/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:24:04,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:24:04,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:24:04,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:24:04,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:24:04,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:24:04,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:24:04,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:24:04,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:24:04,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:24:04,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:24:04,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:24:04,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:24:04,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:24:04,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:24:04,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:24:04,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:24:04,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:24:04,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:24:04,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:24:04,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:24:04,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:24:04,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:24:04,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:24:04,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:24:04,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:24:04,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:24:04,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:24:04,323 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 23:24:04,342 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:24:04,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:24:04,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:24:04,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:24:04,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:24:04,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:24:04,345 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:24:04,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:24:04,345 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:24:04,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:24:04,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:24:04,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:24:04,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:24:04,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:24:04,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:24:04,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:24:04,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:24:04,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:24:04,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:24:04,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:24:04,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:24:04,347 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 23:24:04,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:24:04,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:24:04,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:24:04,504 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:24:04,505 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:24:04,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-01-27 23:24:05,370 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:24:05,602 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:24:05,602 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2023-01-27 23:24:05,610 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00836ed48/7059e283a5eb43309a75f0645d913f5f/FLAGdaf369f46 [2023-01-27 23:24:05,618 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00836ed48/7059e283a5eb43309a75f0645d913f5f [2023-01-27 23:24:05,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:24:05,620 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:24:05,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:24:05,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:24:05,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:24:05,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:05,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d03fafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05, skipping insertion in model container [2023-01-27 23:24:05,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:05,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:24:05,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:24:05,906 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-deagle/arithmetic_prog_ok.i[39757,39770] [2023-01-27 23:24:05,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:24:05,922 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:24:05,956 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-deagle/arithmetic_prog_ok.i[39757,39770] [2023-01-27 23:24:05,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:24:05,993 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:24:05,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05 WrapperNode [2023-01-27 23:24:05,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:24:05,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:24:05,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:24:05,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:24:05,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,040 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2023-01-27 23:24:06,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:24:06,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:24:06,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:24:06,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:24:06,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,067 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:24:06,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:24:06,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:24:06,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:24:06,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (1/1) ... [2023-01-27 23:24:06,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:24:06,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:06,097 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 23:24:06,116 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 23:24:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:24:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:24:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-01-27 23:24:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:24:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:24:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:24:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:24:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:24:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:24:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:24:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:24:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:24:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:24:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:24:06,127 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 23:24:06,213 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:24:06,214 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:24:06,378 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:24:06,384 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:24:06,384 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 23:24:06,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:24:06 BoogieIcfgContainer [2023-01-27 23:24:06,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:24:06,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:24:06,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:24:06,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:24:06,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:24:05" (1/3) ... [2023-01-27 23:24:06,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611cb940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:24:06, skipping insertion in model container [2023-01-27 23:24:06,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:24:05" (2/3) ... [2023-01-27 23:24:06,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611cb940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:24:06, skipping insertion in model container [2023-01-27 23:24:06,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:24:06" (3/3) ... [2023-01-27 23:24:06,390 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-01-27 23:24:06,401 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:24:06,401 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:24:06,401 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:24:06,476 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:24:06,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 131 transitions, 278 flow [2023-01-27 23:24:06,550 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2023-01-27 23:24:06,550 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:24:06,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 129 events. 10/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 82. Up to 3 conditions per place. [2023-01-27 23:24:06,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 131 transitions, 278 flow [2023-01-27 23:24:06,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 118 transitions, 248 flow [2023-01-27 23:24:06,559 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:24:06,568 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-27 23:24:06,569 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 118 transitions, 248 flow [2023-01-27 23:24:06,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 248 flow [2023-01-27 23:24:06,588 INFO L130 PetriNetUnfolder]: 8/118 cut-off events. [2023-01-27 23:24:06,588 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:24:06,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 118 events. 8/118 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-01-27 23:24:06,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 1922 [2023-01-27 23:24:10,698 INFO L134 LiptonReduction]: Checked pairs total: 4363 [2023-01-27 23:24:10,698 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-01-27 23:24:10,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:24:10,742 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;@1d8ac6ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:24:10,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:24:10,757 INFO L130 PetriNetUnfolder]: 5/29 cut-off events. [2023-01-27 23:24:10,757 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:24:10,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:10,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:10,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:10,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash -373663314, now seen corresponding path program 1 times [2023-01-27 23:24:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:10,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369223288] [2023-01-27 23:24:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:10,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:11,014 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 23:24:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:11,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369223288] [2023-01-27 23:24:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369223288] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:24:11,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:24:11,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:24:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035389572] [2023-01-27 23:24:11,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:24:11,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:24:11,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:24:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:24:11,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-27 23:24:11,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 23:24:11,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:11,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-27 23:24:11,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:11,148 INFO L130 PetriNetUnfolder]: 219/470 cut-off events. [2023-01-27 23:24:11,149 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-27 23:24:11,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 470 events. 219/470 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2196 event pairs, 87 based on Foata normal form. 28/432 useless extension candidates. Maximal degree in co-relation 772. Up to 225 conditions per place. [2023-01-27 23:24:11,152 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 34 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-27 23:24:11,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 43 transitions, 173 flow [2023-01-27 23:24:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:24:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:24:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-01-27 23:24:11,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-01-27 23:24:11,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-01-27 23:24:11,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-01-27 23:24:11,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:11,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-01-27 23:24:11,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 23:24:11,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:11,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:11,172 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 72 flow. Second operand 3 states and 384 transitions. [2023-01-27 23:24:11,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 43 transitions, 173 flow [2023-01-27 23:24:11,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 163 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:24:11,175 INFO L231 Difference]: Finished difference. Result has 31 places, 30 transitions, 74 flow [2023-01-27 23:24:11,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2023-01-27 23:24:11,178 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-01-27 23:24:11,179 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 74 flow [2023-01-27 23:24:11,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 23:24:11,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:11,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:11,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:24:11,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:11,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2115918277, now seen corresponding path program 1 times [2023-01-27 23:24:11,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:11,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578714256] [2023-01-27 23:24:11,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:11,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:11,263 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 23:24:11,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:11,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578714256] [2023-01-27 23:24:11,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578714256] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:24:11,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:24:11,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:24:11,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160752469] [2023-01-27 23:24:11,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:24:11,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:24:11,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:24:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:24:11,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 224 [2023-01-27 23:24:11,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 23:24:11,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:11,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 224 [2023-01-27 23:24:11,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:11,356 INFO L130 PetriNetUnfolder]: 357/694 cut-off events. [2023-01-27 23:24:11,357 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-01-27 23:24:11,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 694 events. 357/694 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3192 event pairs, 141 based on Foata normal form. 0/648 useless extension candidates. Maximal degree in co-relation 442. Up to 347 conditions per place. [2023-01-27 23:24:11,362 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-01-27 23:24:11,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 191 flow [2023-01-27 23:24:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:24:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:24:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-01-27 23:24:11,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-01-27 23:24:11,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-01-27 23:24:11,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-01-27 23:24:11,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:11,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-01-27 23:24:11,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states 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 23:24:11,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:11,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:11,375 INFO L175 Difference]: Start difference. First operand has 31 places, 30 transitions, 74 flow. Second operand 3 states and 376 transitions. [2023-01-27 23:24:11,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 191 flow [2023-01-27 23:24:11,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:24:11,376 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 84 flow [2023-01-27 23:24:11,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-01-27 23:24:11,377 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-01-27 23:24:11,377 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 84 flow [2023-01-27 23:24:11,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 23:24:11,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:11,378 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] [2023-01-27 23:24:11,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:24:11,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:11,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:11,379 INFO L85 PathProgramCache]: Analyzing trace with hash 26892520, now seen corresponding path program 1 times [2023-01-27 23:24:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301688041] [2023-01-27 23:24:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:11,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:11,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301688041] [2023-01-27 23:24:11,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301688041] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:24:11,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:24:11,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:24:11,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784948136] [2023-01-27 23:24:11,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:24:11,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:24:11,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:11,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:24:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:24:11,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 224 [2023-01-27 23:24:11,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 23:24:11,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:11,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 224 [2023-01-27 23:24:11,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:11,622 INFO L130 PetriNetUnfolder]: 309/688 cut-off events. [2023-01-27 23:24:11,622 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-01-27 23:24:11,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 688 events. 309/688 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3367 event pairs, 105 based on Foata normal form. 80/740 useless extension candidates. Maximal degree in co-relation 413. Up to 316 conditions per place. [2023-01-27 23:24:11,624 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 25 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-01-27 23:24:11,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 183 flow [2023-01-27 23:24:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:24:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:24:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-01-27 23:24:11,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2023-01-27 23:24:11,627 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-01-27 23:24:11,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-01-27 23:24:11,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:11,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-01-27 23:24:11,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:24:11,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:11,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:11,629 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 84 flow. Second operand 3 states and 346 transitions. [2023-01-27 23:24:11,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 183 flow [2023-01-27 23:24:11,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:24:11,631 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 102 flow [2023-01-27 23:24:11,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2023-01-27 23:24:11,633 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-27 23:24:11,633 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 102 flow [2023-01-27 23:24:11,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 23:24:11,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:11,633 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] [2023-01-27 23:24:11,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:24:11,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:11,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:11,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1826989588, now seen corresponding path program 2 times [2023-01-27 23:24:11,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:11,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476147538] [2023-01-27 23:24:11,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:11,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:11,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476147538] [2023-01-27 23:24:11,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476147538] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:24:11,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934067177] [2023-01-27 23:24:11,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:24:11,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:11,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:11,729 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 23:24:11,730 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 23:24:11,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:24:11,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:24:11,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 23:24:11,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:24:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:11,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:24:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:11,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934067177] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:24:11,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:24:11,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-01-27 23:24:11,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038174508] [2023-01-27 23:24:11,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:24:11,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 23:24:11,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:11,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 23:24:11,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 23:24:11,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 224 [2023-01-27 23:24:11,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 102 flow. Second operand has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:11,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:11,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 224 [2023-01-27 23:24:11,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:12,218 INFO L130 PetriNetUnfolder]: 631/1544 cut-off events. [2023-01-27 23:24:12,219 INFO L131 PetriNetUnfolder]: For 432/438 co-relation queries the response was YES. [2023-01-27 23:24:12,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1544 events. 631/1544 cut-off events. For 432/438 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8646 event pairs, 42 based on Foata normal form. 134/1608 useless extension candidates. Maximal degree in co-relation 843. Up to 306 conditions per place. [2023-01-27 23:24:12,229 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 141 selfloop transitions, 33 changer transitions 0/181 dead transitions. [2023-01-27 23:24:12,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 181 transitions, 978 flow [2023-01-27 23:24:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 23:24:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 23:24:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1900 transitions. [2023-01-27 23:24:12,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301339285714286 [2023-01-27 23:24:12,233 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1900 transitions. [2023-01-27 23:24:12,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1900 transitions. [2023-01-27 23:24:12,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:12,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1900 transitions. [2023-01-27 23:24:12,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.75) internal successors, (1900), 16 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 23:24:12,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 224.0) internal successors, (3808), 17 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states 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 23:24:12,242 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 224.0) internal successors, (3808), 17 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states 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 23:24:12,242 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 102 flow. Second operand 16 states and 1900 transitions. [2023-01-27 23:24:12,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 181 transitions, 978 flow [2023-01-27 23:24:12,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 181 transitions, 892 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:24:12,248 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 388 flow [2023-01-27 23:24:12,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=388, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-01-27 23:24:12,249 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-01-27 23:24:12,249 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 388 flow [2023-01-27 23:24:12,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:12,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:12,250 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:12,272 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 23:24:12,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:12,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:12,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash 734167052, now seen corresponding path program 3 times [2023-01-27 23:24:12,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:12,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403111098] [2023-01-27 23:24:12,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-01-27 23:24:12,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403111098] [2023-01-27 23:24:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403111098] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:24:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510118032] [2023-01-27 23:24:12,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:24:12,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:12,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:12,549 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 23:24:12,577 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 23:24:12,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 23:24:12,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:24:12,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:24:12,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:24:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-01-27 23:24:12,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:24:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510118032] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:24:12,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:24:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-27 23:24:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048758928] [2023-01-27 23:24:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:24:12,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:24:12,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:12,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:24:12,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:24:12,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 224 [2023-01-27 23:24:12,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 23:24:12,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:12,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 224 [2023-01-27 23:24:12,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:12,912 INFO L130 PetriNetUnfolder]: 1067/2182 cut-off events. [2023-01-27 23:24:12,912 INFO L131 PetriNetUnfolder]: For 5397/5397 co-relation queries the response was YES. [2023-01-27 23:24:12,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 2182 events. 1067/2182 cut-off events. For 5397/5397 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11406 event pairs, 219 based on Foata normal form. 0/2018 useless extension candidates. Maximal degree in co-relation 4998. Up to 878 conditions per place. [2023-01-27 23:24:12,922 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 100 selfloop transitions, 8 changer transitions 1/111 dead transitions. [2023-01-27 23:24:12,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 908 flow [2023-01-27 23:24:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:24:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:24:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2023-01-27 23:24:12,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5491071428571429 [2023-01-27 23:24:12,924 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2023-01-27 23:24:12,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2023-01-27 23:24:12,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:12,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2023-01-27 23:24:12,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 23:24:12,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 23:24:12,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 23:24:12,926 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 388 flow. Second operand 5 states and 615 transitions. [2023-01-27 23:24:12,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 908 flow [2023-01-27 23:24:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 841 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-01-27 23:24:12,934 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 398 flow [2023-01-27 23:24:12,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-01-27 23:24:12,935 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-01-27 23:24:12,935 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 398 flow [2023-01-27 23:24:12,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 23:24:12,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:12,935 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:12,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:24:13,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:13,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:13,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:13,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1347316854, now seen corresponding path program 4 times [2023-01-27 23:24:13,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:13,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457277024] [2023-01-27 23:24:13,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:13,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-27 23:24:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457277024] [2023-01-27 23:24:13,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457277024] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:24:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860348249] [2023-01-27 23:24:13,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:24:13,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:13,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:13,211 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 23:24:13,213 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 23:24:13,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:24:13,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:24:13,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:24:13,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:24:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-27 23:24:13,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:24:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-27 23:24:13,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860348249] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:24:13,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:24:13,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-01-27 23:24:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957920365] [2023-01-27 23:24:13,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:24:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 23:24:13,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 23:24:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 23:24:13,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 224 [2023-01-27 23:24:13,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 398 flow. Second operand has 7 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 23:24:13,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:13,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 224 [2023-01-27 23:24:13,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:13,564 INFO L130 PetriNetUnfolder]: 1019/2398 cut-off events. [2023-01-27 23:24:13,564 INFO L131 PetriNetUnfolder]: For 7109/7133 co-relation queries the response was YES. [2023-01-27 23:24:13,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7400 conditions, 2398 events. 1019/2398 cut-off events. For 7109/7133 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 14058 event pairs, 168 based on Foata normal form. 118/2506 useless extension candidates. Maximal degree in co-relation 6062. Up to 436 conditions per place. [2023-01-27 23:24:13,575 INFO L137 encePairwiseOnDemand]: 220/224 looper letters, 95 selfloop transitions, 17 changer transitions 0/123 dead transitions. [2023-01-27 23:24:13,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 123 transitions, 976 flow [2023-01-27 23:24:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:24:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:24:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 761 transitions. [2023-01-27 23:24:13,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5662202380952381 [2023-01-27 23:24:13,577 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 761 transitions. [2023-01-27 23:24:13,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 761 transitions. [2023-01-27 23:24:13,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:13,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 761 transitions. [2023-01-27 23:24:13,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 23:24:13,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 23:24:13,580 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 23:24:13,580 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 398 flow. Second operand 6 states and 761 transitions. [2023-01-27 23:24:13,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 123 transitions, 976 flow [2023-01-27 23:24:13,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 123 transitions, 976 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:24:13,589 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 469 flow [2023-01-27 23:24:13,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=469, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2023-01-27 23:24:13,589 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 43 predicate places. [2023-01-27 23:24:13,589 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 469 flow [2023-01-27 23:24:13,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 23:24:13,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:13,590 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:13,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:24:13,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:13,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:13,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:13,795 INFO L85 PathProgramCache]: Analyzing trace with hash 804205986, now seen corresponding path program 5 times [2023-01-27 23:24:13,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:13,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902548776] [2023-01-27 23:24:13,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:13,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-01-27 23:24:13,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:13,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902548776] [2023-01-27 23:24:13,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902548776] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:24:13,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:24:13,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:24:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448887120] [2023-01-27 23:24:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:24:13,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:24:13,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:24:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:24:13,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 224 [2023-01-27 23:24:13,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 23:24:13,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:13,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 224 [2023-01-27 23:24:13,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:13,993 INFO L130 PetriNetUnfolder]: 891/1924 cut-off events. [2023-01-27 23:24:13,994 INFO L131 PetriNetUnfolder]: For 6881/6881 co-relation queries the response was YES. [2023-01-27 23:24:13,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 1924 events. 891/1924 cut-off events. For 6881/6881 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9911 event pairs, 261 based on Foata normal form. 80/2004 useless extension candidates. Maximal degree in co-relation 5828. Up to 1423 conditions per place. [2023-01-27 23:24:14,003 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 58 selfloop transitions, 3 changer transitions 3/66 dead transitions. [2023-01-27 23:24:14,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 550 flow [2023-01-27 23:24:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:24:14,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:24:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2023-01-27 23:24:14,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610119047619048 [2023-01-27 23:24:14,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2023-01-27 23:24:14,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2023-01-27 23:24:14,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:14,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2023-01-27 23:24:14,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 23:24:14,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:14,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 23:24:14,009 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 469 flow. Second operand 3 states and 377 transitions. [2023-01-27 23:24:14,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 550 flow [2023-01-27 23:24:14,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 522 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-01-27 23:24:14,018 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 336 flow [2023-01-27 23:24:14,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2023-01-27 23:24:14,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2023-01-27 23:24:14,019 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 336 flow [2023-01-27 23:24:14,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 23:24:14,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:14,021 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:14,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:24:14,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:14,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1105729770, now seen corresponding path program 6 times [2023-01-27 23:24:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:14,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367707062] [2023-01-27 23:24:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:14,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-01-27 23:24:14,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:14,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367707062] [2023-01-27 23:24:14,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367707062] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:24:14,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990156316] [2023-01-27 23:24:14,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 23:24:14,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:14,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:14,226 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 23:24:14,269 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 23:24:14,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-27 23:24:14,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:24:14,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 23:24:14,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:24:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-01-27 23:24:14,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:24:14,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990156316] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:24:14,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:24:14,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2023-01-27 23:24:14,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421949228] [2023-01-27 23:24:14,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:24:14,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:24:14,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:24:14,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 23:24:14,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-27 23:24:14,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 23:24:14,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:14,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-27 23:24:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:14,651 INFO L130 PetriNetUnfolder]: 709/1544 cut-off events. [2023-01-27 23:24:14,651 INFO L131 PetriNetUnfolder]: For 3668/3668 co-relation queries the response was YES. [2023-01-27 23:24:14,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 1544 events. 709/1544 cut-off events. For 3668/3668 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7322 event pairs, 185 based on Foata normal form. 34/1578 useless extension candidates. Maximal degree in co-relation 3165. Up to 668 conditions per place. [2023-01-27 23:24:14,659 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 69 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2023-01-27 23:24:14,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 652 flow [2023-01-27 23:24:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:24:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:24:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-01-27 23:24:14,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2023-01-27 23:24:14,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-01-27 23:24:14,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-01-27 23:24:14,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:14,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-01-27 23:24:14,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:24:14,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 23:24:14,664 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 23:24:14,664 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 336 flow. Second operand 6 states and 708 transitions. [2023-01-27 23:24:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 652 flow [2023-01-27 23:24:14,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 81 transitions, 646 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 23:24:14,671 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 380 flow [2023-01-27 23:24:14,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=380, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-01-27 23:24:14,672 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2023-01-27 23:24:14,672 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 380 flow [2023-01-27 23:24:14,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 23:24:14,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:14,672 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:14,679 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 23:24:14,877 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 23:24:14,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:14,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:14,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1529417168, now seen corresponding path program 7 times [2023-01-27 23:24:14,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:14,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21680161] [2023-01-27 23:24:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:14,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-01-27 23:24:15,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:15,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21680161] [2023-01-27 23:24:15,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21680161] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:24:15,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288947159] [2023-01-27 23:24:15,090 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 23:24:15,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:15,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:15,091 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 23:24:15,093 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 23:24:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:15,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-27 23:24:15,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:24:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 23:24:15,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:24:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-01-27 23:24:15,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288947159] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:24:15,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:24:15,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 9 [2023-01-27 23:24:15,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624771070] [2023-01-27 23:24:15,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:24:15,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:24:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:24:15,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:24:15,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-27 23:24:15,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 114.1) internal successors, (1141), 10 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 23:24:15,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:15,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-27 23:24:15,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:15,556 INFO L130 PetriNetUnfolder]: 375/832 cut-off events. [2023-01-27 23:24:15,557 INFO L131 PetriNetUnfolder]: For 2487/2487 co-relation queries the response was YES. [2023-01-27 23:24:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 832 events. 375/832 cut-off events. For 2487/2487 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2946 event pairs, 104 based on Foata normal form. 28/860 useless extension candidates. Maximal degree in co-relation 1449. Up to 351 conditions per place. [2023-01-27 23:24:15,560 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 61 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-01-27 23:24:15,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 586 flow [2023-01-27 23:24:15,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:24:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:24:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 706 transitions. [2023-01-27 23:24:15,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252976190476191 [2023-01-27 23:24:15,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 706 transitions. [2023-01-27 23:24:15,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 706 transitions. [2023-01-27 23:24:15,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:15,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 706 transitions. [2023-01-27 23:24:15,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.66666666666667) internal successors, (706), 6 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:24:15,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 23:24:15,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 23:24:15,565 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 380 flow. Second operand 6 states and 706 transitions. [2023-01-27 23:24:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 586 flow [2023-01-27 23:24:15,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 530 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-01-27 23:24:15,569 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 283 flow [2023-01-27 23:24:15,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-01-27 23:24:15,570 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2023-01-27 23:24:15,570 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 283 flow [2023-01-27 23:24:15,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 114.1) internal successors, (1141), 10 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states 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 23:24:15,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:24:15,570 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:24:15,597 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 23:24:15,797 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 23:24:15,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:24:15,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:24:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1103703702, now seen corresponding path program 8 times [2023-01-27 23:24:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:24:15,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816238698] [2023-01-27 23:24:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:24:15,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:24:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:24:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:24:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816238698] [2023-01-27 23:24:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816238698] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:24:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008230287] [2023-01-27 23:24:16,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:24:16,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:24:16,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:24:16,213 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 23:24:16,215 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 23:24:16,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:24:16,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:24:16,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 22 conjunts are in the unsatisfiable core [2023-01-27 23:24:16,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:24:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:16,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:24:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:24:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008230287] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:24:18,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:24:18,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 29 [2023-01-27 23:24:18,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020822904] [2023-01-27 23:24:18,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:24:18,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-27 23:24:18,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:24:18,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-27 23:24:18,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-01-27 23:24:18,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 224 [2023-01-27 23:24:18,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 283 flow. Second operand has 31 states, 31 states have (on average 112.54838709677419) internal successors, (3489), 31 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states 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 23:24:18,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:24:18,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 224 [2023-01-27 23:24:18,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:24:19,291 INFO L130 PetriNetUnfolder]: 255/668 cut-off events. [2023-01-27 23:24:19,291 INFO L131 PetriNetUnfolder]: For 1337/1343 co-relation queries the response was YES. [2023-01-27 23:24:19,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 668 events. 255/668 cut-off events. For 1337/1343 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2409 event pairs, 23 based on Foata normal form. 22/688 useless extension candidates. Maximal degree in co-relation 1184. Up to 118 conditions per place. [2023-01-27 23:24:19,293 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 0 selfloop transitions, 0 changer transitions 98/98 dead transitions. [2023-01-27 23:24:19,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 742 flow [2023-01-27 23:24:19,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:24:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:24:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1389 transitions. [2023-01-27 23:24:19,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167410714285714 [2023-01-27 23:24:19,296 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1389 transitions. [2023-01-27 23:24:19,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1389 transitions. [2023-01-27 23:24:19,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:24:19,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1389 transitions. [2023-01-27 23:24:19,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.75) internal successors, (1389), 12 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states 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 23:24:19,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 23:24:19,301 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 23:24:19,301 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 283 flow. Second operand 12 states and 1389 transitions. [2023-01-27 23:24:19,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 742 flow [2023-01-27 23:24:19,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 700 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-01-27 23:24:19,304 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-01-27 23:24:19,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-01-27 23:24:19,305 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2023-01-27 23:24:19,305 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-01-27 23:24:19,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 112.54838709677419) internal successors, (3489), 31 states have internal predecessors, (3489), 0 states have call successors, (0), 0 states 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 23:24:19,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:24:19,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:24:19,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:24:19,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 23:24:19,514 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 23:24:19,515 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2023-01-27 23:24:19,517 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:24:19,517 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:24:19,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:24:19 BasicIcfg [2023-01-27 23:24:19,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:24:19,520 INFO L158 Benchmark]: Toolchain (without parser) took 13899.90ms. Allocated memory was 429.9MB in the beginning and 943.7MB in the end (delta: 513.8MB). Free memory was 390.1MB in the beginning and 789.4MB in the end (delta: -399.2MB). Peak memory consumption was 115.5MB. Max. memory is 16.0GB. [2023-01-27 23:24:19,521 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 429.9MB. Free memory is still 377.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:24:19,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.12ms. Allocated memory is still 429.9MB. Free memory was 390.1MB in the beginning and 363.6MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-27 23:24:19,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.66ms. Allocated memory is still 429.9MB. Free memory was 363.6MB in the beginning and 361.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:24:19,521 INFO L158 Benchmark]: Boogie Preprocessor took 29.13ms. Allocated memory is still 429.9MB. Free memory was 361.5MB in the beginning and 359.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:24:19,521 INFO L158 Benchmark]: RCFGBuilder took 315.97ms. Allocated memory is still 429.9MB. Free memory was 359.4MB in the beginning and 342.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 23:24:19,522 INFO L158 Benchmark]: TraceAbstraction took 13132.57ms. Allocated memory was 429.9MB in the beginning and 943.7MB in the end (delta: 513.8MB). Free memory was 341.9MB in the beginning and 789.4MB in the end (delta: -447.5MB). Peak memory consumption was 67.3MB. Max. memory is 16.0GB. [2023-01-27 23:24:19,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 429.9MB. Free memory is still 377.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 373.12ms. Allocated memory is still 429.9MB. Free memory was 390.1MB in the beginning and 363.6MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.66ms. Allocated memory is still 429.9MB. Free memory was 363.6MB in the beginning and 361.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.13ms. Allocated memory is still 429.9MB. Free memory was 361.5MB in the beginning and 359.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 315.97ms. Allocated memory is still 429.9MB. Free memory was 359.4MB in the beginning and 342.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 13132.57ms. Allocated memory was 429.9MB in the beginning and 943.7MB in the end (delta: 513.8MB). Free memory was 341.9MB in the beginning and 789.4MB in the end (delta: -447.5MB). Peak memory consumption was 67.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 117 PlacesBefore, 32 PlacesAfterwards, 118 TransitionsBefore, 30 TransitionsAfterwards, 1922 CoEnabledTransitionPairs, 7 FixpointIterations, 53 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 4363 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2172, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1031, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2172, independent: 1000, independent conditional: 0, independent unconditional: 1000, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1031, unknown conditional: 0, unknown unconditional: 1031] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 919]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 167 locations, 3 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: 13.0s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2404 IncrementalHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 2 mSDtfsCounter, 2404 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 513 GetRequests, 411 SyntacticMatches, 22 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=469occurred in iteration=6, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 643 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 795 ConstructedInterpolants, 42 QuantifiedInterpolants, 5051 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1813 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 532/826 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:24:19,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...