/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-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:59:36,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:59:36,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:59:36,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:59:36,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:59:36,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:59:36,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:59:36,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:59:36,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:59:36,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:59:36,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:59:36,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:59:36,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:59:36,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:59:36,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:59:36,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:59:36,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:59:36,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:59:36,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:59:36,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:59:36,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:59:36,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:59:36,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:59:36,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:59:36,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:59:36,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:59:36,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:59:36,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:59:36,215 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 18:59:36,236 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:59:36,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:59:36,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:59:36,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:59:36,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:59:36,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:59:36,238 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:59:36,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:59:36,238 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:59:36,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:59:36,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:59:36,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:59:36,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:59:36,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:59:36,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:59:36,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:59:36,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:59:36,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:59:36,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:59:36,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:59:36,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:59:36,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:59:36,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:59:36,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:59:36,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:59:36,449 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:59:36,449 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:59:36,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-01-27 18:59:37,504 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:59:37,690 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:59:37,691 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-01-27 18:59:37,713 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b8a5f39/c34ed91a3cd84f9cb1e2d02437493f05/FLAG9dc37abdc [2023-01-27 18:59:38,054 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2b8a5f39/c34ed91a3cd84f9cb1e2d02437493f05 [2023-01-27 18:59:38,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:59:38,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:59:38,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:59:38,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:59:38,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:59:38,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7701b249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38, skipping insertion in model container [2023-01-27 18:59:38,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:59:38,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:59:38,232 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-01-27 18:59:38,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:59:38,530 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:59:38,538 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-C-DAC/pthread-demo-datarace-1.i[820,833] [2023-01-27 18:59:38,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:59:38,650 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:59:38,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38 WrapperNode [2023-01-27 18:59:38,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:59:38,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:59:38,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:59:38,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:59:38,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,698 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2023-01-27 18:59:38,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:59:38,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:59:38,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:59:38,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:59:38,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:59:38,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:59:38,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:59:38,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:59:38,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (1/1) ... [2023-01-27 18:59:38,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:59:38,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:38,770 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 18:59:38,821 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 18:59:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:59:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:59:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 18:59:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:59:38,841 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 18:59:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:59:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-01-27 18:59:38,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-01-27 18:59:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:59:38,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:59:38,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:59:38,843 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 18:59:38,927 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:59:38,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:59:39,054 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:59:39,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:59:39,059 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 18:59:39,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:59:39 BoogieIcfgContainer [2023-01-27 18:59:39,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:59:39,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:59:39,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:59:39,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:59:39,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:59:38" (1/3) ... [2023-01-27 18:59:39,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399c326a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:59:39, skipping insertion in model container [2023-01-27 18:59:39,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:59:38" (2/3) ... [2023-01-27 18:59:39,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399c326a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:59:39, skipping insertion in model container [2023-01-27 18:59:39,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:59:39" (3/3) ... [2023-01-27 18:59:39,065 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-01-27 18:59:39,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:59:39,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:59:39,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:59:39,111 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-27 18:59:39,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 180 flow [2023-01-27 18:59:39,157 INFO L130 PetriNetUnfolder]: 7/85 cut-off events. [2023-01-27 18:59:39,157 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:59:39,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 7/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-01-27 18:59:39,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 180 flow [2023-01-27 18:59:39,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 77 transitions, 160 flow [2023-01-27 18:59:39,175 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:59:39,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 77 transitions, 160 flow [2023-01-27 18:59:39,183 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 77 transitions, 160 flow [2023-01-27 18:59:39,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 77 transitions, 160 flow [2023-01-27 18:59:39,197 INFO L130 PetriNetUnfolder]: 6/77 cut-off events. [2023-01-27 18:59:39,197 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:59:39,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 6/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-01-27 18:59:39,199 INFO L119 LiptonReduction]: Number of co-enabled transitions 722 [2023-01-27 18:59:40,513 INFO L134 LiptonReduction]: Checked pairs total: 866 [2023-01-27 18:59:40,513 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-01-27 18:59:40,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:59:40,526 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;@28402069, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:59:40,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-27 18:59:40,529 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-01-27 18:59:40,529 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:59:40,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:40,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:40,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:40,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1683658225, now seen corresponding path program 1 times [2023-01-27 18:59:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:40,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542503614] [2023-01-27 18:59:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:40,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:40,672 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 18:59:40,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:40,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542503614] [2023-01-27 18:59:40,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542503614] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:59:40,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:59:40,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:59:40,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150382808] [2023-01-27 18:59:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:59:40,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:59:40,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:40,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:59:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:59:40,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-01-27 18:59:40,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 18:59:40,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:40,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-01-27 18:59:40,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:40,728 INFO L130 PetriNetUnfolder]: 41/86 cut-off events. [2023-01-27 18:59:40,729 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 18:59:40,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 86 events. 41/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 205 event pairs, 15 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 162. Up to 53 conditions per place. [2023-01-27 18:59:40,730 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 20 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-01-27 18:59:40,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 23 transitions, 96 flow [2023-01-27 18:59:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:59:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:59:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-01-27 18:59:40,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043290043290043 [2023-01-27 18:59:40,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-01-27 18:59:40,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-01-27 18:59:40,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:40,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-01-27 18:59:40,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 18:59:40,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 18:59:40,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 18:59:40,748 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 36 flow. Second operand 3 states and 233 transitions. [2023-01-27 18:59:40,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 23 transitions, 96 flow [2023-01-27 18:59:40,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 23 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:59:40,751 INFO L231 Difference]: Finished difference. Result has 18 places, 16 transitions, 44 flow [2023-01-27 18:59:40,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2023-01-27 18:59:40,754 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2023-01-27 18:59:40,754 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 44 flow [2023-01-27 18:59:40,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 18:59:40,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:40,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:40,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:59:40,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:40,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:40,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1559967075, now seen corresponding path program 1 times [2023-01-27 18:59:40,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:40,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35340596] [2023-01-27 18:59:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:40,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:40,807 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 18:59:40,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:40,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35340596] [2023-01-27 18:59:40,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35340596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:59:40,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:59:40,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:59:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471955989] [2023-01-27 18:59:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:59:40,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:59:40,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:40,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:59:40,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:59:40,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2023-01-27 18:59:40,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 18:59:40,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:40,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2023-01-27 18:59:40,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:40,867 INFO L130 PetriNetUnfolder]: 61/143 cut-off events. [2023-01-27 18:59:40,868 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-27 18:59:40,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 143 events. 61/143 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 486 event pairs, 27 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 92. Up to 85 conditions per place. [2023-01-27 18:59:40,869 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-27 18:59:40,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 25 transitions, 120 flow [2023-01-27 18:59:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:59:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:59:40,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-01-27 18:59:40,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2023-01-27 18:59:40,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-01-27 18:59:40,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-01-27 18:59:40,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:40,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-01-27 18:59:40,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 18:59:40,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 18:59:40,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 18:59:40,873 INFO L175 Difference]: Start difference. First operand has 18 places, 16 transitions, 44 flow. Second operand 3 states and 230 transitions. [2023-01-27 18:59:40,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 25 transitions, 120 flow [2023-01-27 18:59:40,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 25 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:59:40,874 INFO L231 Difference]: Finished difference. Result has 20 places, 17 transitions, 54 flow [2023-01-27 18:59:40,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2023-01-27 18:59:40,874 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-01-27 18:59:40,874 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 17 transitions, 54 flow [2023-01-27 18:59:40,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states 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 18:59:40,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:40,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:40,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:59:40,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:40,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash 517091689, now seen corresponding path program 1 times [2023-01-27 18:59:40,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551209996] [2023-01-27 18:59:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:40,954 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 18:59:40,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551209996] [2023-01-27 18:59:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551209996] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:59:40,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533887996] [2023-01-27 18:59:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:40,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:40,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:40,967 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 18:59:40,969 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 18:59:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:41,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 18:59:41,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:59:41,073 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 18:59:41,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:59:41,092 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 18:59:41,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533887996] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:59:41,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:59:41,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-01-27 18:59:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598525597] [2023-01-27 18:59:41,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:59:41,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:59:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:59:41,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:59:41,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2023-01-27 18:59:41,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 17 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 18:59:41,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:41,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2023-01-27 18:59:41,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:41,190 INFO L130 PetriNetUnfolder]: 111/264 cut-off events. [2023-01-27 18:59:41,190 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-01-27 18:59:41,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 264 events. 111/264 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 930 event pairs, 18 based on Foata normal form. 30/294 useless extension candidates. Maximal degree in co-relation 198. Up to 55 conditions per place. [2023-01-27 18:59:41,192 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 44 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-01-27 18:59:41,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 51 transitions, 258 flow [2023-01-27 18:59:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:59:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:59:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2023-01-27 18:59:41,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-27 18:59:41,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 462 transitions. [2023-01-27 18:59:41,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 462 transitions. [2023-01-27 18:59:41,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:41,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 462 transitions. [2023-01-27 18:59:41,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states 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 18:59:41,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states 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 18:59:41,199 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states 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 18:59:41,199 INFO L175 Difference]: Start difference. First operand has 20 places, 17 transitions, 54 flow. Second operand 6 states and 462 transitions. [2023-01-27 18:59:41,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 51 transitions, 258 flow [2023-01-27 18:59:41,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 51 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:59:41,208 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 92 flow [2023-01-27 18:59:41,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-01-27 18:59:41,209 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 11 predicate places. [2023-01-27 18:59:41,209 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 92 flow [2023-01-27 18:59:41,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 18:59:41,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:41,210 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:41,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 18:59:41,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:41,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:41,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:41,411 INFO L85 PathProgramCache]: Analyzing trace with hash 359100007, now seen corresponding path program 2 times [2023-01-27 18:59:41,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:41,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302644352] [2023-01-27 18:59:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:41,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:41,505 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-01-27 18:59:41,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:41,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302644352] [2023-01-27 18:59:41,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302644352] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:59:41,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773562166] [2023-01-27 18:59:41,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 18:59:41,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:41,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:41,515 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 18:59:41,516 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 18:59:41,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 18:59:41,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 18:59:41,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 18:59:41,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:59:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 18:59:41,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:59:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 18:59:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773562166] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:59:41,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:59:41,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-01-27 18:59:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622643632] [2023-01-27 18:59:41,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:59:41,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 18:59:41,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 18:59:41,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-01-27 18:59:41,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2023-01-27 18:59:41,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 92 flow. Second operand has 14 states, 14 states have (on average 66.21428571428571) internal successors, (927), 14 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 18:59:41,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:41,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2023-01-27 18:59:41,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:42,115 INFO L130 PetriNetUnfolder]: 323/748 cut-off events. [2023-01-27 18:59:42,115 INFO L131 PetriNetUnfolder]: For 1511/1511 co-relation queries the response was YES. [2023-01-27 18:59:42,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 748 events. 323/748 cut-off events. For 1511/1511 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3110 event pairs, 10 based on Foata normal form. 107/855 useless extension candidates. Maximal degree in co-relation 588. Up to 168 conditions per place. [2023-01-27 18:59:42,121 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 158 selfloop transitions, 69 changer transitions 0/228 dead transitions. [2023-01-27 18:59:42,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 228 transitions, 1346 flow [2023-01-27 18:59:42,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-01-27 18:59:42,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-01-27 18:59:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2398 transitions. [2023-01-27 18:59:42,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579831932773109 [2023-01-27 18:59:42,126 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2398 transitions. [2023-01-27 18:59:42,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2398 transitions. [2023-01-27 18:59:42,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:42,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2398 transitions. [2023-01-27 18:59:42,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 70.52941176470588) internal successors, (2398), 34 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states 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 18:59:42,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 154.0) internal successors, (5390), 35 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states 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 18:59:42,137 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 154.0) internal successors, (5390), 35 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states 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 18:59:42,137 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 92 flow. Second operand 34 states and 2398 transitions. [2023-01-27 18:59:42,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 228 transitions, 1346 flow [2023-01-27 18:59:42,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 228 transitions, 1286 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-01-27 18:59:42,143 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 724 flow [2023-01-27 18:59:42,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=724, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2023-01-27 18:59:42,144 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 68 predicate places. [2023-01-27 18:59:42,144 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 724 flow [2023-01-27 18:59:42,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.21428571428571) internal successors, (927), 14 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 18:59:42,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:42,144 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:42,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 18:59:42,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 18:59:42,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:42,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:42,350 INFO L85 PathProgramCache]: Analyzing trace with hash -519767537, now seen corresponding path program 3 times [2023-01-27 18:59:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:42,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624897735] [2023-01-27 18:59:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:42,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-01-27 18:59:42,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:42,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624897735] [2023-01-27 18:59:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624897735] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:59:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152326794] [2023-01-27 18:59:42,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 18:59:42,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:42,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:42,435 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 18:59:42,461 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 18:59:42,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 18:59:42,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 18:59:42,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 18:59:42,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:59:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-01-27 18:59:42,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:59:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-01-27 18:59:42,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152326794] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:59:42,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:59:42,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-27 18:59:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091268046] [2023-01-27 18:59:42,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:59:42,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:59:42,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:59:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:59:42,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-01-27 18:59:42,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 18:59:42,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:42,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-01-27 18:59:42,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:42,911 INFO L130 PetriNetUnfolder]: 622/1299 cut-off events. [2023-01-27 18:59:42,912 INFO L131 PetriNetUnfolder]: For 19768/19770 co-relation queries the response was YES. [2023-01-27 18:59:42,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 1299 events. 622/1299 cut-off events. For 19768/19770 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6285 event pairs, 78 based on Foata normal form. 94/1393 useless extension candidates. Maximal degree in co-relation 5480. Up to 324 conditions per place. [2023-01-27 18:59:42,922 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 128 selfloop transitions, 38 changer transitions 0/167 dead transitions. [2023-01-27 18:59:42,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 167 transitions, 1986 flow [2023-01-27 18:59:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 18:59:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 18:59:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 623 transitions. [2023-01-27 18:59:42,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2023-01-27 18:59:42,924 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 623 transitions. [2023-01-27 18:59:42,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 623 transitions. [2023-01-27 18:59:42,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:42,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 623 transitions. [2023-01-27 18:59:42,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.875) internal successors, (623), 8 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 18:59:42,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 18:59:42,927 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states 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 18:59:42,927 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 724 flow. Second operand 8 states and 623 transitions. [2023-01-27 18:59:42,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 167 transitions, 1986 flow [2023-01-27 18:59:42,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 167 transitions, 1900 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-27 18:59:42,951 INFO L231 Difference]: Finished difference. Result has 93 places, 86 transitions, 860 flow [2023-01-27 18:59:42,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=93, PETRI_TRANSITIONS=86} [2023-01-27 18:59:42,952 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 76 predicate places. [2023-01-27 18:59:42,952 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 86 transitions, 860 flow [2023-01-27 18:59:42,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 18:59:42,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:42,952 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:42,972 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 18:59:43,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:43,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:43,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1170256247, now seen corresponding path program 4 times [2023-01-27 18:59:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:43,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550401804] [2023-01-27 18:59:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:43,354 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-01-27 18:59:43,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550401804] [2023-01-27 18:59:43,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550401804] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:59:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482079631] [2023-01-27 18:59:43,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 18:59:43,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:43,355 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 18:59:43,358 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 18:59:43,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 18:59:43,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 18:59:43,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 18:59:43,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:59:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-01-27 18:59:43,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:59:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-01-27 18:59:43,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482079631] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:59:43,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:59:43,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2023-01-27 18:59:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039751228] [2023-01-27 18:59:43,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:59:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 18:59:43,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 18:59:43,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-01-27 18:59:43,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 154 [2023-01-27 18:59:43,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 86 transitions, 860 flow. Second operand has 23 states, 23 states have (on average 71.65217391304348) internal successors, (1648), 23 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 18:59:43,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:43,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 154 [2023-01-27 18:59:43,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:44,222 INFO L130 PetriNetUnfolder]: 1162/2840 cut-off events. [2023-01-27 18:59:44,222 INFO L131 PetriNetUnfolder]: For 87720/87720 co-relation queries the response was YES. [2023-01-27 18:59:44,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 2840 events. 1162/2840 cut-off events. For 87720/87720 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14961 event pairs, 61 based on Foata normal form. 270/3109 useless extension candidates. Maximal degree in co-relation 11881. Up to 594 conditions per place. [2023-01-27 18:59:44,242 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 327 selfloop transitions, 66 changer transitions 0/394 dead transitions. [2023-01-27 18:59:44,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 394 transitions, 6238 flow [2023-01-27 18:59:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 18:59:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 18:59:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1701 transitions. [2023-01-27 18:59:44,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020661157024794 [2023-01-27 18:59:44,245 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1701 transitions. [2023-01-27 18:59:44,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1701 transitions. [2023-01-27 18:59:44,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:44,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1701 transitions. [2023-01-27 18:59:44,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 77.31818181818181) internal successors, (1701), 22 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states 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 18:59:44,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 18:59:44,252 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 18:59:44,252 INFO L175 Difference]: Start difference. First operand has 93 places, 86 transitions, 860 flow. Second operand 22 states and 1701 transitions. [2023-01-27 18:59:44,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 394 transitions, 6238 flow [2023-01-27 18:59:44,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 394 transitions, 5274 flow, removed 420 selfloop flow, removed 2 redundant places. [2023-01-27 18:59:44,294 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 1336 flow [2023-01-27 18:59:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1336, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2023-01-27 18:59:44,295 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 106 predicate places. [2023-01-27 18:59:44,295 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 1336 flow [2023-01-27 18:59:44,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 71.65217391304348) internal successors, (1648), 23 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 18:59:44,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:44,296 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:44,301 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 18:59:44,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:44,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:44,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash -837674743, now seen corresponding path program 5 times [2023-01-27 18:59:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:44,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028740416] [2023-01-27 18:59:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:44,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-01-27 18:59:44,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028740416] [2023-01-27 18:59:44,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028740416] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:59:44,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406626734] [2023-01-27 18:59:44,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 18:59:44,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:44,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:44,723 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 18:59:44,743 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 18:59:44,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2023-01-27 18:59:44,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 18:59:44,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 18:59:44,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:59:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-01-27 18:59:44,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:59:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 20 proven. 66 refuted. 0 times theorem prover too weak. 570 trivial. 0 not checked. [2023-01-27 18:59:45,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406626734] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:59:45,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:59:45,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-01-27 18:59:45,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501175743] [2023-01-27 18:59:45,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:59:45,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 18:59:45,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:45,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 18:59:45,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-01-27 18:59:45,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-01-27 18:59:45,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 1336 flow. Second operand has 17 states, 17 states have (on average 73.82352941176471) internal successors, (1255), 17 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 18:59:45,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:45,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-01-27 18:59:45,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:45,878 INFO L130 PetriNetUnfolder]: 2538/5271 cut-off events. [2023-01-27 18:59:45,878 INFO L131 PetriNetUnfolder]: For 98046/98048 co-relation queries the response was YES. [2023-01-27 18:59:45,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30779 conditions, 5271 events. 2538/5271 cut-off events. For 98046/98048 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 31846 event pairs, 198 based on Foata normal form. 346/5617 useless extension candidates. Maximal degree in co-relation 28711. Up to 1298 conditions per place. [2023-01-27 18:59:45,926 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 437 selfloop transitions, 46 changer transitions 0/484 dead transitions. [2023-01-27 18:59:45,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 484 transitions, 7162 flow [2023-01-27 18:59:45,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 18:59:45,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 18:59:45,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1251 transitions. [2023-01-27 18:59:45,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507711038961039 [2023-01-27 18:59:45,929 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1251 transitions. [2023-01-27 18:59:45,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1251 transitions. [2023-01-27 18:59:45,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:45,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1251 transitions. [2023-01-27 18:59:45,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.1875) internal successors, (1251), 16 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states 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 18:59:45,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states 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 18:59:45,933 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states 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 18:59:45,933 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 1336 flow. Second operand 16 states and 1251 transitions. [2023-01-27 18:59:45,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 484 transitions, 7162 flow [2023-01-27 18:59:46,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 484 transitions, 6892 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-01-27 18:59:46,082 INFO L231 Difference]: Finished difference. Result has 138 places, 128 transitions, 1588 flow [2023-01-27 18:59:46,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1588, PETRI_PLACES=138, PETRI_TRANSITIONS=128} [2023-01-27 18:59:46,083 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 121 predicate places. [2023-01-27 18:59:46,083 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 128 transitions, 1588 flow [2023-01-27 18:59:46,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 73.82352941176471) internal successors, (1255), 17 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 18:59:46,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:46,084 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:46,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 18:59:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:46,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:46,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1128715209, now seen corresponding path program 6 times [2023-01-27 18:59:46,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:46,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729391213] [2023-01-27 18:59:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:46,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 320 proven. 378 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-01-27 18:59:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729391213] [2023-01-27 18:59:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729391213] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:59:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875064252] [2023-01-27 18:59:46,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 18:59:46,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:46,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:46,714 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 18:59:46,731 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 18:59:47,062 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-01-27 18:59:47,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 18:59:47,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-27 18:59:47,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:59:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 320 proven. 378 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-01-27 18:59:47,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:59:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 320 proven. 378 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-01-27 18:59:47,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875064252] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:59:47,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:59:47,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-01-27 18:59:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509998541] [2023-01-27 18:59:47,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:59:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 18:59:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 18:59:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-01-27 18:59:47,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 154 [2023-01-27 18:59:47,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 128 transitions, 1588 flow. Second operand has 23 states, 23 states have (on average 74.21739130434783) internal successors, (1707), 23 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 18:59:47,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:47,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 154 [2023-01-27 18:59:47,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:59:48,801 INFO L130 PetriNetUnfolder]: 3570/7335 cut-off events. [2023-01-27 18:59:48,801 INFO L131 PetriNetUnfolder]: For 168608/168610 co-relation queries the response was YES. [2023-01-27 18:59:48,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45389 conditions, 7335 events. 3570/7335 cut-off events. For 168608/168610 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 45296 event pairs, 198 based on Foata normal form. 260/7595 useless extension candidates. Maximal degree in co-relation 42529. Up to 1826 conditions per place. [2023-01-27 18:59:48,874 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 611 selfloop transitions, 52 changer transitions 0/664 dead transitions. [2023-01-27 18:59:48,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 664 transitions, 9734 flow [2023-01-27 18:59:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-27 18:59:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-27 18:59:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1717 transitions. [2023-01-27 18:59:48,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067886658795749 [2023-01-27 18:59:48,878 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1717 transitions. [2023-01-27 18:59:48,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1717 transitions. [2023-01-27 18:59:48,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:59:48,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1717 transitions. [2023-01-27 18:59:48,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 78.04545454545455) internal successors, (1717), 22 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states 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 18:59:48,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 18:59:48,885 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states 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 18:59:48,885 INFO L175 Difference]: Start difference. First operand has 138 places, 128 transitions, 1588 flow. Second operand 22 states and 1717 transitions. [2023-01-27 18:59:48,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 664 transitions, 9734 flow [2023-01-27 18:59:48,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 664 transitions, 9674 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-01-27 18:59:48,996 INFO L231 Difference]: Finished difference. Result has 161 places, 135 transitions, 1826 flow [2023-01-27 18:59:48,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1826, PETRI_PLACES=161, PETRI_TRANSITIONS=135} [2023-01-27 18:59:48,997 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 144 predicate places. [2023-01-27 18:59:48,997 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 135 transitions, 1826 flow [2023-01-27 18:59:48,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 74.21739130434783) internal successors, (1707), 23 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 18:59:48,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:59:48,998 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:59:49,006 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 18:59:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:49,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 18:59:49,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:59:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 172548031, now seen corresponding path program 7 times [2023-01-27 18:59:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:59:49,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434499976] [2023-01-27 18:59:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:59:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:59:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:59:52,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:59:52,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434499976] [2023-01-27 18:59:52,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434499976] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 18:59:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150656492] [2023-01-27 18:59:52,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 18:59:52,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 18:59:52,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:59:52,394 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 18:59:52,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 18:59:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:59:52,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 168 conjunts are in the unsatisfiable core [2023-01-27 18:59:52,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 18:59:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:59:52,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 18:59:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:59:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150656492] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 18:59:53,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 18:59:53,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-01-27 18:59:53,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000573579] [2023-01-27 18:59:53,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 18:59:53,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-01-27 18:59:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:59:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-01-27 18:59:53,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-01-27 18:59:53,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2023-01-27 18:59:53,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 135 transitions, 1826 flow. Second operand has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states 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 18:59:53,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:59:53,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2023-01-27 18:59:53,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:01:38,925 INFO L130 PetriNetUnfolder]: 111574/223171 cut-off events. [2023-01-27 19:01:38,936 INFO L131 PetriNetUnfolder]: For 8867754/8867754 co-relation queries the response was YES. [2023-01-27 19:01:41,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694039 conditions, 223171 events. 111574/223171 cut-off events. For 8867754/8867754 co-relation queries the response was YES. Maximal size of possible extension queue 1804. Compared 2322248 event pairs, 3065 based on Foata normal form. 1/223172 useless extension candidates. Maximal degree in co-relation 1681661. Up to 48711 conditions per place. [2023-01-27 19:01:42,558 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 10810 selfloop transitions, 1382 changer transitions 1/12193 dead transitions. [2023-01-27 19:01:42,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 12193 transitions, 219805 flow [2023-01-27 19:01:42,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 493 states. [2023-01-27 19:01:42,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2023-01-27 19:01:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 37385 transitions. [2023-01-27 19:01:42,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49241326624693765 [2023-01-27 19:01:42,605 INFO L72 ComplementDD]: Start complementDD. Operand 493 states and 37385 transitions. [2023-01-27 19:01:42,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 493 states and 37385 transitions. [2023-01-27 19:01:42,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:01:42,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 493 states and 37385 transitions. [2023-01-27 19:01:42,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 494 states, 493 states have (on average 75.8316430020284) internal successors, (37385), 493 states have internal predecessors, (37385), 0 states have call successors, (0), 0 states 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 19:01:42,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 494 states, 494 states have (on average 154.0) internal successors, (76076), 494 states have internal predecessors, (76076), 0 states have call successors, (0), 0 states 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 19:01:42,786 INFO L81 ComplementDD]: Finished complementDD. Result has 494 states, 494 states have (on average 154.0) internal successors, (76076), 494 states have internal predecessors, (76076), 0 states have call successors, (0), 0 states 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 19:01:42,786 INFO L175 Difference]: Start difference. First operand has 161 places, 135 transitions, 1826 flow. Second operand 493 states and 37385 transitions. [2023-01-27 19:01:42,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 12193 transitions, 219805 flow [2023-01-27 19:09:18,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 640 places, 12193 transitions, 211235 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-01-27 19:09:18,882 INFO L231 Difference]: Finished difference. Result has 641 places, 1576 transitions, 7546 flow [2023-01-27 19:09:18,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1750, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=493, PETRI_FLOW=7546, PETRI_PLACES=641, PETRI_TRANSITIONS=1576} [2023-01-27 19:09:18,883 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 624 predicate places. [2023-01-27 19:09:18,883 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 1576 transitions, 7546 flow [2023-01-27 19:09:18,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states 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 19:09:18,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:09:18,885 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:09:18,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 19:09:19,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:09:19,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:09:19,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:09:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1148916451, now seen corresponding path program 8 times [2023-01-27 19:09:19,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:09:19,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000029476] [2023-01-27 19:09:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:09:19,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:09:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:09:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 1330 trivial. 0 not checked. [2023-01-27 19:09:19,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:09:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000029476] [2023-01-27 19:09:19,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000029476] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:09:19,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:09:19,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:09:19,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836433570] [2023-01-27 19:09:19,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:09:19,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:09:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:09:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:09:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:09:19,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 154 [2023-01-27 19:09:19,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 1576 transitions, 7546 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 19:09:19,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:09:19,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 154 [2023-01-27 19:09:19,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:09:27,685 INFO L130 PetriNetUnfolder]: 10744/35635 cut-off events. [2023-01-27 19:09:27,686 INFO L131 PetriNetUnfolder]: For 3230285/3230285 co-relation queries the response was YES. [2023-01-27 19:09:28,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353543 conditions, 35635 events. 10744/35635 cut-off events. For 3230285/3230285 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 399269 event pairs, 506 based on Foata normal form. 10012/45647 useless extension candidates. Maximal degree in co-relation 350101. Up to 23354 conditions per place. [2023-01-27 19:09:28,209 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 537 selfloop transitions, 112 changer transitions 0/1109 dead transitions. [2023-01-27 19:09:28,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 1109 transitions, 7197 flow [2023-01-27 19:09:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:09:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:09:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-01-27 19:09:28,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47186147186147187 [2023-01-27 19:09:28,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-01-27 19:09:28,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-01-27 19:09:28,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:09:28,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-01-27 19:09:28,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 19:09:28,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 19:09:28,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states 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 19:09:28,212 INFO L175 Difference]: Start difference. First operand has 641 places, 1576 transitions, 7546 flow. Second operand 3 states and 218 transitions. [2023-01-27 19:09:28,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 1109 transitions, 7197 flow [2023-01-27 19:10:03,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 1109 transitions, 7197 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:10:03,895 INFO L231 Difference]: Finished difference. Result has 612 places, 1094 transitions, 5842 flow [2023-01-27 19:10:03,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5618, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=5842, PETRI_PLACES=612, PETRI_TRANSITIONS=1094} [2023-01-27 19:10:03,897 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 595 predicate places. [2023-01-27 19:10:03,897 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 1094 transitions, 5842 flow [2023-01-27 19:10:03,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 19:10:03,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:10:03,897 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:10:03,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 19:10:03,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:10:03,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:10:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1655298021, now seen corresponding path program 9 times [2023-01-27 19:10:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:10:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751295992] [2023-01-27 19:10:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:10:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:10:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:10:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:10:06,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:10:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751295992] [2023-01-27 19:10:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751295992] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:10:06,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598784013] [2023-01-27 19:10:06,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:10:06,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:10:06,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:10:06,664 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:10:06,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 19:10:07,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2023-01-27 19:10:07,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:10:07,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 168 conjunts are in the unsatisfiable core [2023-01-27 19:10:07,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:10:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:10:07,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:10:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:10:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598784013] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:10:07,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:10:07,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-01-27 19:10:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089075612] [2023-01-27 19:10:07,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:10:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-01-27 19:10:07,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:10:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-01-27 19:10:07,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-01-27 19:10:07,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2023-01-27 19:10:07,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 1094 transitions, 5842 flow. Second operand has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states 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 19:10:07,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:10:07,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2023-01-27 19:10:07,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:11:03,889 INFO L130 PetriNetUnfolder]: 19289/62900 cut-off events. [2023-01-27 19:11:03,889 INFO L131 PetriNetUnfolder]: For 5719220/5719220 co-relation queries the response was YES. [2023-01-27 19:11:04,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669763 conditions, 62900 events. 19289/62900 cut-off events. For 5719220/5719220 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 757935 event pairs, 6016 based on Foata normal form. 1/62901 useless extension candidates. Maximal degree in co-relation 664409. Up to 34273 conditions per place. [2023-01-27 19:11:04,982 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 4552 selfloop transitions, 1223 changer transitions 1/5776 dead transitions. [2023-01-27 19:11:04,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1031 places, 5776 transitions, 86231 flow [2023-01-27 19:11:04,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 420 states. [2023-01-27 19:11:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2023-01-27 19:11:04,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 31042 transitions. [2023-01-27 19:11:05,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47993197278911565 [2023-01-27 19:11:05,002 INFO L72 ComplementDD]: Start complementDD. Operand 420 states and 31042 transitions. [2023-01-27 19:11:05,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 420 states and 31042 transitions. [2023-01-27 19:11:05,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:11:05,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 420 states and 31042 transitions. [2023-01-27 19:11:05,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 421 states, 420 states have (on average 73.9095238095238) internal successors, (31042), 420 states have internal predecessors, (31042), 0 states have call successors, (0), 0 states 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 19:11:05,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 421 states, 421 states have (on average 154.0) internal successors, (64834), 421 states have internal predecessors, (64834), 0 states have call successors, (0), 0 states 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 19:11:05,093 INFO L81 ComplementDD]: Finished complementDD. Result has 421 states, 421 states have (on average 154.0) internal successors, (64834), 421 states have internal predecessors, (64834), 0 states have call successors, (0), 0 states 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 19:11:05,093 INFO L175 Difference]: Start difference. First operand has 612 places, 1094 transitions, 5842 flow. Second operand 420 states and 31042 transitions. [2023-01-27 19:11:05,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1031 places, 5776 transitions, 86231 flow [2023-01-27 19:11:49,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 5776 transitions, 83070 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:11:49,483 INFO L231 Difference]: Finished difference. Result has 1213 places, 2316 transitions, 15513 flow [2023-01-27 19:11:49,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5730, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=420, PETRI_FLOW=15513, PETRI_PLACES=1213, PETRI_TRANSITIONS=2316} [2023-01-27 19:11:49,485 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1196 predicate places. [2023-01-27 19:11:49,485 INFO L495 AbstractCegarLoop]: Abstraction has has 1213 places, 2316 transitions, 15513 flow [2023-01-27 19:11:49,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states 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 19:11:49,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:11:49,486 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:11:49,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 19:11:49,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-27 19:11:49,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:11:49,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:11:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash -428446317, now seen corresponding path program 10 times [2023-01-27 19:11:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:11:49,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753727990] [2023-01-27 19:11:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:11:49,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:11:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:11:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:11:52,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:11:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753727990] [2023-01-27 19:11:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753727990] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:11:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047838577] [2023-01-27 19:11:52,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:11:52,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:11:52,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:11:52,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:11:52,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 19:11:53,920 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:11:53,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:11:53,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 168 conjunts are in the unsatisfiable core [2023-01-27 19:11:53,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:11:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:11:54,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:11:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:11:54,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047838577] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:11:54,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:11:54,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 61 [2023-01-27 19:11:54,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938319429] [2023-01-27 19:11:54,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:11:54,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-01-27 19:11:54,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:11:54,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-01-27 19:11:54,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2023-01-27 19:11:54,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2023-01-27 19:11:54,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1213 places, 2316 transitions, 15513 flow. Second operand has 63 states, 63 states have (on average 70.34920634920636) internal successors, (4432), 63 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states 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 19:11:54,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:11:54,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2023-01-27 19:11:54,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-27 19:13:30,296 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:13:30,296 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:13:31,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 19:13:31,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-27 19:13:34,243 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-27 19:13:34,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 19:13:34,243 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-27 19:13:34,244 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-27 19:13:34,245 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2023-01-27 19:13:34,247 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:13:34,247 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:13:34,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:13:34 BasicIcfg [2023-01-27 19:13:34,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:13:34,249 INFO L158 Benchmark]: Toolchain (without parser) took 836192.07ms. Allocated memory was 343.9MB in the beginning and 9.0GB in the end (delta: 8.7GB). Free memory was 276.3MB in the beginning and 5.2GB in the end (delta: -4.9GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-27 19:13:34,249 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 343.9MB. Free memory is still 287.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:13:34,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.46ms. Allocated memory was 343.9MB in the beginning and 520.1MB in the end (delta: 176.2MB). Free memory was 276.0MB in the beginning and 469.0MB in the end (delta: -193.0MB). Peak memory consumption was 37.2MB. Max. memory is 16.0GB. [2023-01-27 19:13:34,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.34ms. Allocated memory is still 520.1MB. Free memory was 468.9MB in the beginning and 465.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 19:13:34,250 INFO L158 Benchmark]: Boogie Preprocessor took 26.67ms. Allocated memory is still 520.1MB. Free memory was 465.8MB in the beginning and 464.8MB in the end (delta: 960.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:13:34,250 INFO L158 Benchmark]: RCFGBuilder took 334.55ms. Allocated memory is still 520.1MB. Free memory was 464.8MB in the beginning and 451.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 19:13:34,250 INFO L158 Benchmark]: TraceAbstraction took 835187.33ms. Allocated memory was 520.1MB in the beginning and 9.0GB in the end (delta: 8.5GB). Free memory was 450.2MB in the beginning and 5.2GB in the end (delta: -4.8GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-27 19:13:34,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 343.9MB. Free memory is still 287.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 593.46ms. Allocated memory was 343.9MB in the beginning and 520.1MB in the end (delta: 176.2MB). Free memory was 276.0MB in the beginning and 469.0MB in the end (delta: -193.0MB). Peak memory consumption was 37.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.34ms. Allocated memory is still 520.1MB. Free memory was 468.9MB in the beginning and 465.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.67ms. Allocated memory is still 520.1MB. Free memory was 465.8MB in the beginning and 464.8MB in the end (delta: 960.1kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 334.55ms. Allocated memory is still 520.1MB. Free memory was 464.8MB in the beginning and 451.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 835187.33ms. Allocated memory was 520.1MB in the beginning and 9.0GB in the end (delta: 8.5GB). Free memory was 450.2MB in the beginning and 5.2GB in the end (delta: -4.8GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 75 PlacesBefore, 17 PlacesAfterwards, 77 TransitionsBefore, 15 TransitionsAfterwards, 722 CoEnabledTransitionPairs, 5 FixpointIterations, 33 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 5 ConcurrentYvCompositions, 4 ChoiceCompositions, 68 TotalNumberOfCompositions, 866 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 675, independent: 626, independent conditional: 0, independent unconditional: 626, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 388, independent: 377, independent conditional: 0, independent unconditional: 377, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 675, independent: 249, independent conditional: 0, independent unconditional: 249, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 388, unknown conditional: 0, unknown unconditional: 388] , Statistics on independence cache: Total cache size (in pairs): 22, Positive cache size: 17, Positive conditional cache size: 0, Positive unconditional cache size: 17, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1343]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 99 locations, 2 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: 835.1s, OverallIterations: 12, TraceHistogramMax: 20, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 815.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7572 SdHoareTripleChecker+Valid, 114.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7572 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 96.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 542 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 499349 IncrementalHoareTripleChecker+Invalid, 499891 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 542 mSolverCounterUnsat, 0 mSDtfsCounter, 499349 mSolverCounterSat, 1.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2997 GetRequests, 1558 SyntacticMatches, 25 SemanticMatches, 1414 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213929 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15513occurred in iteration=11, InterpolantAutomatonStates: 1030, 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: 0.2s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 1782 NumberOfCodeBlocks, 1746 NumberOfCodeBlocksAsserted, 100 NumberOfCheckSat, 2559 ConstructedInterpolants, 0 QuantifiedInterpolants, 11605 SizeOfPredicates, 120 NumberOfNonLiveVariables, 4396 ConjunctsInSsa, 553 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 5571/19734 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown