow [2023-01-27 21:59:39,263 INFO L130 PetriNetUnfolder]: 22/235 cut-off events. [2023-01-27 21:59:39,263 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:59:39,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 235 events. 22/235 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 131 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 210. Up to 2 conditions per place. [2023-01-27 21:59:39,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 1824 [2023-01-27 21:59:46,393 INFO L134 LiptonReduction]: Checked pairs total: 2860 [2023-01-27 21:59:46,394 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-01-27 21:59:46,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:59:46,426 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;@1d3d4e88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:59:46,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 21:59:46,434 INFO L130 PetriNetUnfolder]: 7/36 cut-off events. [2023-01-27 21:59:46,434 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:59:46,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:46,435 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] [2023-01-27 21:59:46,435 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)] === [2023-01-27 21:59:46,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:46,439 INFO L85 PathProgramCache]: Analyzing trace with hash 570355702, now seen corresponding path program 1 times [2023-01-27 21:59:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:46,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569260150] [2023-01-27 21:59:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:59:46,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569260150] [2023-01-27 21:59:46,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569260150] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:46,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:46,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 21:59:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523208780] [2023-01-27 21:59:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:46,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:59:46,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:59:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:59:46,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 489 [2023-01-27 21:59:46,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:46,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:46,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 489 [2023-01-27 21:59:46,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:47,207 INFO L130 PetriNetUnfolder]: 1616/2218 cut-off events. [2023-01-27 21:59:47,208 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-01-27 21:59:47,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 2218 events. 1616/2218 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 8933 event pairs, 271 based on Foata normal form. 1/1347 useless extension candidates. Maximal degree in co-relation 3411. Up to 1413 conditions per place. [2023-01-27 21:59:47,221 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 45 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-01-27 21:59:47,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 247 flow [2023-01-27 21:59:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:59:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:59:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-01-27 21:59:47,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48602590320381733 [2023-01-27 21:59:47,236 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-01-27 21:59:47,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-01-27 21:59:47,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:47,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-01-27 21:59:47,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,251 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 98 flow. Second operand 3 states and 713 transitions. [2023-01-27 21:59:47,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 247 flow [2023-01-27 21:59:47,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:59:47,257 INFO L231 Difference]: Finished difference. Result has 38 places, 39 transitions, 101 flow [2023-01-27 21:59:47,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=39} [2023-01-27 21:59:47,261 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-01-27 21:59:47,261 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 39 transitions, 101 flow [2023-01-27 21:59:47,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:47,262 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] [2023-01-27 21:59:47,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:59:47,262 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)] === [2023-01-27 21:59:47,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:47,263 INFO L85 PathProgramCache]: Analyzing trace with hash -775864851, now seen corresponding path program 1 times [2023-01-27 21:59:47,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:47,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914315760] [2023-01-27 21:59:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:47,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:47,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:59:47,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914315760] [2023-01-27 21:59:47,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914315760] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:47,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:59:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998508663] [2023-01-27 21:59:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:47,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:59:47,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:59:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:59:47,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-27 21:59:47,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:47,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-27 21:59:47,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:47,628 INFO L130 PetriNetUnfolder]: 2188/2887 cut-off events. [2023-01-27 21:59:47,629 INFO L131 PetriNetUnfolder]: For 481/481 co-relation queries the response was YES. [2023-01-27 21:59:47,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6429 conditions, 2887 events. 2188/2887 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 11758 event pairs, 596 based on Foata normal form. 76/2329 useless extension candidates. Maximal degree in co-relation 2218. Up to 1820 conditions per place. [2023-01-27 21:59:47,638 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 55 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-01-27 21:59:47,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 272 flow [2023-01-27 21:59:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:59:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:59:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-01-27 21:59:47,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4812542603953647 [2023-01-27 21:59:47,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-01-27 21:59:47,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-01-27 21:59:47,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:47,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-01-27 21:59:47,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,644 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 101 flow. Second operand 3 states and 706 transitions. [2023-01-27 21:59:47,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 272 flow [2023-01-27 21:59:47,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:47,646 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 112 flow [2023-01-27 21:59:47,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=3, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-01-27 21:59:47,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-01-27 21:59:47,647 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 112 flow [2023-01-27 21:59:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:47,648 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] [2023-01-27 21:59:47,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:59:47,648 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)] === [2023-01-27 21:59:47,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2101749660, now seen corresponding path program 1 times [2023-01-27 21:59:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:47,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390652059] [2023-01-27 21:59:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:59:47,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:47,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390652059] [2023-01-27 21:59:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390652059] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:47,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:47,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:59:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318645722] [2023-01-27 21:59:47,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:47,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:59:47,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:59:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:59:47,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-27 21:59:47,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:47,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-27 21:59:47,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:47,977 INFO L130 PetriNetUnfolder]: 2418/3343 cut-off events. [2023-01-27 21:59:47,978 INFO L131 PetriNetUnfolder]: For 1259/1259 co-relation queries the response was YES. [2023-01-27 21:59:47,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 3343 events. 2418/3343 cut-off events. For 1259/1259 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15462 event pairs, 747 based on Foata normal form. 100/3124 useless extension candidates. Maximal degree in co-relation 3824. Up to 2227 conditions per place. [2023-01-27 21:59:47,989 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 59 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-01-27 21:59:47,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 306 flow [2023-01-27 21:59:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:59:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:59:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-01-27 21:59:47,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48261758691206547 [2023-01-27 21:59:47,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-01-27 21:59:47,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-01-27 21:59:47,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:47,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-01-27 21:59:47,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:47,995 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 112 flow. Second operand 3 states and 708 transitions. [2023-01-27 21:59:47,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 306 flow [2023-01-27 21:59:47,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:47,998 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 124 flow [2023-01-27 21:59:47,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-01-27 21:59:47,999 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2023-01-27 21:59:48,001 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 124 flow [2023-01-27 21:59:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:48,002 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] [2023-01-27 21:59:48,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:59:48,002 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)] === [2023-01-27 21:59:48,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash 225964666, now seen corresponding path program 1 times [2023-01-27 21:59:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:48,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005243101] [2023-01-27 21:59:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:48,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:48,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005243101] [2023-01-27 21:59:48,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005243101] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:48,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:48,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:59:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526261186] [2023-01-27 21:59:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:48,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:59:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:59:48,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:59:48,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-27 21:59:48,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:48,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-27 21:59:48,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:48,379 INFO L130 PetriNetUnfolder]: 2089/3081 cut-off events. [2023-01-27 21:59:48,379 INFO L131 PetriNetUnfolder]: For 1721/1721 co-relation queries the response was YES. [2023-01-27 21:59:48,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 3081 events. 2089/3081 cut-off events. For 1721/1721 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15920 event pairs, 1506 based on Foata normal form. 74/3085 useless extension candidates. Maximal degree in co-relation 3812. Up to 2239 conditions per place. [2023-01-27 21:59:48,390 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 62 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2023-01-27 21:59:48,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 71 transitions, 336 flow [2023-01-27 21:59:48,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:59:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:59:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 808 transitions. [2023-01-27 21:59:48,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130879345603272 [2023-01-27 21:59:48,392 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 808 transitions. [2023-01-27 21:59:48,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 808 transitions. [2023-01-27 21:59:48,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:48,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 808 transitions. [2023-01-27 21:59:48,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,396 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,396 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 124 flow. Second operand 4 states and 808 transitions. [2023-01-27 21:59:48,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 71 transitions, 336 flow [2023-01-27 21:59:48,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:48,398 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 142 flow [2023-01-27 21:59:48,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-01-27 21:59:48,399 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2023-01-27 21:59:48,399 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 142 flow [2023-01-27 21:59:48,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:48,399 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] [2023-01-27 21:59:48,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:59:48,399 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)] === [2023-01-27 21:59:48,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:48,400 INFO L85 PathProgramCache]: Analyzing trace with hash -542120705, now seen corresponding path program 1 times [2023-01-27 21:59:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:48,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238510486] [2023-01-27 21:59:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:48,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:48,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238510486] [2023-01-27 21:59:48,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238510486] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:48,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:48,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 21:59:48,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155444035] [2023-01-27 21:59:48,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:48,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:59:48,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:48,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:59:48,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:59:48,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-27 21:59:48,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:48,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-27 21:59:48,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:48,882 INFO L130 PetriNetUnfolder]: 3315/5119 cut-off events. [2023-01-27 21:59:48,882 INFO L131 PetriNetUnfolder]: For 2789/2789 co-relation queries the response was YES. [2023-01-27 21:59:48,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 5119 events. 3315/5119 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 31151 event pairs, 2550 based on Foata normal form. 280/5300 useless extension candidates. Maximal degree in co-relation 9501. Up to 2950 conditions per place. [2023-01-27 21:59:48,899 INFO L137 encePairwiseOnDemand]: 484/489 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-01-27 21:59:48,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 480 flow [2023-01-27 21:59:48,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:59:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:59:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1018 transitions. [2023-01-27 21:59:48,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416359918200409 [2023-01-27 21:59:48,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1018 transitions. [2023-01-27 21:59:48,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1018 transitions. [2023-01-27 21:59:48,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:48,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1018 transitions. [2023-01-27 21:59:48,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 489.0) internal successors, (2934), 6 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,907 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 142 flow. Second operand 5 states and 1018 transitions. [2023-01-27 21:59:48,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 480 flow [2023-01-27 21:59:48,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:48,909 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 171 flow [2023-01-27 21:59:48,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-01-27 21:59:48,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-01-27 21:59:48,910 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 171 flow [2023-01-27 21:59:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:48,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:48,910 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] [2023-01-27 21:59:48,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:59:48,911 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)] === [2023-01-27 21:59:48,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1581329091, now seen corresponding path program 1 times [2023-01-27 21:59:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:48,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751664030] [2023-01-27 21:59:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:59:49,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:49,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751664030] [2023-01-27 21:59:49,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751664030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:49,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:49,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951217120] [2023-01-27 21:59:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:49,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:49,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-27 21:59:49,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:49,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:49,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-27 21:59:49,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:50,401 INFO L130 PetriNetUnfolder]: 13213/18670 cut-off events. [2023-01-27 21:59:50,401 INFO L131 PetriNetUnfolder]: For 7229/7229 co-relation queries the response was YES. [2023-01-27 21:59:50,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43154 conditions, 18670 events. 13213/18670 cut-off events. For 7229/7229 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 100772 event pairs, 5320 based on Foata normal form. 248/18916 useless extension candidates. Maximal degree in co-relation 30016. Up to 6719 conditions per place. [2023-01-27 21:59:50,446 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 114 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2023-01-27 21:59:50,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 639 flow [2023-01-27 21:59:50,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1159 transitions. [2023-01-27 21:59:50,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950238582140423 [2023-01-27 21:59:50,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1159 transitions. [2023-01-27 21:59:50,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1159 transitions. [2023-01-27 21:59:50,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:50,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1159 transitions. [2023-01-27 21:59:50,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 193.16666666666666) internal successors, (1159), 6 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:50,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:50,454 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:50,455 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 171 flow. Second operand 6 states and 1159 transitions. [2023-01-27 21:59:50,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 639 flow [2023-01-27 21:59:50,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 634 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:50,460 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 203 flow [2023-01-27 21:59:50,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-01-27 21:59:50,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-01-27 21:59:50,462 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 203 flow [2023-01-27 21:59:50,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:50,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:50,462 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] [2023-01-27 21:59:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:59:50,462 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)] === [2023-01-27 21:59:50,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash -547964448, now seen corresponding path program 1 times [2023-01-27 21:59:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974451541] [2023-01-27 21:59:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:59:50,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:50,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974451541] [2023-01-27 21:59:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974451541] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:50,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:50,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081706610] [2023-01-27 21:59:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:50,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:50,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:50,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-27 21:59:50,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 203 flow. Second operand has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:50,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:50,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-27 21:59:50,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:51,812 INFO L130 PetriNetUnfolder]: 11061/15744 cut-off events. [2023-01-27 21:59:51,812 INFO L131 PetriNetUnfolder]: For 7142/7142 co-relation queries the response was YES. [2023-01-27 21:59:51,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37303 conditions, 15744 events. 11061/15744 cut-off events. For 7142/7142 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 84474 event pairs, 5298 based on Foata normal form. 192/15936 useless extension candidates. Maximal degree in co-relation 26486. Up to 7175 conditions per place. [2023-01-27 21:59:51,850 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 66 selfloop transitions, 6 changer transitions 37/109 dead transitions. [2023-01-27 21:59:51,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 581 flow [2023-01-27 21:59:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:51,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1150 transitions. [2023-01-27 21:59:51,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39195637355146556 [2023-01-27 21:59:51,853 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1150 transitions. [2023-01-27 21:59:51,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1150 transitions. [2023-01-27 21:59:51,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:51,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1150 transitions. [2023-01-27 21:59:51,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.66666666666666) internal successors, (1150), 6 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:51,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:51,859 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:51,859 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 203 flow. Second operand 6 states and 1150 transitions. [2023-01-27 21:59:51,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 581 flow [2023-01-27 21:59:51,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 109 transitions, 571 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 21:59:51,866 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 198 flow [2023-01-27 21:59:51,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-01-27 21:59:51,867 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-01-27 21:59:51,867 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 198 flow [2023-01-27 21:59:51,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.33333333333334) internal successors, (1082), 6 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:51,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:51,867 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] [2023-01-27 21:59:51,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 21:59:51,867 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)] === [2023-01-27 21:59:51,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:51,868 INFO L85 PathProgramCache]: Analyzing trace with hash -722686443, now seen corresponding path program 1 times [2023-01-27 21:59:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987524564] [2023-01-27 21:59:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:59:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:52,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987524564] [2023-01-27 21:59:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987524564] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884025302] [2023-01-27 21:59:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:52,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:52,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:52,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:52,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-27 21:59:52,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:52,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:52,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-27 21:59:52,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:52,761 INFO L130 PetriNetUnfolder]: 6113/8458 cut-off events. [2023-01-27 21:59:52,761 INFO L131 PetriNetUnfolder]: For 5467/5467 co-relation queries the response was YES. [2023-01-27 21:59:52,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21650 conditions, 8458 events. 6113/8458 cut-off events. For 5467/5467 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 38808 event pairs, 1120 based on Foata normal form. 496/8954 useless extension candidates. Maximal degree in co-relation 17572. Up to 5246 conditions per place. [2023-01-27 21:59:52,781 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 75 selfloop transitions, 7 changer transitions 1/83 dead transitions. [2023-01-27 21:59:52,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 482 flow [2023-01-27 21:59:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1122 transitions. [2023-01-27 21:59:52,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824130879345603 [2023-01-27 21:59:52,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1122 transitions. [2023-01-27 21:59:52,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1122 transitions. [2023-01-27 21:59:52,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:52,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1122 transitions. [2023-01-27 21:59:52,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:52,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:52,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:52,790 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 198 flow. Second operand 6 states and 1122 transitions. [2023-01-27 21:59:52,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 482 flow [2023-01-27 21:59:52,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 456 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-27 21:59:52,793 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 194 flow [2023-01-27 21:59:52,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-01-27 21:59:52,795 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-01-27 21:59:52,795 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 194 flow [2023-01-27 21:59:52,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:52,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:52,796 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] [2023-01-27 21:59:52,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 21:59:52,796 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)] === [2023-01-27 21:59:52,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1709483178, now seen corresponding path program 1 times [2023-01-27 21:59:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:52,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115697982] [2023-01-27 21:59:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:52,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:59:53,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115697982] [2023-01-27 21:59:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115697982] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:53,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:53,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994488118] [2023-01-27 21:59:53,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:53,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:53,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:53,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-27 21:59:53,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:53,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:53,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-27 21:59:53,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:53,523 INFO L130 PetriNetUnfolder]: 4654/6363 cut-off events. [2023-01-27 21:59:53,524 INFO L131 PetriNetUnfolder]: For 4918/4918 co-relation queries the response was YES. [2023-01-27 21:59:53,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16805 conditions, 6363 events. 4654/6363 cut-off events. For 4918/4918 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 26901 event pairs, 1274 based on Foata normal form. 432/6795 useless extension candidates. Maximal degree in co-relation 16776. Up to 2526 conditions per place. [2023-01-27 21:59:53,539 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 89 selfloop transitions, 7 changer transitions 12/108 dead transitions. [2023-01-27 21:59:53,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 625 flow [2023-01-27 21:59:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:59:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:59:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1293 transitions. [2023-01-27 21:59:53,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37773882559158634 [2023-01-27 21:59:53,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1293 transitions. [2023-01-27 21:59:53,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1293 transitions. [2023-01-27 21:59:53,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:53,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1293 transitions. [2023-01-27 21:59:53,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.71428571428572) internal successors, (1293), 7 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:53,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:53,548 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:53,548 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 194 flow. Second operand 7 states and 1293 transitions. [2023-01-27 21:59:53,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 625 flow [2023-01-27 21:59:53,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 108 transitions, 580 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-01-27 21:59:53,551 INFO L231 Difference]: Finished difference. Result has 61 places, 47 transitions, 193 flow [2023-01-27 21:59:53,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2023-01-27 21:59:53,551 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-01-27 21:59:53,551 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 193 flow [2023-01-27 21:59:53,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.5) internal successors, (1059), 6 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:53,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:53,552 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] [2023-01-27 21:59:53,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:59:53,552 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)] === [2023-01-27 21:59:53,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash 390605791, now seen corresponding path program 1 times [2023-01-27 21:59:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970959873] [2023-01-27 21:59:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:53,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:53,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 21:59:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970959873] [2023-01-27 21:59:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970959873] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247419796] [2023-01-27 21:59:53,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:53,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:53,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:53,692 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) [2023-01-27 21:59:53,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 21:59:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:53,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 21:59:53,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:59:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:59:53,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:59:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:59:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247419796] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:54,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 21:59:54,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 9 [2023-01-27 21:59:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087503591] [2023-01-27 21:59:54,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:54,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:59:54,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 489 [2023-01-27 21:59:54,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:54,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:54,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 489 [2023-01-27 21:59:54,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:54,496 INFO L130 PetriNetUnfolder]: 3650/4900 cut-off events. [2023-01-27 21:59:54,497 INFO L131 PetriNetUnfolder]: For 4069/4269 co-relation queries the response was YES. [2023-01-27 21:59:54,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13923 conditions, 4900 events. 3650/4900 cut-off events. For 4069/4269 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 20113 event pairs, 743 based on Foata normal form. 326/5224 useless extension candidates. Maximal degree in co-relation 13893. Up to 1568 conditions per place. [2023-01-27 21:59:54,516 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 94 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2023-01-27 21:59:54,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 109 transitions, 607 flow [2023-01-27 21:59:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 21:59:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 21:59:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1334 transitions. [2023-01-27 21:59:54,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4546693933197001 [2023-01-27 21:59:54,519 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1334 transitions. [2023-01-27 21:59:54,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1334 transitions. [2023-01-27 21:59:54,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:54,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1334 transitions. [2023-01-27 21:59:54,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:54,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:54,525 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:54,525 INFO L175 Difference]: Start difference. First operand has 61 places, 47 transitions, 193 flow. Second operand 6 states and 1334 transitions. [2023-01-27 21:59:54,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 109 transitions, 607 flow [2023-01-27 21:59:54,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 584 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-27 21:59:54,532 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 262 flow [2023-01-27 21:59:54,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-01-27 21:59:54,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-01-27 21:59:54,533 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 262 flow [2023-01-27 21:59:54,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:54,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:54,534 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] [2023-01-27 21:59:54,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 21:59:54,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-27 21:59:54,751 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)] === [2023-01-27 21:59:54,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:54,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1897050288, now seen corresponding path program 1 times [2023-01-27 21:59:54,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:54,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826492104] [2023-01-27 21:59:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:54,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:59:54,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826492104] [2023-01-27 21:59:54,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826492104] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112175774] [2023-01-27 21:59:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:54,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:54,966 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) [2023-01-27 21:59:54,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 21:59:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:55,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 21:59:55,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:59:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:59:55,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 21:59:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112175774] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:55,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 21:59:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2023-01-27 21:59:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33541206] [2023-01-27 21:59:55,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:55,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:55,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:55,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:55,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:59:55,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 489 [2023-01-27 21:59:55,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:55,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:55,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 489 [2023-01-27 21:59:55,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:56,247 INFO L130 PetriNetUnfolder]: 8256/11047 cut-off events. [2023-01-27 21:59:56,247 INFO L131 PetriNetUnfolder]: For 18797/18997 co-relation queries the response was YES. [2023-01-27 21:59:56,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36185 conditions, 11047 events. 8256/11047 cut-off events. For 18797/18997 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 52107 event pairs, 1103 based on Foata normal form. 582/11627 useless extension candidates. Maximal degree in co-relation 36155. Up to 3770 conditions per place. [2023-01-27 21:59:56,297 INFO L137 encePairwiseOnDemand]: 480/489 looper letters, 149 selfloop transitions, 35 changer transitions 0/186 dead transitions. [2023-01-27 21:59:56,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 186 transitions, 1362 flow [2023-01-27 21:59:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 21:59:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 21:59:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1780 transitions. [2023-01-27 21:59:56,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550102249488753 [2023-01-27 21:59:56,302 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1780 transitions. [2023-01-27 21:59:56,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1780 transitions. [2023-01-27 21:59:56,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:56,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1780 transitions. [2023-01-27 21:59:56,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 222.5) internal successors, (1780), 8 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:56,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 489.0) internal successors, (4401), 9 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:56,309 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 489.0) internal successors, (4401), 9 states have internal predecessors, (4401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:56,309 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 262 flow. Second operand 8 states and 1780 transitions. [2023-01-27 21:59:56,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 186 transitions, 1362 flow [2023-01-27 21:59:56,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 186 transitions, 1332 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-27 21:59:56,346 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 641 flow [2023-01-27 21:59:56,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-01-27 21:59:56,346 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-01-27 21:59:56,347 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 641 flow [2023-01-27 21:59:56,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.5) internal successors, (1275), 6 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:56,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:56,348 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] [2023-01-27 21:59:56,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 21:59:56,552 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,SelfDestructingSolverStorable10 [2023-01-27 21:59:56,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:56,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1051748402, now seen corresponding path program 2 times [2023-01-27 21:59:56,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759869741] [2023-01-27 21:59:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-27 21:59:56,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759869741] [2023-01-27 21:59:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759869741] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:59:56,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:59:56,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:59:56,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469706726] [2023-01-27 21:59:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:59:56,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:59:56,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:59:56,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:59:56,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:59:56,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-27 21:59:56,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 641 flow. Second operand has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:56,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:59:56,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-27 21:59:56,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:59:57,921 INFO L130 PetriNetUnfolder]: 10548/14117 cut-off events. [2023-01-27 21:59:57,921 INFO L131 PetriNetUnfolder]: For 53594/53594 co-relation queries the response was YES. [2023-01-27 21:59:57,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59839 conditions, 14117 events. 10548/14117 cut-off events. For 53594/53594 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 64251 event pairs, 2245 based on Foata normal form. 368/14484 useless extension candidates. Maximal degree in co-relation 59803. Up to 10817 conditions per place. [2023-01-27 21:59:57,982 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 160 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2023-01-27 21:59:57,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 168 transitions, 1603 flow [2023-01-27 21:59:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:59:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:59:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1283 transitions. [2023-01-27 21:59:57,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3748174116272276 [2023-01-27 21:59:57,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1283 transitions. [2023-01-27 21:59:57,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1283 transitions. [2023-01-27 21:59:57,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:59:57,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1283 transitions. [2023-01-27 21:59:57,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.28571428571428) internal successors, (1283), 7 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:57,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:57,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:57,991 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 641 flow. Second operand 7 states and 1283 transitions. [2023-01-27 21:59:57,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 168 transitions, 1603 flow [2023-01-27 21:59:58,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 168 transitions, 1598 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-27 21:59:58,049 INFO L231 Difference]: Finished difference. Result has 79 places, 89 transitions, 686 flow [2023-01-27 21:59:58,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=686, PETRI_PLACES=79, PETRI_TRANSITIONS=89} [2023-01-27 21:59:58,050 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2023-01-27 21:59:58,050 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 89 transitions, 686 flow [2023-01-27 21:59:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.83333333333334) internal successors, (1061), 6 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:59:58,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:59:58,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:59:58,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 21:59:58,050 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:59:58,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:59:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1917592064, now seen corresponding path program 1 times [2023-01-27 21:59:58,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:59:58,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791722802] [2023-01-27 21:59:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:59:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:59:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:59:59,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:59:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791722802] [2023-01-27 21:59:59,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791722802] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:59:59,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343475170] [2023-01-27 21:59:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:59:59,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:59:59,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:59:59,904 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) [2023-01-27 21:59:59,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 22:00:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 22:00:00,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 101 conjunts are in the unsatisfiable core [2023-01-27 22:00:00,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 22:00:00,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,144 INFO L321 Elim1Store]: treesize reduction 88, result has 29.6 percent of original size [2023-01-27 22:00:00,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 54 [2023-01-27 22:00:00,253 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 [2023-01-27 22:00:00,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,371 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-01-27 22:00:00,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2023-01-27 22:00:00,468 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 [2023-01-27 22:00:00,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:00,619 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 22:00:00,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2023-01-27 22:00:00,763 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 [2023-01-27 22:00:00,881 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 [2023-01-27 22:00:01,116 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 [2023-01-27 22:00:01,345 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 [2023-01-27 22:00:01,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:01,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:00:01,679 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 22:00:01,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2023-01-27 22:00:02,184 INFO L321 Elim1Store]: treesize reduction 118, result has 26.7 percent of original size [2023-01-27 22:00:02,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 56 [2023-01-27 22:00:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 22:00:02,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 22:00:10,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:00:10,313 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 236 treesize of output 176 [2023-01-27 22:00:10,962 INFO L321 Elim1Store]: treesize reduction 76, result has 67.9 percent of original size [2023-01-27 22:00:10,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 137744367586 treesize of output 136553128066 [2023-01-27 22:03:45,085 WARN L222 SmtUtils]: Spent 3.57m on a formula simplification. DAG size of input: 7292 DAG size of output: 1581 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:03:49,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:03:49,197 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:03:49,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 241954 treesize of output 228262 [2023-01-27 22:03:53,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:03:53,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:03:53,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 228130 treesize of output 226534 [2023-01-27 22:03:58,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:03:58,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202988 treesize of output 158014 [2023-01-27 22:04:02,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:04:02,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:04:02,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 181346 treesize of output 178022 [2023-01-27 22:04:07,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:04:07,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:04:07,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 177890 treesize of output 171110 [2023-01-27 22:04:12,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 22:04:12,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 22:04:12,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 170978 treesize of output 143462 [2023-01-27 22:04:17,678 WARN L222 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 1727 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:04:17,679 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-27 22:10:57,446 WARN L222 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 1389 DAG size of output: 1500 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-27 22:13:07,959 WARN L222 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 1337 DAG size of output: 1504 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-27 22:13:50,110 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 22:13:50,112 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 22:13:50,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 22:13:50,124 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:13:50,129 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 22:13:50,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 22:13:50,313 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 29ms.. [2023-01-27 22:13:50,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-27 22:13:50,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 22:13:50,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 22:13:50,314 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-27 22:13:50,314 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 22:13:50,316 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 22:13:50,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 22:13:50,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:13:50 BasicIcfg [2023-01-27 22:13:50,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 22:13:50,318 INFO L158 Benchmark]: Toolchain (without parser) took 852331.45ms. Allocated memory was 566.2MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 526.1MB in the beginning and 2.0GB in the end (delta: -1.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-01-27 22:13:50,318 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 371.2MB. Free memory is still 319.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 22:13:50,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.72ms. Allocated memory is still 566.2MB. Free memory was 526.1MB in the beginning and 513.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 22:13:50,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.53ms. Allocated memory is still 566.2MB. Free memory was 513.1MB in the beginning and 510.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:13:50,319 INFO L158 Benchmark]: Boogie Preprocessor took 30.71ms. Allocated memory is still 566.2MB. Free memory was 510.3MB in the beginning and 508.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 22:13:50,319 INFO L158 Benchmark]: RCFGBuilder took 705.36ms. Allocated memory is still 566.2MB. Free memory was 508.2MB in the beginning and 525.9MB in the end (delta: -17.8MB). Peak memory consumption was 59.6MB. Max. memory is 16.0GB. [2023-01-27 22:13:50,319 INFO L158 Benchmark]: TraceAbstraction took 851344.90ms. Allocated memory was 566.2MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 525.9MB in the beginning and 2.0GB in the end (delta: -1.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. [2023-01-27 22:13:50,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 371.2MB. Free memory is still 319.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 211.72ms. Allocated memory is still 566.2MB. Free memory was 526.1MB in the beginning and 513.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.53ms. Allocated memory is still 566.2MB. Free memory was 513.1MB in the beginning and 510.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.71ms. Allocated memory is still 566.2MB. Free memory was 510.3MB in the beginning and 508.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 705.36ms. Allocated memory is still 566.2MB. Free memory was 508.2MB in the beginning and 525.9MB in the end (delta: -17.8MB). Peak memory consumption was 59.6MB. Max. memory is 16.0GB. * TraceAbstraction took 851344.90ms. Allocated memory was 566.2MB in the beginning and 2.5GB in the end (delta: 1.9GB). Free memory was 525.9MB in the beginning and 2.0GB in the end (delta: -1.4GB). Peak memory consumption was 1.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 226 PlacesBefore, 43 PlacesAfterwards, 235 TransitionsBefore, 37 TransitionsAfterwards, 1824 CoEnabledTransitionPairs, 7 FixpointIterations, 153 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 8 ConcurrentYvCompositions, 15 ChoiceCompositions, 238 TotalNumberOfCompositions, 2860 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2344, independent: 2292, independent conditional: 0, independent unconditional: 2292, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 952, independent: 935, independent conditional: 0, independent unconditional: 935, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2344, independent: 1357, independent conditional: 0, independent unconditional: 1357, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 952, unknown conditional: 0, unknown unconditional: 952] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 128, Positive conditional cache size: 0, Positive unconditional cache size: 128, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 29ms.. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 29ms.. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 29ms.. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 29ms.. - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 38 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 29ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 262 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 851.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 662 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 662 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1505 IncrementalHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 22 mSDtfsCounter, 1505 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=686occurred in iteration=12, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 475 ConstructedInterpolants, 0 QuantifiedInterpolants, 1530 SizeOfPredicates, 17 NumberOfNonLiveVariables, 834 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 15 InterpolantComputations, 12 PerfectInterpolantSequences, 53/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown