/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/pthread/queue_ok_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:39:24,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:39:24,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:39:24,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-27 23:39:24,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:39:24,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:39:24,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:39:24,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:39:24,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:39:24,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:39:24,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:39:24,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:39:24,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:39:24,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:39:24,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:39:24,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:39:24,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:39:24,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:39:24,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:39:24,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:39:24,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:39:24,231 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:39:24,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:39:24,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:39:24,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:39:24,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:39:24,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:39:24,233 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:39:24,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:39:24,233 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:39:24,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:39:24,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:39:24,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:39:24,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:39:24,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:39:24,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:39:24,234 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:39:24,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:39:24,235 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:39:24,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:39:24,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:39:24,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:39:24,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:39:24,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:39:24,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:24,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:39:24,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:39:24,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:39:24,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:39:24,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:39:24,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:39:24,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:39:24,236 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:39:24,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:39:24,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:39:24,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:39:24,459 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:39:24,459 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:39:24,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-01-27 23:39:25,457 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:39:25,684 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:39:25,684 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i [2023-01-27 23:39:25,697 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682a88d39/0bb58cdbe8f14396b90646f292fe8193/FLAGb3a4cf4d3 [2023-01-27 23:39:25,706 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682a88d39/0bb58cdbe8f14396b90646f292fe8193 [2023-01-27 23:39:25,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:39:25,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:39:25,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:25,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:39:25,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:39:25,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:25" (1/1) ... [2023-01-27 23:39:25,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@410f6caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:25, skipping insertion in model container [2023-01-27 23:39:25,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:25" (1/1) ... [2023-01-27 23:39:25,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:39:25,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:39:26,023 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43272,43285] [2023-01-27 23:39:26,027 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43545,43558] [2023-01-27 23:39:26,038 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:26,047 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:39:26,087 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43272,43285] [2023-01-27 23:39:26,089 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i[43545,43558] [2023-01-27 23:39:26,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:26,135 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:39:26,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26 WrapperNode [2023-01-27 23:39:26,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:26,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:26,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:39:26,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:39:26,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,193 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2023-01-27 23:39:26,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:26,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:39:26,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:39:26,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:39:26,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,244 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:39:26,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:39:26,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:39:26,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:39:26,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (1/1) ... [2023-01-27 23:39:26,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:26,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:26,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:39:26,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:39:26,328 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:39:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:39:26,329 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:39:26,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:39:26,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:39:26,330 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:39:26,507 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:39:26,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:39:26,752 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:39:26,765 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:39:26,765 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:39:26,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:26 BoogieIcfgContainer [2023-01-27 23:39:26,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:39:26,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:39:26,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:39:26,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:39:26,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:39:25" (1/3) ... [2023-01-27 23:39:26,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23720c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:26, skipping insertion in model container [2023-01-27 23:39:26,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:26" (2/3) ... [2023-01-27 23:39:26,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23720c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:26, skipping insertion in model container [2023-01-27 23:39:26,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:26" (3/3) ... [2023-01-27 23:39:26,772 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2023-01-27 23:39:26,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:39:26,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:39:26,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:39:26,864 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:39:26,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 216 transitions, 448 flow [2023-01-27 23:39:26,938 INFO L130 PetriNetUnfolder]: 13/214 cut-off events. [2023-01-27 23:39:26,938 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:26,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 214 events. 