/usr/bin/java -Xmx8000000000 -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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 23:43:32,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 23:43:32,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 23:43:32,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 23:43:32,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 23:43:32,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 23:43:32,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 23:43:32,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 23:43:32,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 23:43:32,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 23:43:32,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 23:43:32,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 23:43:32,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 23:43:32,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 23:43:32,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 23:43:32,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 23:43:32,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 23:43:32,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 23:43:32,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 23:43:32,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 23:43:32,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 23:43:32,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 23:43:32,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 23:43:32,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 23:43:32,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 23:43:33,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 23:43:33,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 23:43:33,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 23:43:33,012 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-RepeatedSemanticLbe.epf [2022-12-05 23:43:33,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 23:43:33,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 23:43:33,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 23:43:33,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 23:43:33,045 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 23:43:33,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 23:43:33,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 23:43:33,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 23:43:33,047 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 23:43:33,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 23:43:33,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 23:43:33,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 23:43:33,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 23:43:33,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 23:43:33,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 23:43:33,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 23:43:33,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 23:43:33,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 23:43:33,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 23:43:33,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 23:43:33,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-05 23:43:33,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 23:43:33,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 23:43:33,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 23:43:33,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 23:43:33,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 23:43:33,382 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 23:43:33,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-12-05 23:43:34,526 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 23:43:34,812 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 23:43:34,812 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-12-05 23:43:34,825 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f742914be/1df755e54f7e4556920cce84c6b735d7/FLAGfd7001f3b [2022-12-05 23:43:34,839 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f742914be/1df755e54f7e4556920cce84c6b735d7 [2022-12-05 23:43:34,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 23:43:34,842 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 23:43:34,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 23:43:34,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 23:43:34,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 23:43:34,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:43:34" (1/1) ... [2022-12-05 23:43:34,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316995ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:34, skipping insertion in model container [2022-12-05 23:43:34,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:43:34" (1/1) ... [2022-12-05 23:43:34,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 23:43:34,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 23:43:35,044 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] [2022-12-05 23:43:35,306 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-05 23:43:35,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 23:43:35,319 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 23:43:35,328 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i[1103,1116] [2022-12-05 23:43:35,373 WARN L623 FunctionHandler]: Unknown extern function sleep [2022-12-05 23:43:35,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 23:43:35,451 INFO L208 MainTranslator]: Completed translation [2022-12-05 23:43:35,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35 WrapperNode [2022-12-05 23:43:35,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 23:43:35,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 23:43:35,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 23:43:35,453 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 23:43:35,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,526 INFO L138 Inliner]: procedures = 354, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2022-12-05 23:43:35,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 23:43:35,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 23:43:35,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 23:43:35,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 23:43:35,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,573 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 23:43:35,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 23:43:35,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 23:43:35,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 23:43:35,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (1/1) ... [2022-12-05 23:43:35,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 23:43:35,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:43:35,624 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) [2022-12-05 23:43:35,655 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 [2022-12-05 23:43:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-12-05 23:43:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2022-12-05 23:43:35,671 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2022-12-05 23:43:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2022-12-05 23:43:35,672 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2022-12-05 23:43:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 23:43:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 23:43:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 23:43:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 23:43:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 23:43:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 23:43:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 23:43:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 23:43:35,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 23:43:35,674 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 23:43:36,019 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 23:43:36,021 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 23:43:36,193 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 23:43:36,208 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 23:43:36,208 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 23:43:36,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:43:36 BoogieIcfgContainer [2022-12-05 23:43:36,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 23:43:36,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 23:43:36,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 23:43:36,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 23:43:36,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 11:43:34" (1/3) ... [2022-12-05 23:43:36,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f369417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 11:43:36, skipping insertion in model container [2022-12-05 23:43:36,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:43:35" (2/3) ... [2022-12-05 23:43:36,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f369417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 11:43:36, skipping insertion in model container [2022-12-05 23:43:36,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:43:36" (3/3) ... [2022-12-05 23:43:36,221 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2022-12-05 23:43:36,236 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 23:43:36,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 23:43:36,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 23:43:36,309 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 23:43:36,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 88 transitions, 192 flow [2022-12-05 23:43:36,373 INFO L130 PetriNetUnfolder]: 1/86 cut-off events. [2022-12-05 23:43:36,373 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 23:43:36,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 1/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2022-12-05 23:43:36,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 88 transitions, 192 flow [2022-12-05 23:43:36,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 70 transitions, 149 flow [2022-12-05 23:43:36,382 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:43:36,396 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 70 transitions, 149 flow [2022-12-05 23:43:36,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 70 transitions, 149 flow [2022-12-05 23:43:36,415 INFO L130 PetriNetUnfolder]: 0/70 cut-off events. [2022-12-05 23:43:36,416 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 23:43:36,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 0/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-05 23:43:36,417 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 70 transitions, 149 flow [2022-12-05 23:43:36,418 INFO L188 LiptonReduction]: Number of co-enabled transitions 552 [2022-12-05 23:43:40,519 INFO L203 LiptonReduction]: Total number of compositions: 59 [2022-12-05 23:43:40,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 23:43:40,536 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=REPEATED_LIPTON_PN, 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;@3edd69a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 23:43:40,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 23:43:40,539 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-05 23:43:40,539 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 23:43:40,539 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:43:40,540 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-05 23:43:40,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 23:43:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:43:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 197933511, now seen corresponding path program 1 times [2022-12-05 23:43:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:43:40,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131088374] [2022-12-05 23:43:40,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:43:40,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:43:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:43:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:43:40,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:43:40,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131088374] [2022-12-05 23:43:40,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131088374] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:43:40,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:43:40,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 23:43:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299086709] [2022-12-05 23:43:40,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:43:40,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 23:43:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:43:40,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 23:43:40,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 23:43:40,929 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 13 [2022-12-05 23:43:40,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:43:40,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:43:40,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 13 [2022-12-05 23:43:40,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:43:40,971 INFO L130 PetriNetUnfolder]: 17/53 cut-off events. [2022-12-05 23:43:40,972 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 23:43:40,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 53 events. 17/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 134 event pairs, 10 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 85. Up to 31 conditions per place. [2022-12-05 23:43:40,973 INFO L137 encePairwiseOnDemand]: 9/13 looper letters, 12 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2022-12-05 23:43:40,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 76 flow [2022-12-05 23:43:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 23:43:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 23:43:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 22 transitions. [2022-12-05 23:43:40,983 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2022-12-05 23:43:40,984 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 22 transitions. [2022-12-05 23:43:40,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 76 flow [2022-12-05 23:43:40,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 23:43:40,987 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 41 flow [2022-12-05 23:43:40,988 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2022-12-05 23:43:40,991 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2022-12-05 23:43:40,991 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:43:40,991 INFO L89 Accepts]: Start accepts. Operand has 20 places, 13 transitions, 41 flow [2022-12-05 23:43:40,993 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:43:40,993 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:43:40,993 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 13 transitions, 41 flow [2022-12-05 23:43:40,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 41 flow [2022-12-05 23:43:40,998 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-05 23:43:40,998 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 23:43:40,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 16 events. 0/16 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-05 23:43:40,999 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 13 transitions, 41 flow [2022-12-05 23:43:40,999 INFO L188 LiptonReduction]: Number of co-enabled transitions 42 [2022-12-05 23:43:41,010 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [270] L1357-->f1EXIT: Formula: (and (= |v_f1Thread1of1ForFork0_#res.offset_11| 0) (= |v_f1Thread1of1ForFork0_#res.base_11| 0) (= v_~g~0_45 0) (= (store |v_#pthreadsMutex_127| |v_~#mut~0.base_87| (store (select |v_#pthreadsMutex_127| |v_~#mut~0.base_87|) |v_~#mut~0.offset_87| 0)) |v_#pthreadsMutex_125|)) InVars {#pthreadsMutex=|v_#pthreadsMutex_127|, ~#mut~0.base=|v_~#mut~0.base_87|, ~#mut~0.offset=|v_~#mut~0.offset_87|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_125|, ~#mut~0.base=|v_~#mut~0.base_87|, f1Thread1of1ForFork0_#t~nondet5=|v_f1Thread1of1ForFork0_#t~nondet5_25|, f1Thread1of1ForFork0_#res.offset=|v_f1Thread1of1ForFork0_#res.offset_11|, ~g~0=v_~g~0_45, ~#mut~0.offset=|v_~#mut~0.offset_87|, f1Thread1of1ForFork0_#t~nondet6=|v_f1Thread1of1ForFork0_#t~nondet6_13|, f1Thread1of1ForFork0_#res.base=|v_f1Thread1of1ForFork0_#res.base_11|} AuxVars[] AssignedVars[#pthreadsMutex, f1Thread1of1ForFork0_#t~nondet5, f1Thread1of1ForFork0_#res.offset, ~g~0, f1Thread1of1ForFork0_#t~nondet6, f1Thread1of1ForFork0_#res.base] and [239] $Ultimate##0-->L1357: Formula: (let ((.cse0 (select |v_#pthreadsMutex_98| |v_~#mut~0.base_49|))) (and (= (select .cse0 |v_~#mut~0.offset_49|) 0) (= v_~g~0_19 1) (= |v_f1Thread1of1ForFork0_#in~ptr.base_9| v_f1Thread1of1ForFork0_~ptr.base_9) (= |v_#pthreadsMutex_97| (store |v_#pthreadsMutex_98| |v_~#mut~0.base_49| (store .cse0 |v_~#mut~0.offset_49| 1))) (= |v_f1Thread1of1ForFork0_#in~ptr.offset_9| v_f1Thread1of1ForFork0_~ptr.offset_9))) InVars {#pthreadsMutex=|v_#pthreadsMutex_98|, ~#mut~0.base=|v_~#mut~0.base_49|, ~#mut~0.offset=|v_~#mut~0.offset_49|, f1Thread1of1ForFork0_#in~ptr.offset=|v_f1Thread1of1ForFork0_#in~ptr.offset_9|, f1Thread1of1ForFork0_#in~ptr.base=|v_f1Thread1of1ForFork0_#in~ptr.base_9|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_97|, ~#mut~0.base=|v_~#mut~0.base_49|, f1Thread1of1ForFork0_#t~nondet4=|v_f1Thread1of1ForFork0_#t~nondet4_17|, ~g~0=v_~g~0_19, f1Thread1of1ForFork0_~ptr.base=v_f1Thread1of1ForFork0_~ptr.base_9, ~#mut~0.offset=|v_~#mut~0.offset_49|, f1Thread1of1ForFork0_#in~ptr.offset=|v_f1Thread1of1ForFork0_#in~ptr.offset_9|, f1Thread1of1ForFork0_#in~ptr.base=|v_f1Thread1of1ForFork0_#in~ptr.base_9|, f1Thread1of1ForFork0_~ptr.offset=v_f1Thread1of1ForFork0_~ptr.offset_9} AuxVars[] AssignedVars[#pthreadsMutex, f1Thread1of1ForFork0_#t~nondet4, ~g~0, f1Thread1of1ForFork0_~ptr.base, f1Thread1of1ForFork0_~ptr.offset] [2022-12-05 23:43:41,082 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-05 23:43:41,084 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 93 [2022-12-05 23:43:41,085 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 44 flow [2022-12-05 23:43:41,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:43:41,085 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:43:41,085 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:43:41,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 23:43:41,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 23:43:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:43:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1840971304, now seen corresponding path program 1 times [2022-12-05 23:43:41,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:43:41,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088393179] [2022-12-05 23:43:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:43:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:43:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:43:41,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:43:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:43:41,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088393179] [2022-12-05 23:43:41,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088393179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:43:41,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:43:41,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 23:43:41,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125459780] [2022-12-05 23:43:41,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:43:41,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 23:43:41,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:43:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 23:43:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 23:43:41,246 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 13 [2022-12-05 23:43:41,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:43:41,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:43:41,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 13 [2022-12-05 23:43:41,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:43:41,287 INFO L130 PetriNetUnfolder]: 9/29 cut-off events. [2022-12-05 23:43:41,288 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-05 23:43:41,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 29 events. 9/29 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 3 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 26. Up to 16 conditions per place. [2022-12-05 23:43:41,288 INFO L137 encePairwiseOnDemand]: 10/13 looper letters, 9 selfloop transitions, 3 changer transitions 1/13 dead transitions. [2022-12-05 23:43:41,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 63 flow [2022-12-05 23:43:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 23:43:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 23:43:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2022-12-05 23:43:41,290 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2022-12-05 23:43:41,290 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 44 flow. Second operand 3 states and 17 transitions. [2022-12-05 23:43:41,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 63 flow [2022-12-05 23:43:41,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 23:43:41,291 INFO L231 Difference]: Finished difference. Result has 17 places, 9 transitions, 31 flow [2022-12-05 23:43:41,291 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2022-12-05 23:43:41,292 INFO L294 CegarLoopForPetriNet]: 20 programPoint places, -3 predicate places. [2022-12-05 23:43:41,292 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:43:41,292 INFO L89 Accepts]: Start accepts. Operand has 17 places, 9 transitions, 31 flow [2022-12-05 23:43:41,292 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:43:41,292 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:43:41,293 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 9 transitions, 31 flow [2022-12-05 23:43:41,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 16 places, 9 transitions, 31 flow [2022-12-05 23:43:41,297 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-05 23:43:41,297 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 23:43:41,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 10 events. 0/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-05 23:43:41,297 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 9 transitions, 31 flow [2022-12-05 23:43:41,297 INFO L188 LiptonReduction]: Number of co-enabled transitions 16 [2022-12-05 23:43:41,398 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-05 23:43:41,400 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 108 [2022-12-05 23:43:41,400 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 7 transitions, 25 flow [2022-12-05 23:43:41,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:43:41,400 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:43:41,400 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-05 23:43:41,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 23:43:41,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 23:43:41,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:43:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 198339319, now seen corresponding path program 1 times [2022-12-05 23:43:41,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:43:41,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633292705] [2022-12-05 23:43:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:43:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:43:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 23:43:41,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-05 23:43:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 23:43:41,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-05 23:43:41,489 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-05 23:43:41,490 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 23:43:41,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 23:43:41,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 23:43:41,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-12-05 23:43:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 23:43:41,492 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-05 23:43:41,496 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 23:43:41,496 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 23:43:41,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 11:43:41 BasicIcfg [2022-12-05 23:43:41,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 23:43:41,535 INFO L158 Benchmark]: Toolchain (without parser) took 6692.74ms. Allocated memory was 208.7MB in the beginning and 250.6MB in the end (delta: 41.9MB). Free memory was 181.9MB in the beginning and 205.9MB in the end (delta: -24.0MB). Peak memory consumption was 19.0MB. Max. memory is 8.0GB. [2022-12-05 23:43:41,538 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 208.7MB. Free memory is still 185.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 23:43:41,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 609.28ms. Allocated memory is still 208.7MB. Free memory was 181.9MB in the beginning and 143.7MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2022-12-05 23:43:41,543 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.13ms. Allocated memory is still 208.7MB. Free memory was 143.7MB in the beginning and 141.0MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 23:43:41,543 INFO L158 Benchmark]: Boogie Preprocessor took 51.39ms. Allocated memory is still 208.7MB. Free memory was 141.0MB in the beginning and 138.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 23:43:41,544 INFO L158 Benchmark]: RCFGBuilder took 629.82ms. Allocated memory is still 208.7MB. Free memory was 138.4MB in the beginning and 119.0MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-05 23:43:41,544 INFO L158 Benchmark]: TraceAbstraction took 5317.83ms. Allocated memory was 208.7MB in the beginning and 250.6MB in the end (delta: 41.9MB). Free memory was 118.0MB in the beginning and 205.9MB in the end (delta: -87.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 23:43:41,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 208.7MB. Free memory is still 185.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 609.28ms. Allocated memory is still 208.7MB. Free memory was 181.9MB in the beginning and 143.7MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 74.13ms. Allocated memory is still 208.7MB. Free memory was 143.7MB in the beginning and 141.0MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 51.39ms. Allocated memory is still 208.7MB. Free memory was 141.0MB in the beginning and 138.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 629.82ms. Allocated memory is still 208.7MB. Free memory was 138.4MB in the beginning and 119.0MB in the end (delta: 19.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 5317.83ms. Allocated memory was 208.7MB in the beginning and 250.6MB in the end (delta: 41.9MB). Free memory was 118.0MB in the beginning and 205.9MB in the end (delta: -87.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.1s, 77 PlacesBefore, 20 PlacesAfterwards, 70 TransitionsBefore, 13 TransitionsAfterwards, 552 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 25 ConcurrentYvCompositions, 0 ChoiceCompositions, 59 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 366, independent: 343, independent conditional: 343, independent unconditional: 0, dependent: 23, dependent conditional: 23, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 366, independent: 343, independent conditional: 0, independent unconditional: 343, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 366, independent: 343, independent conditional: 0, independent unconditional: 343, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 366, independent: 343, independent conditional: 0, independent unconditional: 343, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 320, independent: 309, independent conditional: 0, independent unconditional: 309, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 320, independent: 301, independent conditional: 0, independent unconditional: 301, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 19, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 366, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 320, unknown conditional: 0, unknown unconditional: 320] , Statistics on independence cache: Total cache size (in pairs): 519, Positive cache size: 508, Positive conditional cache size: 0, Positive unconditional cache size: 508, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 20 PlacesBefore, 20 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 16, independent: 12, independent conditional: 12, independent unconditional: 0, dependent: 4, dependent conditional: 4, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 16, independent: 12, independent conditional: 6, independent unconditional: 6, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 16, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 16, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16, independent: 3, independent conditional: 0, independent unconditional: 3, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 6, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 16 PlacesBefore, 14 PlacesAfterwards, 9 TransitionsBefore, 7 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 4, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1; [L1374] 0 pthread_t t2; [L1375] FCALL, FORK 0 pthread_create(&t1,((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={4:0}, g=0, mut={3:0}, pthread_create(&t1,((void *)0),f1,((void *)0))=-1, ptr={0:0}, t1={6:0}, t2={5:0}] [L1356] 1 g = 1 [L1377] FCALL, FORK 0 pthread_create(&t2,((void *)0),f2,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1151:1152}, argv={1151:1152}, cond={4:0}, g=1, mut={3:0}, pthread_create(&t2,((void *)0),f2,((void *)0))=0, ptr={0:0}, ptr={0:0}, t1={6:0}, t2={5:0}] [L1365] CALL 2 __VERIFIER_assert(g == 0) [L19] COND TRUE 2 !(cond) [L19] 2 reach_error() VAL [\old(cond)=0, cond=0, cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] - UnprovableResult [Line: 1375]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1377]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 4 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: 5.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=1, InterpolantAutomatonStates: 6, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2022-12-05 23:43:41,565 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 Received shutdown request...