/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-3_1-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:50:23,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:50:23,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:50:23,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:50:23,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:50:23,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:50:23,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:50:23,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:50:23,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:50:23,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:50:23,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:50:23,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:50:23,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:50:23,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:50:23,152 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:50:23,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:50:23,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:50:23,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 00:50:23,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 00:50:23,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 00:50:23,166 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 00:50:23,183 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:50:23,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:50:23,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:50:23,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:50:23,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:50:23,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:50:23,185 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:50:23,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:50:23,185 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:50:23,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:50:23,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:50:23,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:23,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:50:23,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:50:23,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:50:23,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:50:23,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:50:23,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:50:23,397 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:50:23,398 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:50:23,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-01-28 00:50:24,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:50:24,598 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:50:24,599 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_1-container_of-global.i [2023-01-28 00:50:24,617 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0191504/a5383eda36314f31b98d1bb9f17e6530/FLAG9dd5f2aad [2023-01-28 00:50:24,633 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a0191504/a5383eda36314f31b98d1bb9f17e6530 [2023-01-28 00:50:24,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:50:24,636 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:50:24,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:24,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:50:24,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:50:24,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:24" (1/1) ... [2023-01-28 00:50:24,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3240f5a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:24, skipping insertion in model container [2023-01-28 00:50:24,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:24" (1/1) ... [2023-01-28 00:50:24,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:50:24,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:50:25,063 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-3_1-container_of-global.i[76084,76097] [2023-01-28 00:50:25,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:25,112 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:50:25,157 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-3_1-container_of-global.i[76084,76097] [2023-01-28 00:50:25,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:25,297 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:50:25,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25 WrapperNode [2023-01-28 00:50:25,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:25,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:25,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:50:25,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:50:25,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,361 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-01-28 00:50:25,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:25,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:50:25,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:50:25,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:50:25,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,384 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:50:25,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:50:25,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:50:25,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:50:25,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (1/1) ... [2023-01-28 00:50:25,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:25,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:50:25,411 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 00:50:25,421 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 00:50:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:50:25,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:50:25,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-28 00:50:25,436 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:50:25,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:50:25,437 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 00:50:25,701 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:50:25,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:50:25,963 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:50:25,970 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:50:25,970 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:50:25,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:25 BoogieIcfgContainer [2023-01-28 00:50:25,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:50:25,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:50:25,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:50:25,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:50:25,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:50:24" (1/3) ... [2023-01-28 00:50:25,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ce0c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:25, skipping insertion in model container [2023-01-28 00:50:25,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:25" (2/3) ... [2023-01-28 00:50:25,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ce0c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:25, skipping insertion in model container [2023-01-28 00:50:25,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:25" (3/3) ... [2023-01-28 00:50:25,979 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_1-container_of-global.i [2023-01-28 00:50:25,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:50:25,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-01-28 00:50:25,990 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:50:26,054 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 00:50:26,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 174 transitions, 364 flow [2023-01-28 00:50:26,144 INFO L130 PetriNetUnfolder]: 10/212 cut-off events. [2023-01-28 00:50:26,144 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:26,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 212 events. 10/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2023-01-28 00:50:26,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 174 transitions, 364 flow [2023-01-28 00:50:26,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 162 transitions, 336 flow [2023-01-28 00:50:26,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:50:26,169 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 162 transitions, 336 flow [2023-01-28 00:50:26,171 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 162 transitions, 336 flow [2023-01-28 00:50:26,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 162 transitions, 336 flow [2023-01-28 00:50:26,195 INFO L130 PetriNetUnfolder]: 7/193 cut-off events. [2023-01-28 00:50:26,195 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:26,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 193 events. 7/193 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 298 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 115. Up to 4 conditions per place. [2023-01-28 00:50:26,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 2392 [2023-01-28 00:50:34,998 INFO L134 LiptonReduction]: Checked pairs total: 5218 [2023-01-28 00:50:34,998 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-01-28 00:50:35,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:50:35,034 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;@5e19120a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:50:35,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-01-28 00:50:35,035 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-28 00:50:35,035 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:50:35,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:35,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-28 00:50:35,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:35,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:35,040 INFO L85 PathProgramCache]: Analyzing trace with hash 603, now seen corresponding path program 1 times [2023-01-28 00:50:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070278842] [2023-01-28 00:50:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:35,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:35,241 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 00:50:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:35,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070278842] [2023-01-28 00:50:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070278842] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:35,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:35,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-28 00:50:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068928444] [2023-01-28 00:50:35,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 00:50:35,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 00:50:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 00:50:35,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 346 [2023-01-28 00:50:35,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:35,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 346 [2023-01-28 00:50:35,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:35,374 INFO L130 PetriNetUnfolder]: 217/419 cut-off events. [2023-01-28 00:50:35,375 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-01-28 00:50:35,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 419 events. 217/419 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1957 event pairs, 216 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 738. Up to 391 conditions per place. [2023-01-28 00:50:35,379 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-01-28 00:50:35,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2023-01-28 00:50:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 00:50:35,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 00:50:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 344 transitions. [2023-01-28 00:50:35,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49710982658959535 [2023-01-28 00:50:35,394 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 344 transitions. [2023-01-28 00:50:35,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 344 transitions. [2023-01-28 00:50:35,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:35,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 344 transitions. [2023-01-28 00:50:35,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 172.0) internal successors, (344), 2 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,405 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 346.0) internal successors, (1038), 3 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,406 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 76 flow. Second operand 2 states and 344 transitions. [2023-01-28 00:50:35,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2023-01-28 00:50:35,410 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 00:50:35,411 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2023-01-28 00:50:35,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, 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 00:50:35,414 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-01-28 00:50:35,414 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2023-01-28 00:50:35,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:35,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-28 00:50:35,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:50:35,415 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 00:50:35,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:35,416 INFO L85 PathProgramCache]: Analyzing trace with hash 18565803, now seen corresponding path program 1 times [2023-01-28 00:50:35,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:35,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883291017] [2023-01-28 00:50:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:35,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:35,680 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 00:50:35,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:35,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883291017] [2023-01-28 00:50:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883291017] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:35,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699760493] [2023-01-28 00:50:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:35,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 346 [2023-01-28 00:50:35,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:35,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 346 [2023-01-28 00:50:35,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:35,841 INFO L130 PetriNetUnfolder]: 639/1091 cut-off events. [2023-01-28 00:50:35,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:35,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 1091 events. 639/1091 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5128 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 00:50:35,848 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-01-28 00:50:35,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 172 flow [2023-01-28 00:50:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-01-28 00:50:35,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055876685934489 [2023-01-28 00:50:35,850 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-01-28 00:50:35,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-01-28 00:50:35,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:35,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-01-28 00:50:35,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,855 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 421 transitions. [2023-01-28 00:50:35,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 172 flow [2023-01-28 00:50:35,855 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 00:50:35,856 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 112 flow [2023-01-28 00:50:35,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, 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 00:50:35,857 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-28 00:50:35,857 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 112 flow [2023-01-28 00:50:35,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:35,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 00:50:35,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:50:35,858 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 00:50:35,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash 575539229, now seen corresponding path program 1 times [2023-01-28 00:50:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:35,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626643953] [2023-01-28 00:50:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:35,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:35,987 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 00:50:35,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:35,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626643953] [2023-01-28 00:50:35,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626643953] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:35,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:35,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:35,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956478493] [2023-01-28 00:50:35,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:35,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:35,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:35,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 346 [2023-01-28 00:50:35,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:35,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 346 [2023-01-28 00:50:35,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:36,151 INFO L130 PetriNetUnfolder]: 755/1298 cut-off events. [2023-01-28 00:50:36,152 INFO L131 PetriNetUnfolder]: For 478/478 co-relation queries the response was YES. [2023-01-28 00:50:36,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 1298 events. 755/1298 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6430 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 00:50:36,156 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 39 selfloop transitions, 9 changer transitions 2/50 dead transitions. [2023-01-28 00:50:36,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 274 flow [2023-01-28 00:50:36,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:36,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-01-28 00:50:36,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046242774566474 [2023-01-28 00:50:36,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-01-28 00:50:36,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-01-28 00:50:36,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:36,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-01-28 00:50:36,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,161 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 112 flow. Second operand 3 states and 420 transitions. [2023-01-28 00:50:36,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 274 flow [2023-01-28 00:50:36,163 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 00:50:36,163 INFO L231 Difference]: Finished difference. Result has 36 places, 40 transitions, 169 flow [2023-01-28 00:50:36,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, 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 00:50:36,164 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-28 00:50:36,164 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 40 transitions, 169 flow [2023-01-28 00:50:36,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:36,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:36,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:50:36,165 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 00:50:36,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash 857877734, now seen corresponding path program 1 times [2023-01-28 00:50:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730339997] [2023-01-28 00:50:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:36,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:36,243 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 00:50:36,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:36,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730339997] [2023-01-28 00:50:36,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730339997] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:36,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:36,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204575504] [2023-01-28 00:50:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:36,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:36,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 346 [2023-01-28 00:50:36,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 40 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:36,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 346 [2023-01-28 00:50:36,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:36,294 INFO L130 PetriNetUnfolder]: 105/210 cut-off events. [2023-01-28 00:50:36,295 INFO L131 PetriNetUnfolder]: For 167/193 co-relation queries the response was YES. [2023-01-28 00:50:36,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 210 events. 105/210 cut-off events. For 167/193 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 803 event pairs, 23 based on Foata normal form. 23/223 useless extension candidates. Maximal degree in co-relation 543. Up to 149 conditions per place. [2023-01-28 00:50:36,296 INFO L137 encePairwiseOnDemand]: 344/346 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-01-28 00:50:36,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 142 flow [2023-01-28 00:50:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-01-28 00:50:36,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682080924855491 [2023-01-28 00:50:36,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-01-28 00:50:36,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-01-28 00:50:36,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:36,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-01-28 00:50:36,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,300 INFO L175 Difference]: Start difference. First operand has 36 places, 40 transitions, 169 flow. Second operand 3 states and 486 transitions. [2023-01-28 00:50:36,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 142 flow [2023-01-28 00:50:36,301 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 00:50:36,301 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 58 flow [2023-01-28 00:50:36,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, 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 00:50:36,302 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-01-28 00:50:36,302 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 58 flow [2023-01-28 00:50:36,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:36,302 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 00:50:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:50:36,303 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 00:50:36,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1911713549, now seen corresponding path program 1 times [2023-01-28 00:50:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:36,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709035682] [2023-01-28 00:50:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:36,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:36,580 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 00:50:36,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:36,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709035682] [2023-01-28 00:50:36,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709035682] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:36,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:36,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:36,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243394166] [2023-01-28 00:50:36,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:36,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:36,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2023-01-28 00:50:36,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:36,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2023-01-28 00:50:36,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:36,639 INFO L130 PetriNetUnfolder]: 136/275 cut-off events. [2023-01-28 00:50:36,639 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-01-28 00:50:36,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 275 events. 136/275 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1052 event pairs, 52 based on Foata normal form. 12/286 useless extension candidates. Maximal degree in co-relation 667. Up to 140 conditions per place. [2023-01-28 00:50:36,640 INFO L137 encePairwiseOnDemand]: 342/346 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-01-28 00:50:36,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 155 flow [2023-01-28 00:50:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-01-28 00:50:36,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479768786127168 [2023-01-28 00:50:36,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-01-28 00:50:36,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-01-28 00:50:36,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:36,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-01-28 00:50:36,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,644 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,645 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 58 flow. Second operand 3 states and 465 transitions. [2023-01-28 00:50:36,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 155 flow [2023-01-28 00:50:36,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 153 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:36,645 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 76 flow [2023-01-28 00:50:36,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-01-28 00:50:36,646 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-01-28 00:50:36,646 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 76 flow [2023-01-28 00:50:36,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:36,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:36,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:50:36,647 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 00:50:36,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:36,647 INFO L85 PathProgramCache]: Analyzing trace with hash 189632573, now seen corresponding path program 2 times [2023-01-28 00:50:36,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:36,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917417984] [2023-01-28 00:50:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:36,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:36,952 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 00:50:36,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:36,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917417984] [2023-01-28 00:50:36,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917417984] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:36,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:36,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:36,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876550403] [2023-01-28 00:50:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:36,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:36,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:36,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:36,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 346 [2023-01-28 00:50:36,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:36,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 346 [2023-01-28 00:50:36,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:37,017 INFO L130 PetriNetUnfolder]: 54/140 cut-off events. [2023-01-28 00:50:37,017 INFO L131 PetriNetUnfolder]: For 70/71 co-relation queries the response was YES. [2023-01-28 00:50:37,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 140 events. 54/140 cut-off events. For 70/71 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 26 based on Foata normal form. 12/148 useless extension candidates. Maximal degree in co-relation 365. Up to 69 conditions per place. [2023-01-28 00:50:37,018 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 23 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-01-28 00:50:37,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 129 flow [2023-01-28 00:50:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 458 transitions. [2023-01-28 00:50:37,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441233140655106 [2023-01-28 00:50:37,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 458 transitions. [2023-01-28 00:50:37,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 458 transitions. [2023-01-28 00:50:37,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:37,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 458 transitions. [2023-01-28 00:50:37,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:37,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:37,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:37,023 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 76 flow. Second operand 3 states and 458 transitions. [2023-01-28 00:50:37,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 129 flow [2023-01-28 00:50:37,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 115 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 00:50:37,025 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 61 flow [2023-01-28 00:50:37,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-01-28 00:50:37,027 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-01-28 00:50:37,027 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 61 flow [2023-01-28 00:50:37,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:37,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:37,028 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 00:50:37,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:50:37,028 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 00:50:37,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1158793067, now seen corresponding path program 3 times [2023-01-28 00:50:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:37,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979493968] [2023-01-28 00:50:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:38,362 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 00:50:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979493968] [2023-01-28 00:50:38,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979493968] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:38,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:38,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 00:50:38,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413636627] [2023-01-28 00:50:38,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:38,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 00:50:38,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:38,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 00:50:38,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-28 00:50:38,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 346 [2023-01-28 00:50:38,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 61 flow. Second operand has 13 states, 13 states have (on average 103.61538461538461) internal successors, (1347), 13 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:38,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 346 [2023-01-28 00:50:38,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:38,833 INFO L130 PetriNetUnfolder]: 109/262 cut-off events. [2023-01-28 00:50:38,833 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-01-28 00:50:38,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 262 events. 109/262 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1003 event pairs, 17 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 639. Up to 130 conditions per place. [2023-01-28 00:50:38,835 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 59 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2023-01-28 00:50:38,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 346 flow [2023-01-28 00:50:38,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 00:50:38,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 00:50:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1094 transitions. [2023-01-28 00:50:38,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161849710982659 [2023-01-28 00:50:38,838 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1094 transitions. [2023-01-28 00:50:38,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1094 transitions. [2023-01-28 00:50:38,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:38,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1094 transitions. [2023-01-28 00:50:38,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 109.4) internal successors, (1094), 10 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,843 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,843 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 61 flow. Second operand 10 states and 1094 transitions. [2023-01-28 00:50:38,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 346 flow [2023-01-28 00:50:38,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:50:38,845 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2023-01-28 00:50:38,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=160, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-01-28 00:50:38,845 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-01-28 00:50:38,845 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2023-01-28 00:50:38,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 103.61538461538461) internal successors, (1347), 13 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:38,846 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 00:50:38,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:50:38,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:38,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash 790807017, now seen corresponding path program 1 times [2023-01-28 00:50:38,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:38,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648596754] [2023-01-28 00:50:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:38,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:39,405 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 00:50:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648596754] [2023-01-28 00:50:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648596754] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:39,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:39,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:50:39,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481788359] [2023-01-28 00:50:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:39,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:50:39,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:39,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:50:39,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:50:39,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 346 [2023-01-28 00:50:39,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:39,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 346 [2023-01-28 00:50:39,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:39,566 INFO L130 PetriNetUnfolder]: 121/309 cut-off events. [2023-01-28 00:50:39,566 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-01-28 00:50:39,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 309 events. 121/309 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 33 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 940. Up to 107 conditions per place. [2023-01-28 00:50:39,567 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 57 selfloop transitions, 12 changer transitions 3/72 dead transitions. [2023-01-28 00:50:39,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 458 flow [2023-01-28 00:50:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:50:39,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:50:39,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2023-01-28 00:50:39,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3405587668593449 [2023-01-28 00:50:39,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2023-01-28 00:50:39,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2023-01-28 00:50:39,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:39,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2023-01-28 00:50:39,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,573 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 346.0) internal successors, (2422), 7 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,573 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 707 transitions. [2023-01-28 00:50:39,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 458 flow [2023-01-28 00:50:39,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:50:39,577 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 215 flow [2023-01-28 00:50:39,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-01-28 00:50:39,578 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2023-01-28 00:50:39,578 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 215 flow [2023-01-28 00:50:39,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:39,579 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 00:50:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:50:39,579 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 00:50:39,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash 88600491, now seen corresponding path program 4 times [2023-01-28 00:50:39,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:39,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790160536] [2023-01-28 00:50:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:39,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:41,115 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 00:50:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790160536] [2023-01-28 00:50:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790160536] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:41,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:41,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-28 00:50:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014664478] [2023-01-28 00:50:41,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:41,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 00:50:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 00:50:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-01-28 00:50:41,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 346 [2023-01-28 00:50:41,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 215 flow. Second operand has 15 states, 15 states have (on average 103.4) internal successors, (1551), 15 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:41,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:41,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 346 [2023-01-28 00:50:41,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:41,569 INFO L130 PetriNetUnfolder]: 120/314 cut-off events. [2023-01-28 00:50:41,569 INFO L131 PetriNetUnfolder]: For 505/505 co-relation queries the response was YES. [2023-01-28 00:50:41,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 314 events. 120/314 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1394 event pairs, 45 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1058. Up to 236 conditions per place. [2023-01-28 00:50:41,571 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 48 selfloop transitions, 7 changer transitions 22/77 dead transitions. [2023-01-28 00:50:41,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 541 flow [2023-01-28 00:50:41,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 00:50:41,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 00:50:41,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1187 transitions. [2023-01-28 00:50:41,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31187598528638993 [2023-01-28 00:50:41,574 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1187 transitions. [2023-01-28 00:50:41,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1187 transitions. [2023-01-28 00:50:41,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:41,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1187 transitions. [2023-01-28 00:50:41,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 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 00:50:41,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:41,580 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:41,580 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 215 flow. Second operand 11 states and 1187 transitions. [2023-01-28 00:50:41,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 541 flow [2023-01-28 00:50:41,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 508 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:41,583 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 224 flow [2023-01-28 00:50:41,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=224, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2023-01-28 00:50:41,583 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-01-28 00:50:41,583 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 224 flow [2023-01-28 00:50:41,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 103.4) internal successors, (1551), 15 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:41,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:41,584 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 00:50:41,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:50:41,584 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 00:50:41,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1896762687, now seen corresponding path program 5 times [2023-01-28 00:50:41,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:41,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026168301] [2023-01-28 00:50:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:41,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:42,414 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 00:50:42,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026168301] [2023-01-28 00:50:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026168301] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:42,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:42,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 00:50:42,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602464096] [2023-01-28 00:50:42,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:42,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 00:50:42,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:42,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 00:50:42,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-01-28 00:50:42,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 346 [2023-01-28 00:50:42,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 103.61538461538461) internal successors, (1347), 13 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:42,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 346 [2023-01-28 00:50:42,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:42,874 INFO L130 PetriNetUnfolder]: 118/321 cut-off events. [2023-01-28 00:50:42,874 INFO L131 PetriNetUnfolder]: For 554/554 co-relation queries the response was YES. [2023-01-28 00:50:42,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 321 events. 118/321 cut-off events. For 554/554 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1451 event pairs, 32 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 1122. Up to 188 conditions per place. [2023-01-28 00:50:42,876 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 64 selfloop transitions, 25 changer transitions 2/91 dead transitions. [2023-01-28 00:50:42,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 645 flow [2023-01-28 00:50:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 00:50:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 00:50:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1197 transitions. [2023-01-28 00:50:42,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31450341565948503 [2023-01-28 00:50:42,879 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1197 transitions. [2023-01-28 00:50:42,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1197 transitions. [2023-01-28 00:50:42,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:42,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1197 transitions. [2023-01-28 00:50:42,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.81818181818181) internal successors, (1197), 11 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,885 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,885 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 224 flow. Second operand 11 states and 1197 transitions. [2023-01-28 00:50:42,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 645 flow [2023-01-28 00:50:42,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 613 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-01-28 00:50:42,889 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 386 flow [2023-01-28 00:50:42,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=386, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-01-28 00:50:42,890 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-01-28 00:50:42,890 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 386 flow [2023-01-28 00:50:42,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 103.61538461538461) internal successors, (1347), 13 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:42,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:42,891 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 00:50:42,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:50:42,891 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-01-28 00:50:42,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1506625265, now seen corresponding path program 6 times [2023-01-28 00:50:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:42,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993240958] [2023-01-28 00:50:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:43,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:50:43,651 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 00:50:43,656 INFO L158 Benchmark]: Toolchain (without parser) took 19020.12ms. Allocated memory was 331.4MB in the beginning and 891.3MB in the end (delta: 559.9MB). Free memory was 269.9MB in the beginning and 444.0MB in the end (delta: -174.1MB). Peak memory consumption was 502.9MB. Max. memory is 16.0GB. [2023-01-28 00:50:43,656 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 331.4MB. Free memory is still 280.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:50:43,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 660.81ms. Allocated memory was 331.4MB in the beginning and 576.7MB in the end (delta: 245.4MB). Free memory was 269.9MB in the beginning and 512.1MB in the end (delta: -242.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.0GB. [2023-01-28 00:50:43,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.74ms. Allocated memory is still 576.7MB. Free memory was 512.1MB in the beginning and 509.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 00:50:43,656 INFO L158 Benchmark]: Boogie Preprocessor took 26.58ms. Allocated memory is still 576.7MB. Free memory was 509.0MB in the beginning and 505.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:50:43,656 INFO L158 Benchmark]: RCFGBuilder took 582.45ms. Allocated memory is still 576.7MB. Free memory was 505.8MB in the beginning and 480.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 00:50:43,657 INFO L158 Benchmark]: TraceAbstraction took 17682.21ms. Allocated memory was 576.7MB in the beginning and 891.3MB in the end (delta: 314.6MB). Free memory was 479.6MB in the beginning and 444.0MB in the end (delta: 35.7MB). Peak memory consumption was 465.6MB. Max. memory is 16.0GB. [2023-01-28 00:50:43,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 331.4MB. Free memory is still 280.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 660.81ms. Allocated memory was 331.4MB in the beginning and 576.7MB in the end (delta: 245.4MB). Free memory was 269.9MB in the beginning and 512.1MB in the end (delta: -242.3MB). Peak memory consumption was 37.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.74ms. Allocated memory is still 576.7MB. Free memory was 512.1MB in the beginning and 509.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.58ms. Allocated memory is still 576.7MB. Free memory was 509.0MB in the beginning and 505.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 582.45ms. Allocated memory is still 576.7MB. Free memory was 505.8MB in the beginning and 480.7MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 17682.21ms. Allocated memory was 576.7MB in the beginning and 891.3MB in the end (delta: 314.6MB). Free memory was 479.6MB in the beginning and 444.0MB in the end (delta: 35.7MB). Peak memory consumption was 465.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8s, 162 PlacesBefore, 36 PlacesAfterwards, 162 TransitionsBefore, 32 TransitionsAfterwards, 2392 CoEnabledTransitionPairs, 7 FixpointIterations, 98 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 172 TotalNumberOfCompositions, 5218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2366, independent: 2168, independent conditional: 0, independent unconditional: 2168, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1278, independent: 1230, independent conditional: 0, independent unconditional: 1230, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2366, independent: 938, independent conditional: 0, independent unconditional: 938, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 1278, unknown conditional: 0, unknown unconditional: 1278] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, 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 00:50:43,672 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...