13/214 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 359 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-27 23:39:26,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 216 transitions, 448 flow [2023-01-27 23:39:26,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 205 transitions, 419 flow [2023-01-27 23:39:26,955 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:39:26,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-27 23:39:26,968 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 205 transitions, 419 flow [2023-01-27 23:39:26,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 419 flow [2023-01-27 23:39:27,001 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-01-27 23:39:27,001 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:39:27,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 13/205 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 293 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 141. Up to 3 conditions per place. [2023-01-27 23:39:27,006 INFO L119 LiptonReduction]: Number of co-enabled transitions 9984 [2023-01-27 23:39:32,738 INFO L134 LiptonReduction]: Checked pairs total: 19772 [2023-01-27 23:39:32,738 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-01-27 23:39:32,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:39:32,760 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;@37399243, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:39:32,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 23:39:32,762 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-27 23:39:32,762 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:39:32,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:32,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-27 23:39:32,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:32,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:32,768 INFO L85 PathProgramCache]: Analyzing trace with hash 839, now seen corresponding path program 1 times [2023-01-27 23:39:32,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:32,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466048505] [2023-01-27 23:39:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:32,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:32,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466048505] [2023-01-27 23:39:32,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466048505] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:32,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:32,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-27 23:39:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659457805] [2023-01-27 23:39:32,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:32,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 23:39:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 23:39:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 23:39:32,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 402 [2023-01-27 23:39:32,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:32,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:32,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 402 [2023-01-27 23:39:32,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:33,076 INFO L130 PetriNetUnfolder]: 829/1341 cut-off events. [2023-01-27 23:39:33,076 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-01-27 23:39:33,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2685 conditions, 1341 events. 829/1341 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5736 event pairs, 621 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2519. Up to 1297 conditions per place. [2023-01-27 23:39:33,084 INFO L137 encePairwiseOnDemand]: 401/402 looper letters, 38 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-01-27 23:39:33,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 179 flow [2023-01-27 23:39:33,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 23:39:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 23:39:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 450 transitions. [2023-01-27 23:39:33,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597014925373134 [2023-01-27 23:39:33,099 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 450 transitions. [2023-01-27 23:39:33,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 450 transitions. [2023-01-27 23:39:33,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:33,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 450 transitions. [2023-01-27 23:39:33,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 225.0) internal successors, (450), 2 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,110 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,111 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 103 flow. Second operand 2 states and 450 transitions. [2023-01-27 23:39:33,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 179 flow [2023-01-27 23:39:33,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:39:33,115 INFO L231 Difference]: Finished difference. Result has 44 places, 45 transitions, 94 flow [2023-01-27 23:39:33,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=45} [2023-01-27 23:39:33,118 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-27 23:39:33,118 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 45 transitions, 94 flow [2023-01-27 23:39:33,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:33,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:33,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:39:33,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:33,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1319934340, now seen corresponding path program 1 times [2023-01-27 23:39:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87027121] [2023-01-27 23:39:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:33,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87027121] [2023-01-27 23:39:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87027121] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:33,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:39:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593882932] [2023-01-27 23:39:33,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:33,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 402 [2023-01-27 23:39:33,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 45 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:33,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 402 [2023-01-27 23:39:33,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:33,449 INFO L130 PetriNetUnfolder]: 248/490 cut-off events. [2023-01-27 23:39:33,449 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-27 23:39:33,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 490 events. 248/490 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2048 event pairs, 164 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 980. Up to 253 conditions per place. [2023-01-27 23:39:33,452 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 40 selfloop transitions, 2 changer transitions 8/53 dead transitions. [2023-01-27 23:39:33,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 209 flow [2023-01-27 23:39:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-27 23:39:33,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-27 23:39:33,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-27 23:39:33,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-27 23:39:33,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:33,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-27 23:39:33,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,460 INFO L175 Difference]: Start difference. First operand has 44 places, 45 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-27 23:39:33,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 209 flow [2023-01-27 23:39:33,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:39:33,461 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 94 flow [2023-01-27 23:39:33,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-01-27 23:39:33,463 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-01-27 23:39:33,463 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 94 flow [2023-01-27 23:39:33,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:33,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:33,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:39:33,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:33,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash -312369892, now seen corresponding path program 1 times [2023-01-27 23:39:33,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:33,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469030920] [2023-01-27 23:39:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469030920] [2023-01-27 23:39:33,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469030920] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:33,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:33,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:33,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369686040] [2023-01-27 23:39:33,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:33,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:33,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:33,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:33,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:33,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:39:33,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:33,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:39:33,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:33,623 INFO L130 PetriNetUnfolder]: 245/490 cut-off events. [2023-01-27 23:39:33,623 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-27 23:39:33,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 490 events. 