/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:50:17,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:50:17,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:50:17,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:50:17,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:50:17,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:50:17,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:50:17,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:50:17,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:50:17,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:50:17,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:50:17,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:50:17,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:50:17,134 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:50:17,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:50:17,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:50:17,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:50:17,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 00:50:17,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 00:50:17,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 00:50:17,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 00:50:17,184 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:50:17,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:50:17,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:50:17,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:50:17,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:50:17,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:50:17,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:50:17,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:50:17,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:50:17,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:17,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:50:17,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:50:17,188 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:50:17,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:50:17,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:50:17,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:50:17,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:50:17,189 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:50:17,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:50:17,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:50:17,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:50:17,391 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:50:17,392 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:50:17,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-01-28 00:50:18,480 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:50:18,742 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:50:18,742 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-01-28 00:50:18,757 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ada9d8b9/07a6d91467e14337a3a4c7ce8193652e/FLAGbef100953 [2023-01-28 00:50:18,768 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ada9d8b9/07a6d91467e14337a3a4c7ce8193652e [2023-01-28 00:50:18,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:50:18,771 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:50:18,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:18,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:50:18,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:50:18,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:18" (1/1) ... [2023-01-28 00:50:18,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9c2c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:18, skipping insertion in model container [2023-01-28 00:50:18,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:18" (1/1) ... [2023-01-28 00:50:18,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:50:18,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:50:19,318 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-01-28 00:50:19,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:19,365 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:50:19,429 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-01-28 00:50:19,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:19,540 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:50:19,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19 WrapperNode [2023-01-28 00:50:19,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:19,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:19,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:50:19,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:50:19,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,601 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2023-01-28 00:50:19,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:19,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:50:19,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:50:19,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:50:19,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,645 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:50:19,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:50:19,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:50:19,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:50:19,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:19,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:50:19,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 00:50:19,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 00:50:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:50:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 00:50:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 00:50:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:50:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 00:50:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:50:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:50:19,727 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-28 00:50:19,727 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-28 00:50:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:50:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:50:19,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:50:19,730 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:50:20,077 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:50:20,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:50:20,276 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:50:20,282 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:50:20,282 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:50:20,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:20 BoogieIcfgContainer [2023-01-28 00:50:20,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:50:20,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:50:20,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:50:20,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:50:20,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:50:18" (1/3) ... [2023-01-28 00:50:20,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cabe6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:20, skipping insertion in model container [2023-01-28 00:50:20,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (2/3) ... [2023-01-28 00:50:20,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cabe6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:20, skipping insertion in model container [2023-01-28 00:50:20,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:20" (3/3) ... [2023-01-28 00:50:20,290 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-01-28 00:50:20,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:50:20,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-01-28 00:50:20,304 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:50:20,383 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 00:50:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 366 flow [2023-01-28 00:50:20,511 INFO L130 PetriNetUnfolder]: 10/213 cut-off events. [2023-01-28 00:50:20,512 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:20,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 213 events. 10/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 373 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-01-28 00:50:20,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 366 flow [2023-01-28 00:50:20,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 163 transitions, 338 flow [2023-01-28 00:50:20,526 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:50:20,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 163 transitions, 338 flow [2023-01-28 00:50:20,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 163 transitions, 338 flow [2023-01-28 00:50:20,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 338 flow [2023-01-28 00:50:20,597 INFO L130 PetriNetUnfolder]: 7/194 cut-off events. [2023-01-28 00:50:20,597 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:20,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 7/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 312 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-01-28 00:50:20,602 INFO L119 LiptonReduction]: Number of co-enabled transitions 2604 [2023-01-28 00:50:30,452 INFO L134 LiptonReduction]: Checked pairs total: 5770 [2023-01-28 00:50:30,452 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-01-28 00:50:30,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:50:30,471 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;@4e408719, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:50:30,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-28 00:50:30,473 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-28 00:50:30,473 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:50:30,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:30,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-28 00:50:30,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:30,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:30,486 INFO L85 PathProgramCache]: Analyzing trace with hash 610, now seen corresponding path program 1 times [2023-01-28 00:50:30,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:30,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846939493] [2023-01-28 00:50:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:30,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:30,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:30,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846939493] [2023-01-28 00:50:30,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846939493] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:30,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:30,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-28 00:50:30,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134287176] [2023-01-28 00:50:30,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:30,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 00:50:30,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 00:50:30,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 00:50:30,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 352 [2023-01-28 00:50:30,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:30,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:30,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 352 [2023-01-28 00:50:30,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:30,917 INFO L130 PetriNetUnfolder]: 217/420 cut-off events. [2023-01-28 00:50:30,917 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-01-28 00:50:30,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830 conditions, 420 events. 217/420 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2009 event pairs, 216 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 739. Up to 391 conditions per place. [2023-01-28 00:50:30,924 INFO L137 encePairwiseOnDemand]: 349/352 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-01-28 00:50:30,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-01-28 00:50:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 00:50:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 00:50:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 346 transitions. [2023-01-28 00:50:30,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914772727272727 [2023-01-28 00:50:30,944 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 346 transitions. [2023-01-28 00:50:30,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 346 transitions. [2023-01-28 00:50:30,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:30,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 346 transitions. [2023-01-28 00:50:30,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:30,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:30,958 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:30,960 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 346 transitions. [2023-01-28 00:50:30,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-01-28 00:50:30,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:30,965 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-01-28 00:50:30,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-01-28 00:50:30,970 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-01-28 00:50:30,970 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-01-28 00:50:30,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 159.5) internal successors, (319), 2 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:30,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:30,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-28 00:50:30,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:50:30,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:30,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 18718605, now seen corresponding path program 1 times [2023-01-28 00:50:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624550392] [2023-01-28 00:50:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:31,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:31,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624550392] [2023-01-28 00:50:31,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624550392] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:31,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:31,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:31,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733297047] [2023-01-28 00:50:31,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:31,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:31,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 00:50:31,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:31,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 00:50:31,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:31,496 INFO L130 PetriNetUnfolder]: 639/1091 cut-off events. [2023-01-28 00:50:31,496 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 00:50:31,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 1091 events. 639/1091 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5167 event pairs, 306 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2189. Up to 767 conditions per place. [2023-01-28 00:50:31,501 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-01-28 00:50:31,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 172 flow [2023-01-28 00:50:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-01-28 00:50:31,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2023-01-28 00:50:31,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-01-28 00:50:31,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-01-28 00:50:31,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:31,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-01-28 00:50:31,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,508 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 424 transitions. [2023-01-28 00:50:31,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 172 flow [2023-01-28 00:50:31,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:50:31,510 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-01-28 00:50:31,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-01-28 00:50:31,510 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-28 00:50:31,511 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-01-28 00:50:31,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:31,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 00:50:31,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:50:31,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:31,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash 580276061, now seen corresponding path program 1 times [2023-01-28 00:50:31,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:31,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701988633] [2023-01-28 00:50:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:31,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:31,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:31,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:31,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701988633] [2023-01-28 00:50:31,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701988633] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:31,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:31,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:31,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798975598] [2023-01-28 00:50:31,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:31,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:31,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:31,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:31,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 352 [2023-01-28 00:50:31,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:31,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 352 [2023-01-28 00:50:31,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:31,891 INFO L130 PetriNetUnfolder]: 755/1298 cut-off events. [2023-01-28 00:50:31,891 INFO L131 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2023-01-28 00:50:31,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1298 events. 755/1298 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6462 event pairs, 422 based on Foata normal form. 37/1333 useless extension candidates. Maximal degree in co-relation 3354. Up to 992 conditions per place. [2023-01-28 00:50:31,898 INFO L137 encePairwiseOnDemand]: 345/352 looper letters, 39 selfloop transitions, 9 changer transitions 2/50 dead transitions. [2023-01-28 00:50:31,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 274 flow [2023-01-28 00:50:31,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:31,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-01-28 00:50:31,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2023-01-28 00:50:31,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-01-28 00:50:31,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-01-28 00:50:31,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:31,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-01-28 00:50:31,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,906 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 423 transitions. [2023-01-28 00:50:31,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 274 flow [2023-01-28 00:50:31,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:50:31,910 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-01-28 00:50:31,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=36, PETRI_TRANSITIONS=40} [2023-01-28 00:50:31,911 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-28 00:50:31,911 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-01-28 00:50:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:31,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:31,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:50:31,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:31,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash -316833676, now seen corresponding path program 1 times [2023-01-28 00:50:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:31,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376816788] [2023-01-28 00:50:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:31,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376816788] [2023-01-28 00:50:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376816788] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:31,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217033863] [2023-01-28 00:50:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:31,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:31,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:31,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:31,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 352 [2023-01-28 00:50:31,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:31,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 352 [2023-01-28 00:50:31,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:32,055 INFO L130 PetriNetUnfolder]: 105/208 cut-off events. [2023-01-28 00:50:32,055 INFO L131 PetriNetUnfolder]: For 175/214 co-relation queries the response was YES. [2023-01-28 00:50:32,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 208 events. 105/208 cut-off events. For 175/214 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 789 event pairs, 23 based on Foata normal form. 23/221 useless extension candidates. Maximal degree in co-relation 539. Up to 149 conditions per place. [2023-01-28 00:50:32,056 INFO L137 encePairwiseOnDemand]: 350/352 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-01-28 00:50:32,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-01-28 00:50:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-01-28 00:50:32,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2023-01-28 00:50:32,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-01-28 00:50:32,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-01-28 00:50:32,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:32,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-01-28 00:50:32,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 352.0) internal successors, (1408), 4 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,062 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 489 transitions. [2023-01-28 00:50:32,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-01-28 00:50:32,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 128 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:32,064 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-01-28 00:50:32,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-01-28 00:50:32,065 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-01-28 00:50:32,065 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-01-28 00:50:32,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:32,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:32,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:50:32,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:32,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash -162568070, now seen corresponding path program 1 times [2023-01-28 00:50:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:32,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682257607] [2023-01-28 00:50:32,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:32,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:32,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682257607] [2023-01-28 00:50:32,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682257607] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:32,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:32,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:50:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339629999] [2023-01-28 00:50:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:50:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:32,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:50:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:50:32,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-28 00:50:32,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:32,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-28 00:50:32,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:32,922 INFO L130 PetriNetUnfolder]: 156/307 cut-off events. [2023-01-28 00:50:32,922 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-01-28 00:50:32,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 307 events. 156/307 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1212 event pairs, 52 based on Foata normal form. 12/318 useless extension candidates. Maximal degree in co-relation 741. Up to 148 conditions per place. [2023-01-28 00:50:32,924 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 33 selfloop transitions, 6 changer transitions 0/40 dead transitions. [2023-01-28 00:50:32,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 189 flow [2023-01-28 00:50:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:50:32,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:50:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2023-01-28 00:50:32,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2023-01-28 00:50:32,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2023-01-28 00:50:32,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2023-01-28 00:50:32,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:32,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2023-01-28 00:50:32,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,932 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,932 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 5 states and 765 transitions. [2023-01-28 00:50:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 189 flow [2023-01-28 00:50:32,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:32,934 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 92 flow [2023-01-28 00:50:32,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-28 00:50:32,934 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-28 00:50:32,934 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 92 flow [2023-01-28 00:50:32,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:32,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:32,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:50:32,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:32,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash 165079926, now seen corresponding path program 2 times [2023-01-28 00:50:32,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:32,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72435667] [2023-01-28 00:50:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:32,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:33,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:33,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72435667] [2023-01-28 00:50:33,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72435667] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:33,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:33,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:50:33,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445663962] [2023-01-28 00:50:33,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:33,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:50:33,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:33,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:50:33,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:50:33,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-28 00:50:33,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:33,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-28 00:50:33,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:33,565 INFO L130 PetriNetUnfolder]: 134/290 cut-off events. [2023-01-28 00:50:33,565 INFO L131 PetriNetUnfolder]: For 136/144 co-relation queries the response was YES. [2023-01-28 00:50:33,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 290 events. 134/290 cut-off events. For 136/144 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1248 event pairs, 39 based on Foata normal form. 12/289 useless extension candidates. Maximal degree in co-relation 788. Up to 138 conditions per place. [2023-01-28 00:50:33,567 INFO L137 encePairwiseOnDemand]: 346/352 looper letters, 31 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-01-28 00:50:33,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 217 flow [2023-01-28 00:50:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:50:33,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:50:33,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 760 transitions. [2023-01-28 00:50:33,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2023-01-28 00:50:33,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 760 transitions. [2023-01-28 00:50:33,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 760 transitions. [2023-01-28 00:50:33,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:33,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 760 transitions. [2023-01-28 00:50:33,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,576 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,576 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 92 flow. Second operand 5 states and 760 transitions. [2023-01-28 00:50:33,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 217 flow [2023-01-28 00:50:33,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:33,577 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 124 flow [2023-01-28 00:50:33,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-01-28 00:50:33,580 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2023-01-28 00:50:33,580 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 124 flow [2023-01-28 00:50:33,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:33,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:33,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:50:33,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:33,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash -879428702, now seen corresponding path program 3 times [2023-01-28 00:50:33,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:33,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182558118] [2023-01-28 00:50:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:33,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:35,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:35,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182558118] [2023-01-28 00:50:35,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182558118] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:35,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:35,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 00:50:35,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259627455] [2023-01-28 00:50:35,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:35,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 00:50:35,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 00:50:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-01-28 00:50:35,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:35,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 124 flow. Second operand has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:35,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:35,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:36,489 INFO L130 PetriNetUnfolder]: 267/541 cut-off events. [2023-01-28 00:50:36,489 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2023-01-28 00:50:36,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1662 conditions, 541 events. 267/541 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2383 event pairs, 41 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 1653. Up to 260 conditions per place. [2023-01-28 00:50:36,493 INFO L137 encePairwiseOnDemand]: 338/352 looper letters, 78 selfloop transitions, 25 changer transitions 0/103 dead transitions. [2023-01-28 00:50:36,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 612 flow [2023-01-28 00:50:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 00:50:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 00:50:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1537 transitions. [2023-01-28 00:50:36,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118912337662338 [2023-01-28 00:50:36,498 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1537 transitions. [2023-01-28 00:50:36,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1537 transitions. [2023-01-28 00:50:36,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:36,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1537 transitions. [2023-01-28 00:50:36,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.78571428571429) internal successors, (1537), 14 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,509 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,509 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 124 flow. Second operand 14 states and 1537 transitions. [2023-01-28 00:50:36,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 612 flow [2023-01-28 00:50:36,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 586 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:50:36,514 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 316 flow [2023-01-28 00:50:36,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=316, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2023-01-28 00:50:36,515 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-01-28 00:50:36,515 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 316 flow [2023-01-28 00:50:36,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.5) internal successors, (1463), 14 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:36,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:36,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:50:36,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:36,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash 150075208, now seen corresponding path program 4 times [2023-01-28 00:50:36,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:36,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067989576] [2023-01-28 00:50:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:38,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:38,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067989576] [2023-01-28 00:50:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067989576] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:38,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 00:50:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290365589] [2023-01-28 00:50:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:38,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 00:50:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 00:50:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-28 00:50:38,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:38,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 316 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:38,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:38,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:39,702 INFO L130 PetriNetUnfolder]: 305/638 cut-off events. [2023-01-28 00:50:39,703 INFO L131 PetriNetUnfolder]: For 985/985 co-relation queries the response was YES. [2023-01-28 00:50:39,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 638 events. 305/638 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3043 event pairs, 58 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 2379. Up to 378 conditions per place. [2023-01-28 00:50:39,707 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 98 selfloop transitions, 31 changer transitions 0/129 dead transitions. [2023-01-28 00:50:39,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 129 transitions, 976 flow [2023-01-28 00:50:39,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 00:50:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 00:50:39,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1538 transitions. [2023-01-28 00:50:39,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31209415584415584 [2023-01-28 00:50:39,714 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1538 transitions. [2023-01-28 00:50:39,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1538 transitions. [2023-01-28 00:50:39,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:39,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1538 transitions. [2023-01-28 00:50:39,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.85714285714286) internal successors, (1538), 14 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,728 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,728 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 316 flow. Second operand 14 states and 1538 transitions. [2023-01-28 00:50:39,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 129 transitions, 976 flow [2023-01-28 00:50:39,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 948 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:39,734 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 550 flow [2023-01-28 00:50:39,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=550, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2023-01-28 00:50:39,737 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-01-28 00:50:39,737 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 550 flow [2023-01-28 00:50:39,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:39,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:50:39,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:39,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1787597420, now seen corresponding path program 5 times [2023-01-28 00:50:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023679705] [2023-01-28 00:50:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:41,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:41,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023679705] [2023-01-28 00:50:41,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023679705] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:41,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:41,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 00:50:41,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545864923] [2023-01-28 00:50:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:41,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 00:50:41,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 00:50:41,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-28 00:50:41,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:41,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 550 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:41,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:41,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:41,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:42,880 INFO L130 PetriNetUnfolder]: 312/663 cut-off events. [2023-01-28 00:50:42,880 INFO L131 PetriNetUnfolder]: For 1608/1608 co-relation queries the response was YES. [2023-01-28 00:50:42,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 663 events. 312/663 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3240 event pairs, 62 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 2795. Up to 424 conditions per place. [2023-01-28 00:50:42,885 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 97 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2023-01-28 00:50:42,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1131 flow [2023-01-28 00:50:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 00:50:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 00:50:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1640 transitions. [2023-01-28 00:50:42,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3106060606060606 [2023-01-28 00:50:42,891 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1640 transitions. [2023-01-28 00:50:42,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1640 transitions. [2023-01-28 00:50:42,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:42,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1640 transitions. [2023-01-28 00:50:42,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 109.33333333333333) internal successors, (1640), 15 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,902 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 352.0) internal successors, (5632), 16 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,902 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 550 flow. Second operand 15 states and 1640 transitions. [2023-01-28 00:50:42,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1131 flow [2023-01-28 00:50:42,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1103 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:42,911 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 703 flow [2023-01-28 00:50:42,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=703, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-01-28 00:50:42,912 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 54 predicate places. [2023-01-28 00:50:42,912 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 703 flow [2023-01-28 00:50:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:42,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:42,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:50:42,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:42,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -472083164, now seen corresponding path program 6 times [2023-01-28 00:50:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302326705] [2023-01-28 00:50:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:42,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:44,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:44,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302326705] [2023-01-28 00:50:44,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302326705] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:44,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:44,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-28 00:50:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108270668] [2023-01-28 00:50:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 00:50:44,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 00:50:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-01-28 00:50:44,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:44,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 703 flow. Second operand has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:44,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:44,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:44,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:45,608 INFO L130 PetriNetUnfolder]: 316/681 cut-off events. [2023-01-28 00:50:45,609 INFO L131 PetriNetUnfolder]: For 1859/1859 co-relation queries the response was YES. [2023-01-28 00:50:45,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 681 events. 316/681 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3364 event pairs, 66 based on Foata normal form. 1/681 useless extension candidates. Maximal degree in co-relation 2973. Up to 433 conditions per place. [2023-01-28 00:50:45,615 INFO L137 encePairwiseOnDemand]: 336/352 looper letters, 102 selfloop transitions, 35 changer transitions 0/137 dead transitions. [2023-01-28 00:50:45,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 137 transitions, 1284 flow [2023-01-28 00:50:45,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 00:50:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 00:50:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1537 transitions. [2023-01-28 00:50:45,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118912337662338 [2023-01-28 00:50:45,620 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1537 transitions. [2023-01-28 00:50:45,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1537 transitions. [2023-01-28 00:50:45,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:45,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1537 transitions. [2023-01-28 00:50:45,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 109.78571428571429) internal successors, (1537), 14 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:45,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:45,631 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 352.0) internal successors, (5280), 15 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:45,631 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 703 flow. Second operand 14 states and 1537 transitions. [2023-01-28 00:50:45,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 137 transitions, 1284 flow [2023-01-28 00:50:45,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 1230 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-01-28 00:50:45,642 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 819 flow [2023-01-28 00:50:45,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=819, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2023-01-28 00:50:45,643 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-01-28 00:50:45,643 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 819 flow [2023-01-28 00:50:45,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.23529411764706) internal successors, (1772), 17 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:45,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:45,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:45,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:50:45,644 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:45,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash 636504459, now seen corresponding path program 1 times [2023-01-28 00:50:45,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:45,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118061614] [2023-01-28 00:50:45,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:45,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:46,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:46,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118061614] [2023-01-28 00:50:46,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118061614] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:46,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:46,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 00:50:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486114942] [2023-01-28 00:50:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:46,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 00:50:46,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:46,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 00:50:46,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 00:50:46,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 352 [2023-01-28 00:50:46,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 819 flow. Second operand has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:46,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:46,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 352 [2023-01-28 00:50:46,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:46,598 INFO L130 PetriNetUnfolder]: 405/926 cut-off events. [2023-01-28 00:50:46,598 INFO L131 PetriNetUnfolder]: For 2806/2806 co-relation queries the response was YES. [2023-01-28 00:50:46,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4095 conditions, 926 events. 405/926 cut-off events. For 2806/2806 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5498 event pairs, 59 based on Foata normal form. 6/931 useless extension candidates. Maximal degree in co-relation 4062. Up to 315 conditions per place. [2023-01-28 00:50:46,605 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 102 selfloop transitions, 47 changer transitions 15/164 dead transitions. [2023-01-28 00:50:46,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 1704 flow [2023-01-28 00:50:46,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:50:46,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:50:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 843 transitions. [2023-01-28 00:50:46,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34212662337662336 [2023-01-28 00:50:46,608 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 843 transitions. [2023-01-28 00:50:46,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 843 transitions. [2023-01-28 00:50:46,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:46,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 843 transitions. [2023-01-28 00:50:46,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.42857142857143) internal successors, (843), 7 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:46,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:46,614 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:46,614 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 819 flow. Second operand 7 states and 843 transitions. [2023-01-28 00:50:46,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 1704 flow [2023-01-28 00:50:46,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 164 transitions, 1594 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-01-28 00:50:46,630 INFO L231 Difference]: Finished difference. Result has 96 places, 98 transitions, 934 flow [2023-01-28 00:50:46,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=934, PETRI_PLACES=96, PETRI_TRANSITIONS=98} [2023-01-28 00:50:46,631 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 60 predicate places. [2023-01-28 00:50:46,631 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 934 flow [2023-01-28 00:50:46,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:46,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:46,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:46,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:50:46,632 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:46,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1929965402, now seen corresponding path program 7 times [2023-01-28 00:50:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216557260] [2023-01-28 00:50:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:48,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:48,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216557260] [2023-01-28 00:50:48,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216557260] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:48,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:48,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 00:50:48,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841771886] [2023-01-28 00:50:48,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:48,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 00:50:48,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:48,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 00:50:48,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 00:50:48,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:48,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 934 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:48,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:48,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:48,825 INFO L130 PetriNetUnfolder]: 402/908 cut-off events. [2023-01-28 00:50:48,825 INFO L131 PetriNetUnfolder]: For 3131/3131 co-relation queries the response was YES. [2023-01-28 00:50:48,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 908 events. 402/908 cut-off events. For 3131/3131 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5210 event pairs, 161 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 4181. Up to 761 conditions per place. [2023-01-28 00:50:48,833 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 118 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2023-01-28 00:50:48,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 141 transitions, 1513 flow [2023-01-28 00:50:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 00:50:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 00:50:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1414 transitions. [2023-01-28 00:50:48,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090034965034965 [2023-01-28 00:50:48,837 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1414 transitions. [2023-01-28 00:50:48,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1414 transitions. [2023-01-28 00:50:48,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:48,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1414 transitions. [2023-01-28 00:50:48,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 108.76923076923077) internal successors, (1414), 13 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:48,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:48,846 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:48,846 INFO L175 Difference]: Start difference. First operand has 96 places, 98 transitions, 934 flow. Second operand 13 states and 1414 transitions. [2023-01-28 00:50:48,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 141 transitions, 1513 flow [2023-01-28 00:50:48,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 141 transitions, 1436 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-01-28 00:50:48,858 INFO L231 Difference]: Finished difference. Result has 106 places, 108 transitions, 1040 flow [2023-01-28 00:50:48,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1040, PETRI_PLACES=106, PETRI_TRANSITIONS=108} [2023-01-28 00:50:48,859 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 70 predicate places. [2023-01-28 00:50:48,859 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 108 transitions, 1040 flow [2023-01-28 00:50:48,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:48,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:48,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:48,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 00:50:48,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:48,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:48,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1469704044, now seen corresponding path program 8 times [2023-01-28 00:50:48,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:48,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416291521] [2023-01-28 00:50:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:49,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:49,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416291521] [2023-01-28 00:50:49,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416291521] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:49,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:49,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:50:49,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180954172] [2023-01-28 00:50:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:49,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 00:50:49,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:49,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 00:50:49,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 00:50:49,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 352 [2023-01-28 00:50:49,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 1040 flow. Second operand has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:49,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:49,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 352 [2023-01-28 00:50:49,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:49,396 INFO L130 PetriNetUnfolder]: 155/455 cut-off events. [2023-01-28 00:50:49,396 INFO L131 PetriNetUnfolder]: For 2064/2071 co-relation queries the response was YES. [2023-01-28 00:50:49,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 455 events. 155/455 cut-off events. For 2064/2071 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2521 event pairs, 90 based on Foata normal form. 14/460 useless extension candidates. Maximal degree in co-relation 2145. Up to 372 conditions per place. [2023-01-28 00:50:49,399 INFO L137 encePairwiseOnDemand]: 347/352 looper letters, 88 selfloop transitions, 11 changer transitions 0/106 dead transitions. [2023-01-28 00:50:49,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 106 transitions, 1209 flow [2023-01-28 00:50:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:50:49,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:50:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-01-28 00:50:49,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43068181818181817 [2023-01-28 00:50:49,402 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-01-28 00:50:49,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-01-28 00:50:49,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:49,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-01-28 00:50:49,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:49,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:49,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 352.0) internal successors, (2112), 6 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:49,407 INFO L175 Difference]: Start difference. First operand has 106 places, 108 transitions, 1040 flow. Second operand 5 states and 758 transitions. [2023-01-28 00:50:49,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 106 transitions, 1209 flow [2023-01-28 00:50:49,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 106 transitions, 1112 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-01-28 00:50:49,417 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 895 flow [2023-01-28 00:50:49,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=895, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2023-01-28 00:50:49,418 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2023-01-28 00:50:49,418 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 895 flow [2023-01-28 00:50:49,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:49,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:49,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:49,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 00:50:49,418 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:49,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:49,419 INFO L85 PathProgramCache]: Analyzing trace with hash 835537406, now seen corresponding path program 9 times [2023-01-28 00:50:49,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:49,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828935471] [2023-01-28 00:50:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:49,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:50,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828935471] [2023-01-28 00:50:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828935471] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 00:50:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741389775] [2023-01-28 00:50:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 00:50:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 00:50:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 00:50:50,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:50,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 895 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:50,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:50,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:50,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:51,461 INFO L130 PetriNetUnfolder]: 198/554 cut-off events. [2023-01-28 00:50:51,461 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2023-01-28 00:50:51,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 554 events. 198/554 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3167 event pairs, 98 based on Foata normal form. 2/555 useless extension candidates. Maximal degree in co-relation 2404. Up to 451 conditions per place. [2023-01-28 00:50:51,465 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 113 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2023-01-28 00:50:51,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 135 transitions, 1419 flow [2023-01-28 00:50:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 00:50:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 00:50:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2023-01-28 00:50:51,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30823863636363635 [2023-01-28 00:50:51,469 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1302 transitions. [2023-01-28 00:50:51,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1302 transitions. [2023-01-28 00:50:51,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:51,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1302 transitions. [2023-01-28 00:50:51,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.5) internal successors, (1302), 12 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:51,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:51,477 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:51,477 INFO L175 Difference]: Start difference. First operand has 100 places, 97 transitions, 895 flow. Second operand 12 states and 1302 transitions. [2023-01-28 00:50:51,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 135 transitions, 1419 flow [2023-01-28 00:50:51,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 135 transitions, 1408 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 00:50:51,493 INFO L231 Difference]: Finished difference. Result has 115 places, 108 transitions, 1075 flow [2023-01-28 00:50:51,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1075, PETRI_PLACES=115, PETRI_TRANSITIONS=108} [2023-01-28 00:50:51,495 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 79 predicate places. [2023-01-28 00:50:51,495 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 108 transitions, 1075 flow [2023-01-28 00:50:51,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:51,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:51,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:51,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 00:50:51,496 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:51,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash 420697918, now seen corresponding path program 10 times [2023-01-28 00:50:51,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:51,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168272973] [2023-01-28 00:50:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:52,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168272973] [2023-01-28 00:50:52,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168272973] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:52,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:52,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 00:50:52,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157959199] [2023-01-28 00:50:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 00:50:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 00:50:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 00:50:52,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:52,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 108 transitions, 1075 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:52,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:52,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:52,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:53,530 INFO L130 PetriNetUnfolder]: 216/607 cut-off events. [2023-01-28 00:50:53,531 INFO L131 PetriNetUnfolder]: For 2693/2693 co-relation queries the response was YES. [2023-01-28 00:50:53,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 607 events. 216/607 cut-off events. For 2693/2693 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3615 event pairs, 114 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 2790. Up to 504 conditions per place. [2023-01-28 00:50:53,536 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 120 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2023-01-28 00:50:53,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 142 transitions, 1605 flow [2023-01-28 00:50:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 00:50:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 00:50:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2023-01-28 00:50:53,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30823863636363635 [2023-01-28 00:50:53,539 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1302 transitions. [2023-01-28 00:50:53,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1302 transitions. [2023-01-28 00:50:53,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:53,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1302 transitions. [2023-01-28 00:50:53,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.5) internal successors, (1302), 12 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:53,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:53,546 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:53,546 INFO L175 Difference]: Start difference. First operand has 115 places, 108 transitions, 1075 flow. Second operand 12 states and 1302 transitions. [2023-01-28 00:50:53,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 142 transitions, 1605 flow [2023-01-28 00:50:53,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 142 transitions, 1538 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-01-28 00:50:53,561 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 1197 flow [2023-01-28 00:50:53,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2023-01-28 00:50:53,561 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2023-01-28 00:50:53,562 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 1197 flow [2023-01-28 00:50:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:53,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:53,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:53,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 00:50:53,562 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:53,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 620461591, now seen corresponding path program 2 times [2023-01-28 00:50:53,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:53,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819903189] [2023-01-28 00:50:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:53,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:54,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819903189] [2023-01-28 00:50:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819903189] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 00:50:54,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932432618] [2023-01-28 00:50:54,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:54,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 00:50:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 00:50:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-01-28 00:50:54,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 352 [2023-01-28 00:50:54,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 1197 flow. Second operand has 11 states, 11 states have (on average 107.9090909090909) internal successors, (1187), 11 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:54,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:54,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 352 [2023-01-28 00:50:54,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:54,816 INFO L130 PetriNetUnfolder]: 232/681 cut-off events. [2023-01-28 00:50:54,817 INFO L131 PetriNetUnfolder]: For 3191/3191 co-relation queries the response was YES. [2023-01-28 00:50:54,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3185 conditions, 681 events. 232/681 cut-off events. For 3191/3191 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4320 event pairs, 81 based on Foata normal form. 11/691 useless extension candidates. Maximal degree in co-relation 3135. Up to 239 conditions per place. [2023-01-28 00:50:54,822 INFO L137 encePairwiseOnDemand]: 343/352 looper letters, 103 selfloop transitions, 39 changer transitions 32/174 dead transitions. [2023-01-28 00:50:54,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 174 transitions, 2054 flow [2023-01-28 00:50:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 00:50:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 00:50:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1451 transitions. [2023-01-28 00:50:54,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31708916083916083 [2023-01-28 00:50:54,826 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1451 transitions. [2023-01-28 00:50:54,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1451 transitions. [2023-01-28 00:50:54,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:54,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1451 transitions. [2023-01-28 00:50:54,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 111.61538461538461) internal successors, (1451), 13 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:54,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:54,833 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 352.0) internal successors, (4928), 14 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:54,834 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 1197 flow. Second operand 13 states and 1451 transitions. [2023-01-28 00:50:54,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 174 transitions, 2054 flow [2023-01-28 00:50:54,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 174 transitions, 1996 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:54,852 INFO L231 Difference]: Finished difference. Result has 141 places, 89 transitions, 1019 flow [2023-01-28 00:50:54,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1019, PETRI_PLACES=141, PETRI_TRANSITIONS=89} [2023-01-28 00:50:54,852 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 105 predicate places. [2023-01-28 00:50:54,853 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 89 transitions, 1019 flow [2023-01-28 00:50:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.9090909090909) internal successors, (1187), 11 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:54,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:54,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 00:50:54,853 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:54,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1153106705, now seen corresponding path program 3 times [2023-01-28 00:50:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:54,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34998641] [2023-01-28 00:50:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:55,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:55,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34998641] [2023-01-28 00:50:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34998641] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:55,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 00:50:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429335091] [2023-01-28 00:50:55,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:55,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 00:50:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 00:50:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 00:50:55,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 352 [2023-01-28 00:50:55,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 89 transitions, 1019 flow. Second operand has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:55,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:55,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 352 [2023-01-28 00:50:55,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:55,667 INFO L130 PetriNetUnfolder]: 155/456 cut-off events. [2023-01-28 00:50:55,668 INFO L131 PetriNetUnfolder]: For 2823/2823 co-relation queries the response was YES. [2023-01-28 00:50:55,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 456 events. 155/456 cut-off events. For 2823/2823 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2496 event pairs, 37 based on Foata normal form. 5/461 useless extension candidates. Maximal degree in co-relation 2253. Up to 160 conditions per place. [2023-01-28 00:50:55,671 INFO L137 encePairwiseOnDemand]: 344/352 looper letters, 92 selfloop transitions, 28 changer transitions 12/132 dead transitions. [2023-01-28 00:50:55,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 132 transitions, 1598 flow [2023-01-28 00:50:55,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 00:50:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 00:50:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 841 transitions. [2023-01-28 00:50:55,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34131493506493504 [2023-01-28 00:50:55,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 841 transitions. [2023-01-28 00:50:55,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 841 transitions. [2023-01-28 00:50:55,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:55,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 841 transitions. [2023-01-28 00:50:55,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.14285714285714) internal successors, (841), 7 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:55,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:55,678 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 352.0) internal successors, (2816), 8 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:55,679 INFO L175 Difference]: Start difference. First operand has 141 places, 89 transitions, 1019 flow. Second operand 7 states and 841 transitions. [2023-01-28 00:50:55,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 132 transitions, 1598 flow [2023-01-28 00:50:55,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 132 transitions, 1320 flow, removed 99 selfloop flow, removed 28 redundant places. [2023-01-28 00:50:55,691 INFO L231 Difference]: Finished difference. Result has 103 places, 78 transitions, 774 flow [2023-01-28 00:50:55,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=103, PETRI_TRANSITIONS=78} [2023-01-28 00:50:55,691 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 67 predicate places. [2023-01-28 00:50:55,691 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 78 transitions, 774 flow [2023-01-28 00:50:55,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 113.625) internal successors, (909), 8 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:55,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:55,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:55,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 00:50:55,692 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:55,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1122143276, now seen corresponding path program 11 times [2023-01-28 00:50:55,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:55,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559358475] [2023-01-28 00:50:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:55,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559358475] [2023-01-28 00:50:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559358475] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:56,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:56,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 00:50:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281892549] [2023-01-28 00:50:56,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:56,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 00:50:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:56,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 00:50:56,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 00:50:56,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:56,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 78 transitions, 774 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:56,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:56,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:56,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:57,615 INFO L130 PetriNetUnfolder]: 178/504 cut-off events. [2023-01-28 00:50:57,615 INFO L131 PetriNetUnfolder]: For 2219/2219 co-relation queries the response was YES. [2023-01-28 00:50:57,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 504 events. 178/504 cut-off events. For 2219/2219 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2772 event pairs, 67 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 2222. Up to 357 conditions per place. [2023-01-28 00:50:57,619 INFO L137 encePairwiseOnDemand]: 339/352 looper letters, 84 selfloop transitions, 23 changer transitions 16/123 dead transitions. [2023-01-28 00:50:57,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 123 transitions, 1348 flow [2023-01-28 00:50:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 00:50:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 00:50:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1307 transitions. [2023-01-28 00:50:57,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3094223484848485 [2023-01-28 00:50:57,622 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1307 transitions. [2023-01-28 00:50:57,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1307 transitions. [2023-01-28 00:50:57,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:57,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1307 transitions. [2023-01-28 00:50:57,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.91666666666667) internal successors, (1307), 12 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:57,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:57,629 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:57,629 INFO L175 Difference]: Start difference. First operand has 103 places, 78 transitions, 774 flow. Second operand 12 states and 1307 transitions. [2023-01-28 00:50:57,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 123 transitions, 1348 flow [2023-01-28 00:50:57,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 1243 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-01-28 00:50:57,638 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 876 flow [2023-01-28 00:50:57,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=876, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2023-01-28 00:50:57,638 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-01-28 00:50:57,638 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 876 flow [2023-01-28 00:50:57,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:57,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:57,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 00:50:57,639 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:57,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1454018746, now seen corresponding path program 12 times [2023-01-28 00:50:57,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:57,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641012686] [2023-01-28 00:50:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:57,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:58,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641012686] [2023-01-28 00:50:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641012686] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:58,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:58,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 00:50:58,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384691647] [2023-01-28 00:50:58,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:58,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 00:50:58,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 00:50:58,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-01-28 00:50:58,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 352 [2023-01-28 00:50:58,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 876 flow. Second operand has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:58,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:58,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 352 [2023-01-28 00:50:58,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:59,466 INFO L130 PetriNetUnfolder]: 163/472 cut-off events. [2023-01-28 00:50:59,466 INFO L131 PetriNetUnfolder]: For 2081/2081 co-relation queries the response was YES. [2023-01-28 00:50:59,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 472 events. 163/472 cut-off events. For 2081/2081 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2558 event pairs, 65 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2107. Up to 351 conditions per place. [2023-01-28 00:50:59,470 INFO L137 encePairwiseOnDemand]: 340/352 looper letters, 80 selfloop transitions, 18 changer transitions 21/119 dead transitions. [2023-01-28 00:50:59,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 119 transitions, 1313 flow [2023-01-28 00:50:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 00:50:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 00:50:59,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1306 transitions. [2023-01-28 00:50:59,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3091856060606061 [2023-01-28 00:50:59,475 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1306 transitions. [2023-01-28 00:50:59,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1306 transitions. [2023-01-28 00:50:59,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:59,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1306 transitions. [2023-01-28 00:50:59,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.83333333333333) internal successors, (1306), 12 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:59,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:59,480 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 352.0) internal successors, (4576), 13 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:59,480 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 876 flow. Second operand 12 states and 1306 transitions. [2023-01-28 00:50:59,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 119 transitions, 1313 flow [2023-01-28 00:50:59,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 119 transitions, 1270 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-01-28 00:50:59,488 INFO L231 Difference]: Finished difference. Result has 108 places, 83 transitions, 839 flow [2023-01-28 00:50:59,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=352, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=839, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2023-01-28 00:50:59,489 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2023-01-28 00:50:59,489 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 839 flow [2023-01-28 00:50:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.4) internal successors, (1566), 15 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:59,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:59,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 00:50:59,490 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:59,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1412750582, now seen corresponding path program 13 times [2023-01-28 00:50:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496135430] [2023-01-28 00:50:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:51:00,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 00:51:00,134 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:383) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:154) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-01-28 00:51:00,137 INFO L158 Benchmark]: Toolchain (without parser) took 41365.26ms. Allocated memory was 375.4MB in the beginning and 780.1MB in the end (delta: 404.8MB). Free memory was 332.6MB in the beginning and 584.6MB in the end (delta: -252.0MB). Peak memory consumption was 458.6MB. Max. memory is 16.0GB. [2023-01-28 00:51:00,137 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 213.6MB in the beginning and 213.4MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:51:00,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.88ms. Allocated memory is still 375.4MB. Free memory was 332.3MB in the beginning and 338.6MB in the end (delta: -6.4MB). Peak memory consumption was 55.7MB. Max. memory is 16.0GB. [2023-01-28 00:51:00,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.74ms. Allocated memory is still 375.4MB. Free memory was 337.8MB in the beginning and 333.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 00:51:00,138 INFO L158 Benchmark]: Boogie Preprocessor took 49.72ms. Allocated memory is still 375.4MB. Free memory was 333.7MB in the beginning and 331.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:51:00,138 INFO L158 Benchmark]: RCFGBuilder took 631.57ms. Allocated memory is still 375.4MB. Free memory was 331.1MB in the beginning and 307.2MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 00:51:00,138 INFO L158 Benchmark]: TraceAbstraction took 39850.55ms. Allocated memory was 375.4MB in the beginning and 780.1MB in the end (delta: 404.8MB). Free memory was 306.4MB in the beginning and 584.6MB in the end (delta: -278.1MB). Peak memory consumption was 430.2MB. Max. memory is 16.0GB. [2023-01-28 00:51:00,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory was 213.6MB in the beginning and 213.4MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 768.88ms. Allocated memory is still 375.4MB. Free memory was 332.3MB in the beginning and 338.6MB in the end (delta: -6.4MB). Peak memory consumption was 55.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.74ms. Allocated memory is still 375.4MB. Free memory was 337.8MB in the beginning and 333.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.72ms. Allocated memory is still 375.4MB. Free memory was 333.7MB in the beginning and 331.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 631.57ms. Allocated memory is still 375.4MB. Free memory was 331.1MB in the beginning and 307.2MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 39850.55ms. Allocated memory was 375.4MB in the beginning and 780.1MB in the end (delta: 404.8MB). Free memory was 306.4MB in the beginning and 584.6MB in the end (delta: -278.1MB). Peak memory consumption was 430.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.9s, 163 PlacesBefore, 36 PlacesAfterwards, 163 TransitionsBefore, 32 TransitionsAfterwards, 2604 CoEnabledTransitionPairs, 8 FixpointIterations, 97 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 177 TotalNumberOfCompositions, 5770 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2818, independent: 2592, independent conditional: 0, independent unconditional: 2592, dependent: 226, dependent conditional: 0, dependent unconditional: 226, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1388, independent: 1342, independent conditional: 0, independent unconditional: 1342, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2818, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 1388, unknown conditional: 0, unknown unconditional: 1388] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.InterpolantChecker.checkInductivity(InterpolantChecker.java:409) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-01-28 00:51:00,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...