245/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1755 event pairs, 155 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1020. Up to 357 conditions per place. [2023-01-27 23:39:33,625 INFO L137 encePairwiseOnDemand]: 398/402 looper letters, 48 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-27 23:39:33,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 226 flow [2023-01-27 23:39:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-01-27 23:39:33,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356550580431177 [2023-01-27 23:39:33,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-01-27 23:39:33,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-01-27 23:39:33,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:33,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-01-27 23:39:33,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,632 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 94 flow. Second operand 3 states and 646 transitions. [2023-01-27 23:39:33,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 226 flow [2023-01-27 23:39:33,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:39:33,633 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 109 flow [2023-01-27 23:39:33,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-01-27 23:39:33,634 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2023-01-27 23:39:33,634 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 109 flow [2023-01-27 23:39:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:33,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:33,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:39:33,635 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:33,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash -824947493, now seen corresponding path program 1 times [2023-01-27 23:39:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:33,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057215319] [2023-01-27 23:39:33,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:33,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057215319] [2023-01-27 23:39:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057215319] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:33,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:33,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:33,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053851701] [2023-01-27 23:39:33,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:33,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:33,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 402 [2023-01-27 23:39:33,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:33,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 402 [2023-01-27 23:39:33,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:33,827 INFO L130 PetriNetUnfolder]: 187/394 cut-off events. [2023-01-27 23:39:33,827 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-27 23:39:33,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 394 events. 187/394 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1256 event pairs, 12 based on Foata normal form. 42/410 useless extension candidates. Maximal degree in co-relation 865. Up to 341 conditions per place. [2023-01-27 23:39:33,829 INFO L137 encePairwiseOnDemand]: 399/402 looper letters, 43 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-01-27 23:39:33,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 216 flow [2023-01-27 23:39:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:33,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-01-27 23:39:33,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207296849087893 [2023-01-27 23:39:33,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-01-27 23:39:33,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-01-27 23:39:33,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:33,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-01-27 23:39:33,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 402.0) internal successors, (1608), 4 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,841 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 109 flow. Second operand 3 states and 628 transitions. [2023-01-27 23:39:33,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 216 flow [2023-01-27 23:39:33,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:33,843 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 112 flow [2023-01-27 23:39:33,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-01-27 23:39:33,845 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-01-27 23:39:33,845 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 112 flow [2023-01-27 23:39:33,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:33,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:33,846 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, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:33,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:39:33,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:33,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash 818194887, now seen corresponding path program 1 times [2023-01-27 23:39:33,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:33,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417975805] [2023-01-27 23:39:33,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:33,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417975805] [2023-01-27 23:39:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417975805] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:33,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598378884] [2023-01-27 23:39:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:33,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:33,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:33,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:39:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:34,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 23:39:34,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:34,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:34,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598378884] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:34,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:34,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-27 23:39:34,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271724786] [2023-01-27 23:39:34,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:34,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:39:34,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:34,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:39:34,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:39:34,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:39:34,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:34,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:34,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:39:34,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:34,280 INFO L130 PetriNetUnfolder]: 246/531 cut-off events. [2023-01-27 23:39:34,280 INFO L131 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2023-01-27 23:39:34,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 531 events. 246/531 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1513 event pairs, 100 based on Foata normal form. 12/507 useless extension candidates. Maximal degree in co-relation 1194. Up to 238 conditions per place. [2023-01-27 23:39:34,282 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 70 selfloop transitions, 10 changer transitions 1/84 dead transitions. [2023-01-27 23:39:34,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 370 flow [2023-01-27 23:39:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:39:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:39:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1271 transitions. [2023-01-27 23:39:34,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269485903814262 [2023-01-27 23:39:34,285 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1271 transitions. [2023-01-27 23:39:34,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1271 transitions. [2023-01-27 23:39:34,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:34,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1271 transitions. [2023-01-27 23:39:34,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.83333333333334) internal successors, (1271), 6 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:34,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:34,293 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 402.0) internal successors, (2814), 7 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:34,293 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 112 flow. Second operand 6 states and 1271 transitions. [2023-01-27 23:39:34,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 370 flow [2023-01-27 23:39:34,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:34,296 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 170 flow [2023-01-27 23:39:34,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-01-27 23:39:34,297 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2023-01-27 23:39:34,298 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 170 flow [2023-01-27 23:39:34,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 203.57142857142858) internal successors, (1425), 7 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:34,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:34,299 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:34,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 23:39:34,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:34,523 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:34,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1030938622, now seen corresponding path program 2 times [2023-01-27 23:39:34,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:34,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565941109] [2023-01-27 23:39:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565941109] [2023-01-27 23:39:34,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565941109] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979326748] [2023-01-27 23:39:34,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:39:34,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:34,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:34,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:34,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:39:34,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:39:34,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:34,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 23:39:34,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:34,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979326748] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:34,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-01-27 23:39:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814322708] [2023-01-27 23:39:34,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:34,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:39:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:39:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:39:34,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:39:34,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:34,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:34,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:39:34,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:35,254 INFO L130 PetriNetUnfolder]: 423/934 cut-off events. [2023-01-27 23:39:35,254 INFO L131 PetriNetUnfolder]: For 328/328 co-relation queries the response was YES. [2023-01-27 23:39:35,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 934 events. 423/934 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2534 event pairs, 91 based on Foata normal form. 24/900 useless extension candidates. Maximal degree in co-relation 2357. Up to 217 conditions per place. [2023-01-27 23:39:35,257 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 136 selfloop transitions, 22 changer transitions 0/161 dead transitions. [2023-01-27 23:39:35,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 161 transitions, 836 flow [2023-01-27 23:39:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:39:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:39:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2540 transitions. [2023-01-27 23:39:35,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265339966832504 [2023-01-27 23:39:35,264 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2540 transitions. [2023-01-27 23:39:35,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2540 transitions. [2023-01-27 23:39:35,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:35,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2540 transitions. [2023-01-27 23:39:35,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 211.66666666666666) internal successors, (2540), 12 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:35,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:35,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 402.0) internal successors, (5226), 13 states have internal predecessors, (5226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:35,276 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 170 flow. Second operand 12 states and 2540 transitions. [2023-01-27 23:39:35,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 161 transitions, 836 flow [2023-01-27 23:39:35,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 161 transitions, 797 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-01-27 23:39:35,283 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 320 flow [2023-01-27 23:39:35,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-01-27 23:39:35,285 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 23 predicate places. [2023-01-27 23:39:35,285 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 320 flow [2023-01-27 23:39:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 203.84615384615384) internal successors, (2650), 13 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:35,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:35,286 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:35,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 23:39:35,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-27 23:39:35,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:35,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash -122187422, now seen corresponding path program 3 times [2023-01-27 23:39:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:35,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607590832] [2023-01-27 23:39:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:35,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:35,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:35,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607590832] [2023-01-27 23:39:35,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607590832] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:35,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230703537] [2023-01-27 23:39:35,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:39:35,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:35,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:35,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:35,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:39:36,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-27 23:39:36,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:36,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-27 23:39:36,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:36,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-27 23:39:36,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:36,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-01-27 23:39:36,602 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:39:36,608 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:39:36,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:39:36,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:36,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:39:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-01-27 23:39:36,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:36,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:39:36,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 42 [2023-01-27 23:39:36,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:39:36,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 77 [2023-01-27 23:39:36,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-01-27 23:39:36,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-01-27 23:39:36,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:39:36,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2023-01-27 23:39:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 76 proven. 45 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2023-01-27 23:39:36,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230703537] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:36,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:36,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2023-01-27 23:39:36,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837719024] [2023-01-27 23:39:36,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:36,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-27 23:39:36,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:36,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-27 23:39:36,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=476, Unknown=5, NotChecked=0, Total=600 [2023-01-27 23:39:37,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 402 [2023-01-27 23:39:37,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 320 flow. Second operand has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:37,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:37,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 402 [2023-01-27 23:39:37,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:38,261 INFO L130 PetriNetUnfolder]: 821/1800 cut-off events. [2023-01-27 23:39:38,261 INFO L131 PetriNetUnfolder]: For 1316/1316 co-relation queries the response was YES. [2023-01-27 23:39:38,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4861 conditions, 1800 events. 821/1800 cut-off events. For 1316/1316 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 6406 event pairs, 57 based on Foata normal form. 8/1737 useless extension candidates. Maximal degree in co-relation 4844. Up to 285 conditions per place. [2023-01-27 23:39:38,268 INFO L137 encePairwiseOnDemand]: 390/402 looper letters, 267 selfloop transitions, 110 changer transitions 1/380 dead transitions. [2023-01-27 23:39:38,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 380 transitions, 2040 flow [2023-01-27 23:39:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-27 23:39:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-27 23:39:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6885 transitions. [2023-01-27 23:39:38,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3982992016660882 [2023-01-27 23:39:38,280 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6885 transitions. [2023-01-27 23:39:38,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6885 transitions. [2023-01-27 23:39:38,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:38,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6885 transitions. [2023-01-27 23:39:38,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 160.11627906976744) internal successors, (6885), 43 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:38,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:38,307 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 402.0) internal successors, (17688), 44 states have internal predecessors, (17688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:38,307 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 320 flow. Second operand 43 states and 6885 transitions. [2023-01-27 23:39:38,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 380 transitions, 2040 flow [2023-01-27 23:39:38,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 380 transitions, 2025 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:39:38,315 INFO L231 Difference]: Finished difference. Result has 134 places, 163 transitions, 1172 flow [2023-01-27 23:39:38,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1172, PETRI_PLACES=134, PETRI_TRANSITIONS=163} [2023-01-27 23:39:38,315 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 87 predicate places. [2023-01-27 23:39:38,315 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 163 transitions, 1172 flow [2023-01-27 23:39:38,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 156.6) internal successors, (3915), 25 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:38,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:38,317 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:38,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 23:39:38,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:38,523 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:38,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -161773555, now seen corresponding path program 1 times [2023-01-27 23:39:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344869494] [2023-01-27 23:39:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:38,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:38,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344869494] [2023-01-27 23:39:38,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344869494] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:38,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745019934] [2023-01-27 23:39:38,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:38,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:38,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:38,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:38,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:39:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-27 23:39:39,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:39,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:39,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745019934] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:39,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:39,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-01-27 23:39:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697374863] [2023-01-27 23:39:39,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:39,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-27 23:39:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-27 23:39:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2023-01-27 23:39:39,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:39:39,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 163 transitions, 1172 flow. Second operand has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:39,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:39,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:39:39,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:40,056 INFO L130 PetriNetUnfolder]: 1371/3210 cut-off events. [2023-01-27 23:39:40,056 INFO L131 PetriNetUnfolder]: For 28289/28289 co-relation queries the response was YES. [2023-01-27 23:39:40,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14004 conditions, 3210 events. 1371/3210 cut-off events. For 28289/28289 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 11582 event pairs, 136 based on Foata normal form. 104/3290 useless extension candidates. Maximal degree in co-relation 13961. Up to 452 conditions per place. [2023-01-27 23:39:40,076 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 413 selfloop transitions, 75 changer transitions 0/491 dead transitions. [2023-01-27 23:39:40,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 491 transitions, 5503 flow [2023-01-27 23:39:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-27 23:39:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-27 23:39:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 5501 transitions. [2023-01-27 23:39:40,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263107539226942 [2023-01-27 23:39:40,085 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 5501 transitions. [2023-01-27 23:39:40,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 5501 transitions. [2023-01-27 23:39:40,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:40,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 5501 transitions. [2023-01-27 23:39:40,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 211.57692307692307) internal successors, (5501), 26 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:40,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:40,102 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 402.0) internal successors, (10854), 27 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:40,102 INFO L175 Difference]: Start difference. First operand has 134 places, 163 transitions, 1172 flow. Second operand 26 states and 5501 transitions. [2023-01-27 23:39:40,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 491 transitions, 5503 flow [2023-01-27 23:39:40,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 491 transitions, 5316 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-01-27 23:39:40,195 INFO L231 Difference]: Finished difference. Result has 162 places, 201 transitions, 1742 flow [2023-01-27 23:39:40,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1742, PETRI_PLACES=162, PETRI_TRANSITIONS=201} [2023-01-27 23:39:40,196 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 115 predicate places. [2023-01-27 23:39:40,196 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 201 transitions, 1742 flow [2023-01-27 23:39:40,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 204.25925925925927) internal successors, (5515), 27 states have internal predecessors, (5515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:40,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:40,198 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 24, 24, 24, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:40,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 23:39:40,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:40,404 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:40,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash -346057744, now seen corresponding path program 2 times [2023-01-27 23:39:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:40,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686397698] [2023-01-27 23:39:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:41,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:41,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686397698] [2023-01-27 23:39:41,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686397698] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:41,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304247899] [2023-01-27 23:39:41,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:39:41,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:41,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:41,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:41,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:39:41,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:39:41,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:41,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-27 23:39:41,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:41,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 1734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:42,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304247899] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:42,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:42,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 53 [2023-01-27 23:39:42,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292594115] [2023-01-27 23:39:42,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:42,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-01-27 23:39:42,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:42,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-01-27 23:39:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-01-27 23:39:42,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:39:42,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 201 transitions, 1742 flow. Second operand has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:42,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:42,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:39:42,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:44,940 INFO L130 PetriNetUnfolder]: 2697/6382 cut-off events. [2023-01-27 23:39:44,940 INFO L131 PetriNetUnfolder]: For 100006/100006 co-relation queries the response was YES. [2023-01-27 23:39:44,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29607 conditions, 6382 events. 2697/6382 cut-off events. For 100006/100006 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 23230 event pairs, 136 based on Foata normal form. 208/6566 useless extension candidates. Maximal degree in co-relation 29551. Up to 1128 conditions per place. [2023-01-27 23:39:44,982 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 829 selfloop transitions, 153 changer transitions 0/985 dead transitions. [2023-01-27 23:39:44,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 985 transitions, 11795 flow [2023-01-27 23:39:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-01-27 23:39:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-01-27 23:39:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 11000 transitions. [2023-01-27 23:39:44,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262150784538844 [2023-01-27 23:39:44,992 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 11000 transitions. [2023-01-27 23:39:44,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 11000 transitions. [2023-01-27 23:39:44,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:44,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 11000 transitions. [2023-01-27 23:39:45,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 211.53846153846155) internal successors, (11000), 52 states have internal predecessors, (11000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:45,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:45,023 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 402.0) internal successors, (21306), 53 states have internal predecessors, (21306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:45,023 INFO L175 Difference]: Start difference. First operand has 162 places, 201 transitions, 1742 flow. Second operand 52 states and 11000 transitions. [2023-01-27 23:39:45,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 985 transitions, 11795 flow [2023-01-27 23:39:45,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 985 transitions, 11732 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-01-27 23:39:45,157 INFO L231 Difference]: Finished difference. Result has 229 places, 281 transitions, 3410 flow [2023-01-27 23:39:45,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3410, PETRI_PLACES=229, PETRI_TRANSITIONS=281} [2023-01-27 23:39:45,158 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 182 predicate places. [2023-01-27 23:39:45,158 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 281 transitions, 3410 flow [2023-01-27 23:39:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 204.41509433962264) internal successors, (10834), 53 states have internal predecessors, (10834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:45,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:45,161 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 50, 50, 50, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:45,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 23:39:45,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:45,368 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:39:45,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash 890330880, now seen corresponding path program 3 times [2023-01-27 23:39:45,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:45,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848932756] [2023-01-27 23:39:45,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:45,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 0 proven. 7675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:48,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848932756] [2023-01-27 23:39:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848932756] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:39:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772397740] [2023-01-27 23:39:48,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:39:48,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:39:48,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:48,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:39:48,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 23:39:49,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-27 23:39:49,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:39:49,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 70 conjunts are in the unsatisfiable core [2023-01-27 23:39:49,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:39:50,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:39:50,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:50,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:50,853 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 23:39:50,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-01-27 23:39:50,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-01-27 23:39:51,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-01-27 23:39:51,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:39:51,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 23:39:51,162 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-01-27 23:39:51,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 23 [2023-01-27 23:39:51,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-01-27 23:39:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 644 proven. 245 refuted. 0 times theorem prover too weak. 6786 trivial. 0 not checked. [2023-01-27 23:39:51,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:39:51,470 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1))))) is different from false [2023-01-27 23:39:51,475 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (store .cse2 .cse3 (+ (select .cse2 .cse3) 1)))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2175)) .cse1))))) is different from false [2023-01-27 23:39:51,565 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse4 (select .cse2 .cse3))) (or (forall ((v_ArrVal_2175 Int) (v_ArrVal_2169 Int) (v_ArrVal_2173 (Array Int Int))) (not (= 400 (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1))))) (= 400 .cse4)))) is different from false [2023-01-27 23:39:51,580 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2175 Int) (v_ArrVal_2167 Int) (v_ArrVal_2169 Int) (v_ArrVal_2173 (Array Int Int))) (let ((.cse2 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2167)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (let ((.cse4 (select .cse2 .cse3))) (or (not (= (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2169) .cse3 (+ .cse4 1))) |c_~#stored_elements~0.base| v_ArrVal_2173) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2175)) .cse1)) 400)) (= .cse4 400))))) is different from false [2023-01-27 23:39:51,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:39:51,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 163 [2023-01-27 23:39:51,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:39:51,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 258 [2023-01-27 23:39:51,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 85 [2023-01-27 23:39:51,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2023-01-27 23:39:51,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-01-27 23:39:51,938 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:39:51,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 107 [2023-01-27 23:39:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7675 backedges. 356 proven. 338 refuted. 0 times theorem prover too weak. 6786 trivial. 195 not checked. [2023-01-27 23:39:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772397740] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:39:52,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:39:52,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 11, 14] total 76 [2023-01-27 23:39:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915782641] [2023-01-27 23:39:52,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:39:52,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-01-27 23:39:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:52,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-01-27 23:39:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1499, Invalid=3609, Unknown=20, NotChecked=572, Total=5700 [2023-01-27 23:39:52,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 402 [2023-01-27 23:39:52,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 281 transitions, 3410 flow. Second operand has 76 states, 76 states have (on average 155.18421052631578) internal successors, (11794), 76 states have internal predecessors, (11794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:39:52,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:52,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 402 [2023-01-27 23:39:52,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:41:16,943 INFO L130 PetriNetUnfolder]: 5887/13489 cut-off events. [2023-01-27 23:41:16,943 INFO L131 PetriNetUnfolder]: For 195853/195853 co-relation queries the response was YES. [2023-01-27 23:41:16,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68092 conditions, 13489 events. 5887/13489 cut-off events. For 195853/195853 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 63435 event pairs, 213 based on Foata normal form. 408/13861 useless extension candidates. Maximal degree in co-relation 68009. Up to 2163 conditions per place. [2023-01-27 23:41:17,038 INFO L137 encePairwiseOnDemand]: 386/402 looper letters, 2010 selfloop transitions, 1717 changer transitions 1/3730 dead transitions. [2023-01-27 23:41:17,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 801 places, 3730 transitions, 36319 flow [2023-01-27 23:41:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 573 states. [2023-01-27 23:41:17,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2023-01-27 23:41:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 89210 transitions. [2023-01-27 23:41:17,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38728695093468085 [2023-01-27 23:41:17,098 INFO L72 ComplementDD]: Start complementDD. Operand 573 states and 89210 transitions. [2023-01-27 23:41:17,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 573 states and 89210 transitions. [2023-01-27 23:41:17,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:41:17,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 573 states and 89210 transitions. [2023-01-27 23:41:17,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 574 states, 573 states have (on average 155.68935427574172) internal successors, (89210), 573 states have internal predecessors, (89210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:17,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 574 states, 574 states have (on average 402.0) internal successors, (230748), 574 states have internal predecessors, (230748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:17,389 INFO L81 ComplementDD]: Finished complementDD. Result has 574 states, 574 states have (on average 402.0) internal successors, (230748), 574 states have internal predecessors, (230748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:17,390 INFO L175 Difference]: Start difference. First operand has 229 places, 281 transitions, 3410 flow. Second operand 573 states and 89210 transitions. [2023-01-27 23:41:17,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 801 places, 3730 transitions, 36319 flow [2023-01-27 23:41:17,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 778 places, 3730 transitions, 36100 flow, removed 0 selfloop flow, removed 23 redundant places. [2023-01-27 23:41:17,896 INFO L231 Difference]: Finished difference. Result has 984 places, 1957 transitions, 30293 flow [2023-01-27 23:41:17,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=3242, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=573, PETRI_FLOW=30293, PETRI_PLACES=984, PETRI_TRANSITIONS=1957} [2023-01-27 23:41:17,897 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 937 predicate places. [2023-01-27 23:41:17,897 INFO L495 AbstractCegarLoop]: Abstraction has has 984 places, 1957 transitions, 30293 flow [2023-01-27 23:41:17,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 155.18421052631578) internal successors, (11794), 76 states have internal predecessors, (11794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:41:17,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:41:17,899 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 51, 51, 51, 38, 38, 38, 38, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:41:17,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 23:41:18,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:18,106 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:41:18,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:41:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1940408699, now seen corresponding path program 4 times [2023-01-27 23:41:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:41:18,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708901407] [2023-01-27 23:41:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:41:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:41:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:41:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:41:20,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:41:20,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708901407] [2023-01-27 23:41:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708901407] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:41:20,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903586432] [2023-01-27 23:41:20,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:41:20,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:41:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:41:20,719 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:41:20,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 23:43:11,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:43:11,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:43:11,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 53 conjunts are in the unsatisfiable core [2023-01-27 23:43:11,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:43:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:12,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:43:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 8691 backedges. 0 proven. 8691 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:43:14,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903586432] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:43:14,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:43:14,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2023-01-27 23:43:14,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865408124] [2023-01-27 23:43:14,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:43:14,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2023-01-27 23:43:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:43:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2023-01-27 23:43:14,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2023-01-27 23:43:14,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 402 [2023-01-27 23:43:14,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 984 places, 1957 transitions, 30293 flow. Second operand has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:43:14,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:43:14,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 402 [2023-01-27 23:43:14,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:43:52,042 INFO L130 PetriNetUnfolder]: 10502/25712 cut-off events. [2023-01-27 23:43:52,043 INFO L131 PetriNetUnfolder]: For 17220265/17220265 co-relation queries the response was YES. [2023-01-27 23:43:52,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669987 conditions, 25712 events. 10502/25712 cut-off events. For 17220265/17220265 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 125398 event pairs, 395 based on Foata normal form. 848/26524 useless extension candidates. Maximal degree in co-relation 669697. Up to 7141 conditions per place. [2023-01-27 23:43:52,745 INFO L137 encePairwiseOnDemand]: 397/402 looper letters, 3933 selfloop transitions, 522 changer transitions 0/4458 dead transitions. [2023-01-27 23:43:52,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1089 places, 4458 transitions, 124707 flow [2023-01-27 23:43:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-01-27 23:43:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-01-27 23:43:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 22421 transitions. [2023-01-27 23:43:52,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261663381207171 [2023-01-27 23:43:52,756 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 22421 transitions. [2023-01-27 23:43:52,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 22421 transitions. [2023-01-27 23:43:52,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:43:52,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 22421 transitions. [2023-01-27 23:43:52,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 211.5188679245283) internal successors, (22421), 106 states have internal predecessors, (22421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:43:52,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:43:52,801 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 402.0) internal successors, (43014), 107 states have internal predecessors, (43014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:43:52,801 INFO L175 Difference]: Start difference. First operand has 984 places, 1957 transitions, 30293 flow. Second operand 106 states and 22421 transitions. [2023-01-27 23:43:52,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1089 places, 4458 transitions, 124707 flow [2023-01-27 23:44:09,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 986 places, 4458 transitions, 93648 flow, removed 12901 selfloop flow, removed 103 redundant places. [2023-01-27 23:44:09,533 INFO L231 Difference]: Finished difference. Result has 1040 places, 2221 transitions, 20436 flow [2023-01-27 23:44:09,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=14501, PETRI_DIFFERENCE_MINUEND_PLACES=881, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=20436, PETRI_PLACES=1040, PETRI_TRANSITIONS=2221} [2023-01-27 23:44:09,535 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 993 predicate places. [2023-01-27 23:44:09,535 INFO L495 AbstractCegarLoop]: Abstraction has has 1040 places, 2221 transitions, 20436 flow [2023-01-27 23:44:09,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 204.69158878504672) internal successors, (21902), 107 states have internal predecessors, (21902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:44:09,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:44:09,538 INFO L208 CegarLoopForPetriNet]: trace histogram [104, 104, 104, 104, 77, 77, 77, 77, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:44:09,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 23:44:09,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:44:09,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 23:44:09,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:44:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash 116668732, now seen corresponding path program 5 times [2023-01-27 23:44:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:44:09,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042244804] [2023-01-27 23:44:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:44:09,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:44:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:44:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 0 proven. 36364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:44:18,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:44:18,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042244804] [2023-01-27 23:44:18,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042244804] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:44:18,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768347165] [2023-01-27 23:44:18,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 23:44:18,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:44:18,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:44:18,946 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:44:18,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 23:44:20,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-01-27 23:44:20,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:44:20,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 195 conjunts are in the unsatisfiable core [2023-01-27 23:44:20,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:44:20,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-01-27 23:44:21,057 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:44:21,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 38 [2023-01-27 23:44:21,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:44:21,249 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-01-27 23:44:21,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2023-01-27 23:44:21,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:21,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:44:21,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2023-01-27 23:44:21,577 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:44:21,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2023-01-27 23:44:21,764 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:44:21,773 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-01-27 23:44:21,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2023-01-27 23:44:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:21,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:44:22,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2023-01-27 23:44:22,199 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:44:22,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 67 [2023-01-27 23:44:22,401 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:44:22,410 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-01-27 23:44:22,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2023-01-27 23:44:22,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:22,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:44:22,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2023-01-27 23:44:22,882 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2023-01-27 23:44:22,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 67 [2023-01-27 23:44:23,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:44:23,113 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-01-27 23:44:23,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2023-01-27 23:44:23,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:23,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2023-01-27 23:44:23,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-01-27 23:44:23,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:23,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-27 23:44:23,595 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:44:23,602 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:44:23,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:44:23,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:23,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:44:23,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-27 23:44:23,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:23,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-27 23:44:24,095 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:44:24,101 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:44:24,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:44:24,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:24,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:44:24,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-27 23:44:24,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:24,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2023-01-27 23:44:24,556 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-27 23:44:24,560 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2023-01-27 23:44:24,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2023-01-27 23:44:24,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:44:24,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:44:24,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-01-27 23:44:24,848 INFO L321 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-01-27 23:44:24,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2023-01-27 23:44:24,993 INFO L321 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2023-01-27 23:44:24,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 30 [2023-01-27 23:44:25,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-01-27 23:44:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 36364 backedges. 12034 proven. 119 refuted. 0 times theorem prover too weak. 24211 trivial. 0 not checked. [2023-01-27 23:44:25,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-01-27 23:53:37,745 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:53:37,745 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 23:53:38,569 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 23:53:38,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 23:53:38,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-27 23:53:38,770 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. [2023-01-27 23:53:38,771 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-27 23:53:38,772 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 23:53:38,772 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 23:53:38,772 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-27 23:53:38,772 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 1, 1, 1, 1] [2023-01-27 23:53:38,775 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:53:38,775 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:53:38,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:53:38 BasicIcfg [2023-01-27 23:53:38,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:53:38,790 INFO L158 Benchmark]: Toolchain (without parser) took 853067.29ms. Allocated memory was 434.1MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 376.9MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-01-27 23:53:38,790 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 308.3MB. Free memory is still 253.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:53:38,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 423.08ms. Allocated memory is still 434.1MB. Free memory was 376.7MB in the beginning and 347.0MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-27 23:53:38,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.48ms. Allocated memory is still 434.1MB. Free memory was 347.0MB in the beginning and 344.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:53:38,791 INFO L158 Benchmark]: Boogie Preprocessor took 64.88ms. Allocated memory is still 434.1MB. Free memory was 344.2MB in the beginning and 394.1MB in the end (delta: -49.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.0GB. [2023-01-27 23:53:38,791 INFO L158 Benchmark]: RCFGBuilder took 507.55ms. Allocated memory is still 434.1MB. Free memory was 394.1MB in the beginning and 372.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 23:53:38,792 INFO L158 Benchmark]: TraceAbstraction took 852008.12ms. Allocated memory was 434.1MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 372.1MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. [2023-01-27 23:53:38,792 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 308.3MB. Free memory is still 253.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 423.08ms. Allocated memory is still 434.1MB. Free memory was 376.7MB in the beginning and 347.0MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.48ms. Allocated memory is still 434.1MB. Free memory was 347.0MB in the beginning and 344.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 64.88ms. Allocated memory is still 434.1MB. Free memory was 344.2MB in the beginning and 394.1MB in the end (delta: -49.9MB). Peak memory consumption was 9.6MB. Max. memory is 16.0GB. * RCFGBuilder took 507.55ms. Allocated memory is still 434.1MB. Free memory was 394.1MB in the beginning and 372.1MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 852008.12ms. Allocated memory was 434.1MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 372.1MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8s, 199 PlacesBefore, 47 PlacesAfterwards, 205 TransitionsBefore, 47 TransitionsAfterwards, 9984 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 186 TotalNumberOfCompositions, 19772 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9519, independent: 9080, independent conditional: 0, independent unconditional: 9080, dependent: 439, dependent conditional: 0, dependent unconditional: 439, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5401, independent: 5319, independent conditional: 0, independent unconditional: 5319, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9519, independent: 3761, independent conditional: 0, independent unconditional: 3761, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 5401, unknown conditional: 0, unknown unconditional: 5401] , Statistics on independence cache: Total cache size (in pairs): 268, Positive cache size: 233, Positive conditional cache size: 0, Positive unconditional cache size: 233, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1033]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1049]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1052]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - TimeoutResultAtElement [Line: 1053]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 826 with TraceHistMax 104,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 167 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 327 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 851.9s, OverallIterations: 12, TraceHistogramMax: 104, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 146.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12151 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12151 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 14397 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1983 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5869 IncrementalHoareTripleChecker+Invalid, 22249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1983 mSolverCounterUnsat, 1 mSDtfsCounter, 5869 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4306 GetRequests, 2993 SyntacticMatches, 411 SemanticMatches, 902 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 338694 ImplicationChecksByTransitivity, 78.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30293occurred in iteration=10, InterpolantAutomatonStates: 829, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 112.8s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 2615 NumberOfCodeBlocks, 2221 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 3867 ConstructedInterpolants, 14 QuantifiedInterpolants, 15456 SizeOfPredicates, 32 NumberOfNonLiveVariables, 6392 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 15133/56455 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown