/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/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:04:01,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:04:01,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:04:01,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:04:01,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:04:02,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:04:02,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:04:02,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:04:02,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:04:02,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:04:02,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:04:02,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:04:02,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:04:02,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:04:02,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:04:02,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:04:02,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:04:02,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:04:02,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:04:02,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:04:02,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:04:02,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:04:02,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:04:02,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:04:02,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:04:02,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:04:02,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:04:02,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:04:02,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:04:02,069 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:04:02,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:04:02,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:04:02,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:04:02,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:04:02,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:04:02,072 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:04:02,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:04:02,072 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:04:02,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:04:02,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:04:02,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:04:02,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:04:02,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:04:02,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:04:02,073 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:04:02,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:04:02,074 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:04:02,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:04:02,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:04:02,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:04:02,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:04:02,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:04:02,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:04:02,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:04:02,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:04:02,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:04:02,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:04:02,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:04:02,075 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:04:02,075 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:04:02,075 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 23:04:02,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:04:02,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:04:02,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:04:02,292 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:04:02,292 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:04:02,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-01-27 23:04:03,375 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:04:03,573 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:04:03,573 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-01-27 23:04:03,579 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400134a63/f7e22837e2ee40beaa43c534765605da/FLAG5bda05854 [2023-01-27 23:04:03,593 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400134a63/f7e22837e2ee40beaa43c534765605da [2023-01-27 23:04:03,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:04:03,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:04:03,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:04:03,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:04:03,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:04:03,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b85bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03, skipping insertion in model container [2023-01-27 23:04:03,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:04:03,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:04:03,747 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2023-01-27 23:04:03,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:04:03,757 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:04:03,774 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c[1876,1889] [2023-01-27 23:04:03,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:04:03,786 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:04:03,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03 WrapperNode [2023-01-27 23:04:03,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:04:03,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:04:03,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:04:03,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:04:03,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,811 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-01-27 23:04:03,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:04:03,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:04:03,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:04:03,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:04:03,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,827 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:04:03,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:04:03,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:04:03,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:04:03,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (1/1) ... [2023-01-27 23:04:03,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:04:03,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:03,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:04:03,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:04:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:04:03,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:04:03,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:04:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:04:03,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:04:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:04:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:04:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:04:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:04:03,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:04:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:04:03,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:04:03,888 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:04:03,966 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:04:03,968 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:04:04,089 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:04:04,095 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:04:04,095 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:04:04,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:04:04 BoogieIcfgContainer [2023-01-27 23:04:04,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:04:04,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:04:04,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:04:04,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:04:04,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:04:03" (1/3) ... [2023-01-27 23:04:04,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8cb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:04:04, skipping insertion in model container [2023-01-27 23:04:04,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:03" (2/3) ... [2023-01-27 23:04:04,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8cb27b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:04:04, skipping insertion in model container [2023-01-27 23:04:04,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:04:04" (3/3) ... [2023-01-27 23:04:04,103 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-01-27 23:04:04,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:04:04,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:04:04,134 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:04:04,213 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:04:04,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 79 transitions, 174 flow [2023-01-27 23:04:04,274 INFO L130 PetriNetUnfolder]: 6/77 cut-off events. [2023-01-27 23:04:04,274 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:04:04,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 6/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-27 23:04:04,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 79 transitions, 174 flow [2023-01-27 23:04:04,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 150 flow [2023-01-27 23:04:04,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:04:04,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 69 transitions, 150 flow [2023-01-27 23:04:04,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 69 transitions, 150 flow [2023-01-27 23:04:04,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 69 transitions, 150 flow [2023-01-27 23:04:04,316 INFO L130 PetriNetUnfolder]: 6/69 cut-off events. [2023-01-27 23:04:04,316 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:04:04,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 6/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-27 23:04:04,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 368 [2023-01-27 23:04:06,125 INFO L134 LiptonReduction]: Checked pairs total: 388 [2023-01-27 23:04:06,126 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-01-27 23:04:06,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:04:06,144 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;@2ff558e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:04:06,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:04:06,149 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-01-27 23:04:06,150 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:04:06,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:06,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:06,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:06,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash 626447548, now seen corresponding path program 1 times [2023-01-27 23:04:06,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:06,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990616816] [2023-01-27 23:04:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:06,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:06,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990616816] [2023-01-27 23:04:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990616816] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 23:04:06,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268143741] [2023-01-27 23:04:06,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:06,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:04:06,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:04:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:04:06,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:06,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:06,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:06,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:06,599 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2023-01-27 23:04:06,600 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-27 23:04:06,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-01-27 23:04:06,604 INFO L137 encePairwiseOnDemand]: 142/146 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-01-27 23:04:06,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-01-27 23:04:06,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:04:06,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:04:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-01-27 23:04:06,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2023-01-27 23:04:06,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-01-27 23:04:06,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-01-27 23:04:06,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:06,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-01-27 23:04:06,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,638 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 192 transitions. [2023-01-27 23:04:06,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-01-27 23:04:06,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:04:06,646 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-01-27 23:04:06,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-01-27 23:04:06,652 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-01-27 23:04:06,653 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-01-27 23:04:06,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:06,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:06,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:04:06,654 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:06,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:06,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2054649994, now seen corresponding path program 1 times [2023-01-27 23:04:06,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:06,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424284719] [2023-01-27 23:04:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:06,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:06,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:06,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:06,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424284719] [2023-01-27 23:04:06,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424284719] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:06,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:04:06,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:04:06,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066954444] [2023-01-27 23:04:06,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:06,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:04:06,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:06,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:04:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 23:04:06,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:06,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:06,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:06,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:06,862 INFO L130 PetriNetUnfolder]: 35/71 cut-off events. [2023-01-27 23:04:06,862 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-01-27 23:04:06,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 55. Up to 45 conditions per place. [2023-01-27 23:04:06,864 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2023-01-27 23:04:06,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 28 transitions, 135 flow [2023-01-27 23:04:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 23:04:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 23:04:06,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2023-01-27 23:04:06,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2023-01-27 23:04:06,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 254 transitions. [2023-01-27 23:04:06,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 254 transitions. [2023-01-27 23:04:06,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:06,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 254 transitions. [2023-01-27 23:04:06,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,875 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 4 states and 254 transitions. [2023-01-27 23:04:06,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 28 transitions, 135 flow [2023-01-27 23:04:06,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 132 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:04:06,878 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 59 flow [2023-01-27 23:04:06,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=59, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-01-27 23:04:06,879 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2023-01-27 23:04:06,879 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 59 flow [2023-01-27 23:04:06,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:06,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:06,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:06,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:04:06,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:06,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:06,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1524373393, now seen corresponding path program 1 times [2023-01-27 23:04:06,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:06,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21299852] [2023-01-27 23:04:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:06,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:07,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21299852] [2023-01-27 23:04:07,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21299852] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:07,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595853697] [2023-01-27 23:04:07,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:07,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:07,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:07,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:07,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:04:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:07,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 23:04:07,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:07,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:04:07,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:07,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595853697] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:07,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:04:07,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-01-27 23:04:07,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589024213] [2023-01-27 23:04:07,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 23:04:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 23:04:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:04:07,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:07,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:07,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:07,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:07,300 INFO L130 PetriNetUnfolder]: 40/79 cut-off events. [2023-01-27 23:04:07,300 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-01-27 23:04:07,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 79 events. 40/79 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 168 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 53. Up to 39 conditions per place. [2023-01-27 23:04:07,301 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-01-27 23:04:07,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 30 transitions, 165 flow [2023-01-27 23:04:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 23:04:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 23:04:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2023-01-27 23:04:07,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2023-01-27 23:04:07,303 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 254 transitions. [2023-01-27 23:04:07,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 254 transitions. [2023-01-27 23:04:07,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:07,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 254 transitions. [2023-01-27 23:04:07,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,306 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,306 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 59 flow. Second operand 4 states and 254 transitions. [2023-01-27 23:04:07,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 30 transitions, 165 flow [2023-01-27 23:04:07,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 30 transitions, 155 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 23:04:07,308 INFO L231 Difference]: Finished difference. Result has 22 places, 18 transitions, 88 flow [2023-01-27 23:04:07,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=22, PETRI_TRANSITIONS=18} [2023-01-27 23:04:07,309 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 4 predicate places. [2023-01-27 23:04:07,309 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 18 transitions, 88 flow [2023-01-27 23:04:07,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:07,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:07,322 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 23:04:07,515 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 23:04:07,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:07,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:07,516 INFO L85 PathProgramCache]: Analyzing trace with hash 664575342, now seen corresponding path program 2 times [2023-01-27 23:04:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:07,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384079890] [2023-01-27 23:04:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384079890] [2023-01-27 23:04:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384079890] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215346968] [2023-01-27 23:04:07,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:04:07,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:07,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:07,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:07,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:04:07,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:04:07,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:04:07,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 23:04:07,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:07,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:04:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:07,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215346968] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:07,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 23:04:07,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-01-27 23:04:07,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466654423] [2023-01-27 23:04:07,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:07,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:04:07,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:07,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:04:07,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-27 23:04:07,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:07,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 18 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:07,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:07,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:07,875 INFO L130 PetriNetUnfolder]: 76/156 cut-off events. [2023-01-27 23:04:07,875 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-01-27 23:04:07,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 156 events. 76/156 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 490 event pairs, 4 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-01-27 23:04:07,877 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 35 selfloop transitions, 9 changer transitions 2/46 dead transitions. [2023-01-27 23:04:07,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 46 transitions, 285 flow [2023-01-27 23:04:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:04:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:04:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 322 transitions. [2023-01-27 23:04:07,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410958904109589 [2023-01-27 23:04:07,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 322 transitions. [2023-01-27 23:04:07,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 322 transitions. [2023-01-27 23:04:07,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:07,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 322 transitions. [2023-01-27 23:04:07,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 146.0) internal successors, (876), 6 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,883 INFO L175 Difference]: Start difference. First operand has 22 places, 18 transitions, 88 flow. Second operand 5 states and 322 transitions. [2023-01-27 23:04:07,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 46 transitions, 285 flow [2023-01-27 23:04:07,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:04:07,886 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 172 flow [2023-01-27 23:04:07,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-01-27 23:04:07,887 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 12 predicate places. [2023-01-27 23:04:07,887 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 172 flow [2023-01-27 23:04:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:07,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:07,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:07,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:04:08,100 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 23:04:08,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:08,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:08,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1369565425, now seen corresponding path program 1 times [2023-01-27 23:04:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283241054] [2023-01-27 23:04:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:08,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283241054] [2023-01-27 23:04:08,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283241054] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:08,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52548204] [2023-01-27 23:04:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:08,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:08,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:08,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:08,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:04:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:08,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 23:04:08,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:08,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:04:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52548204] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:04:08,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:04:08,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-01-27 23:04:08,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994406277] [2023-01-27 23:04:08,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:04:08,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:04:08,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:08,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:04:08,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:04:08,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:08,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 172 flow. Second operand has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:08,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:08,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:08,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:08,646 INFO L130 PetriNetUnfolder]: 124/248 cut-off events. [2023-01-27 23:04:08,646 INFO L131 PetriNetUnfolder]: For 724/724 co-relation queries the response was YES. [2023-01-27 23:04:08,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 248 events. 124/248 cut-off events. For 724/724 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 947 event pairs, 2 based on Foata normal form. 29/277 useless extension candidates. Maximal degree in co-relation 298. Up to 83 conditions per place. [2023-01-27 23:04:08,651 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 25 selfloop transitions, 13 changer transitions 38/76 dead transitions. [2023-01-27 23:04:08,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 76 transitions, 622 flow [2023-01-27 23:04:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:04:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:04:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 677 transitions. [2023-01-27 23:04:08,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215442092154421 [2023-01-27 23:04:08,654 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 677 transitions. [2023-01-27 23:04:08,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 677 transitions. [2023-01-27 23:04:08,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:08,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 677 transitions. [2023-01-27 23:04:08,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.54545454545455) internal successors, (677), 11 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:08,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:08,660 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 146.0) internal successors, (1752), 12 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:08,661 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 172 flow. Second operand 11 states and 677 transitions. [2023-01-27 23:04:08,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 76 transitions, 622 flow [2023-01-27 23:04:08,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 76 transitions, 614 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 23:04:08,668 INFO L231 Difference]: Finished difference. Result has 46 places, 27 transitions, 247 flow [2023-01-27 23:04:08,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=247, PETRI_PLACES=46, PETRI_TRANSITIONS=27} [2023-01-27 23:04:08,671 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 28 predicate places. [2023-01-27 23:04:08,671 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 27 transitions, 247 flow [2023-01-27 23:04:08,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:08,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:08,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:08,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 23:04:08,877 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 23:04:08,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:08,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:08,877 INFO L85 PathProgramCache]: Analyzing trace with hash -514417009, now seen corresponding path program 2 times [2023-01-27 23:04:08,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:08,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301371681] [2023-01-27 23:04:08,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:08,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:08,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301371681] [2023-01-27 23:04:08,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301371681] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:08,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574794087] [2023-01-27 23:04:08,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:04:08,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:08,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:09,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:09,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:04:09,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:04:09,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:04:09,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 23:04:09,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:09,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:04:09,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574794087] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:09,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:04:09,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-01-27 23:04:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754415570] [2023-01-27 23:04:09,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:09,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:04:09,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:09,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:04:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-01-27 23:04:09,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:09,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 27 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:09,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:09,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:09,164 INFO L130 PetriNetUnfolder]: 48/94 cut-off events. [2023-01-27 23:04:09,164 INFO L131 PetriNetUnfolder]: For 534/534 co-relation queries the response was YES. [2023-01-27 23:04:09,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 94 events. 48/94 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 208 event pairs, 6 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 402. Up to 41 conditions per place. [2023-01-27 23:04:09,165 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 27 selfloop transitions, 4 changer transitions 10/41 dead transitions. [2023-01-27 23:04:09,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 404 flow [2023-01-27 23:04:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:04:09,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:04:09,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 365 transitions. [2023-01-27 23:04:09,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-27 23:04:09,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 365 transitions. [2023-01-27 23:04:09,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 365 transitions. [2023-01-27 23:04:09,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:09,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 365 transitions. [2023-01-27 23:04:09,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 60.833333333333336) internal successors, (365), 6 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,170 INFO L175 Difference]: Start difference. First operand has 46 places, 27 transitions, 247 flow. Second operand 6 states and 365 transitions. [2023-01-27 23:04:09,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 404 flow [2023-01-27 23:04:09,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 335 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-01-27 23:04:09,174 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 183 flow [2023-01-27 23:04:09,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-01-27 23:04:09,174 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-01-27 23:04:09,174 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 183 flow [2023-01-27 23:04:09,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:09,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:09,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 23:04:09,384 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 23:04:09,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:09,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:09,385 INFO L85 PathProgramCache]: Analyzing trace with hash -587854281, now seen corresponding path program 3 times [2023-01-27 23:04:09,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:09,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322999950] [2023-01-27 23:04:09,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:09,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:09,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322999950] [2023-01-27 23:04:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322999950] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:09,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104247801] [2023-01-27 23:04:09,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:04:09,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:09,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:09,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:04:09,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 23:04:09,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:04:09,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-27 23:04:09,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:09,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:09,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:04:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:04:09,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104247801] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:04:09,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:04:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-01-27 23:04:09,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598025090] [2023-01-27 23:04:09,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:04:09,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:04:09,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:04:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:04:09,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:09,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 183 flow. Second operand has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:09,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:09,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:09,818 INFO L130 PetriNetUnfolder]: 65/123 cut-off events. [2023-01-27 23:04:09,818 INFO L131 PetriNetUnfolder]: For 790/790 co-relation queries the response was YES. [2023-01-27 23:04:09,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 123 events. 65/123 cut-off events. For 790/790 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 317 event pairs, 4 based on Foata normal form. 5/128 useless extension candidates. Maximal degree in co-relation 616. Up to 43 conditions per place. [2023-01-27 23:04:09,819 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 26 selfloop transitions, 12 changer transitions 8/46 dead transitions. [2023-01-27 23:04:09,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 433 flow [2023-01-27 23:04:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 23:04:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 23:04:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 429 transitions. [2023-01-27 23:04:09,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197651663405088 [2023-01-27 23:04:09,821 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 429 transitions. [2023-01-27 23:04:09,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 429 transitions. [2023-01-27 23:04:09,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:09,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 429 transitions. [2023-01-27 23:04:09,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 61.285714285714285) internal successors, (429), 7 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 146.0) internal successors, (1168), 8 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,825 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 183 flow. Second operand 7 states and 429 transitions. [2023-01-27 23:04:09,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 433 flow [2023-01-27 23:04:09,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 387 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-01-27 23:04:09,828 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 255 flow [2023-01-27 23:04:09,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-01-27 23:04:09,828 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-01-27 23:04:09,829 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 255 flow [2023-01-27 23:04:09,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 59.7) internal successors, (597), 10 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:09,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:09,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:09,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 23:04:10,035 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 23:04:10,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:10,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1141489714, now seen corresponding path program 4 times [2023-01-27 23:04:10,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:10,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128043708] [2023-01-27 23:04:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:10,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:10,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128043708] [2023-01-27 23:04:10,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128043708] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171118548] [2023-01-27 23:04:10,113 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:04:10,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:10,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:10,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:10,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 23:04:10,172 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:04:10,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:04:10,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 23:04:10,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:10,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:04:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171118548] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:04:10,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:04:10,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-27 23:04:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233588126] [2023-01-27 23:04:10,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:04:10,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:04:10,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:04:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:04:10,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:10,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 255 flow. Second operand has 10 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:10,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:10,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:10,382 INFO L130 PetriNetUnfolder]: 75/144 cut-off events. [2023-01-27 23:04:10,383 INFO L131 PetriNetUnfolder]: For 596/596 co-relation queries the response was YES. [2023-01-27 23:04:10,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 144 events. 75/144 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 407 event pairs, 0 based on Foata normal form. 8/152 useless extension candidates. Maximal degree in co-relation 394. Up to 67 conditions per place. [2023-01-27 23:04:10,384 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 39 selfloop transitions, 18 changer transitions 10/67 dead transitions. [2023-01-27 23:04:10,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 607 flow [2023-01-27 23:04:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:04:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:04:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 786 transitions. [2023-01-27 23:04:10,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41412012644889357 [2023-01-27 23:04:10,387 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 786 transitions. [2023-01-27 23:04:10,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 786 transitions. [2023-01-27 23:04:10,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:10,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 786 transitions. [2023-01-27 23:04:10,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.46153846153846) internal successors, (786), 13 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,393 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,393 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 255 flow. Second operand 13 states and 786 transitions. [2023-01-27 23:04:10,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 607 flow [2023-01-27 23:04:10,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 583 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-27 23:04:10,396 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 395 flow [2023-01-27 23:04:10,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-01-27 23:04:10,397 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 40 predicate places. [2023-01-27 23:04:10,397 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 395 flow [2023-01-27 23:04:10,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:10,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:10,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 23:04:10,603 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 23:04:10,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:10,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash -189341905, now seen corresponding path program 5 times [2023-01-27 23:04:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969171621] [2023-01-27 23:04:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:10,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:10,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:10,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969171621] [2023-01-27 23:04:10,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969171621] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:10,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120154283] [2023-01-27 23:04:10,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 23:04:10,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:10,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:10,667 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:10,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 23:04:10,715 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:04:10,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:04:10,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-27 23:04:10,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:10,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:04:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120154283] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:04:10,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:04:10,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-01-27 23:04:10,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113302593] [2023-01-27 23:04:10,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:04:10,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:04:10,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:10,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:04:10,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:04:10,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:10,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 395 flow. Second operand has 10 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:10,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:10,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:10,940 INFO L130 PetriNetUnfolder]: 100/179 cut-off events. [2023-01-27 23:04:10,940 INFO L131 PetriNetUnfolder]: For 1852/1852 co-relation queries the response was YES. [2023-01-27 23:04:10,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 179 events. 100/179 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 522 event pairs, 0 based on Foata normal form. 12/191 useless extension candidates. Maximal degree in co-relation 914. Up to 113 conditions per place. [2023-01-27 23:04:10,942 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 50 selfloop transitions, 17 changer transitions 11/78 dead transitions. [2023-01-27 23:04:10,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 909 flow [2023-01-27 23:04:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 23:04:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 23:04:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 787 transitions. [2023-01-27 23:04:10,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41464699683877765 [2023-01-27 23:04:10,946 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 787 transitions. [2023-01-27 23:04:10,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 787 transitions. [2023-01-27 23:04:10,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:10,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 787 transitions. [2023-01-27 23:04:10,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.53846153846154) internal successors, (787), 13 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,951 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 146.0) internal successors, (2044), 14 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,951 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 395 flow. Second operand 13 states and 787 transitions. [2023-01-27 23:04:10,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 909 flow [2023-01-27 23:04:10,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 835 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-01-27 23:04:10,959 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 546 flow [2023-01-27 23:04:10,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=546, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-01-27 23:04:10,960 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 56 predicate places. [2023-01-27 23:04:10,960 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 546 flow [2023-01-27 23:04:10,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:10,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:10,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:10,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 23:04:11,166 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 23:04:11,167 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:11,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1556551870, now seen corresponding path program 6 times [2023-01-27 23:04:11,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:11,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550117390] [2023-01-27 23:04:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:04:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550117390] [2023-01-27 23:04:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550117390] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384167266] [2023-01-27 23:04:11,253 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 23:04:11,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:11,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:04:11,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 23:04:11,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 23:04:11,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:04:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 23:04:11,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:11,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:04:11,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:04:11,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384167266] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:04:11,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:04:11,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-01-27 23:04:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14680498] [2023-01-27 23:04:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:04:11,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:04:11,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:11,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:04:11,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-01-27 23:04:11,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:11,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:11,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:11,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:11,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:11,440 INFO L130 PetriNetUnfolder]: 99/189 cut-off events. [2023-01-27 23:04:11,440 INFO L131 PetriNetUnfolder]: For 2064/2064 co-relation queries the response was YES. [2023-01-27 23:04:11,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 189 events. 99/189 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 591 event pairs, 2 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 1086. Up to 112 conditions per place. [2023-01-27 23:04:11,442 INFO L137 encePairwiseOnDemand]: 141/146 looper letters, 17 selfloop transitions, 1 changer transitions 53/71 dead transitions. [2023-01-27 23:04:11,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 851 flow [2023-01-27 23:04:11,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:04:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:04:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2023-01-27 23:04:11,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2023-01-27 23:04:11,464 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 368 transitions. [2023-01-27 23:04:11,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 368 transitions. [2023-01-27 23:04:11,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:11,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 368 transitions. [2023-01-27 23:04:11,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.333333333333336) internal successors, (368), 6 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:11,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:11,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 146.0) internal successors, (1022), 7 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:11,467 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 546 flow. Second operand 6 states and 368 transitions. [2023-01-27 23:04:11,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 851 flow [2023-01-27 23:04:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 728 flow, removed 60 selfloop flow, removed 3 redundant places. [2023-01-27 23:04:11,475 INFO L231 Difference]: Finished difference. Result has 78 places, 17 transitions, 155 flow [2023-01-27 23:04:11,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=78, PETRI_TRANSITIONS=17} [2023-01-27 23:04:11,477 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 60 predicate places. [2023-01-27 23:04:11,477 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 17 transitions, 155 flow [2023-01-27 23:04:11,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.5) internal successors, (351), 6 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:11,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:04:11,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:04:11,485 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 23:04:11,682 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,SelfDestructingSolverStorable9 [2023-01-27 23:04:11,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:04:11,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:04:11,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1217237182, now seen corresponding path program 7 times [2023-01-27 23:04:11,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:04:11,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820405174] [2023-01-27 23:04:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:04:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:04:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:04:11,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:04:11,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820405174] [2023-01-27 23:04:11,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820405174] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:04:11,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766917809] [2023-01-27 23:04:11,806 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 23:04:11,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:11,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:04:11,807 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 23:04:11,809 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 23:04:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:04:11,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-27 23:04:11,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:04:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:04:11,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:04:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:04:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766917809] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:04:12,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:04:12,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2023-01-27 23:04:12,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245580090] [2023-01-27 23:04:12,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:04:12,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 23:04:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:04:12,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 23:04:12,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-27 23:04:12,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 146 [2023-01-27 23:04:12,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 17 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 59.15384615384615) internal successors, (769), 13 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:12,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:04:12,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 146 [2023-01-27 23:04:12,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:04:12,160 INFO L130 PetriNetUnfolder]: 20/56 cut-off events. [2023-01-27 23:04:12,160 INFO L131 PetriNetUnfolder]: For 1161/1161 co-relation queries the response was YES. [2023-01-27 23:04:12,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 56 events. 20/56 cut-off events. For 1161/1161 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 353. Up to 19 conditions per place. [2023-01-27 23:04:12,161 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2023-01-27 23:04:12,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 31 transitions, 359 flow [2023-01-27 23:04:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:04:12,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:04:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 535 transitions. [2023-01-27 23:04:12,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071537290715373 [2023-01-27 23:04:12,163 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 535 transitions. [2023-01-27 23:04:12,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 535 transitions. [2023-01-27 23:04:12,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:04:12,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 535 transitions. [2023-01-27 23:04:12,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 59.44444444444444) internal successors, (535), 9 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:12,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:12,167 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:12,167 INFO L175 Difference]: Start difference. First operand has 78 places, 17 transitions, 155 flow. Second operand 9 states and 535 transitions. [2023-01-27 23:04:12,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 31 transitions, 359 flow [2023-01-27 23:04:12,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 219 flow, removed 52 selfloop flow, removed 24 redundant places. [2023-01-27 23:04:12,169 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-01-27 23:04:12,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-01-27 23:04:12,169 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 25 predicate places. [2023-01-27 23:04:12,169 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-01-27 23:04:12,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 59.15384615384615) internal successors, (769), 13 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:04:12,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:04:12,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:04:12,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:04:12,180 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 23:04:12,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:04:12,373 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1] [2023-01-27 23:04:12,376 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:04:12,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:04:12,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:04:12 BasicIcfg [2023-01-27 23:04:12,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:04:12,379 INFO L158 Benchmark]: Toolchain (without parser) took 8782.36ms. Allocated memory is still 555.7MB. Free memory was 507.5MB in the beginning and 440.1MB in the end (delta: 67.5MB). Peak memory consumption was 69.4MB. Max. memory is 16.0GB. [2023-01-27 23:04:12,379 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 320.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:04:12,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.97ms. Allocated memory is still 555.7MB. Free memory was 507.5MB in the beginning and 497.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 23:04:12,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.22ms. Allocated memory is still 555.7MB. Free memory was 497.1MB in the beginning and 495.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:04:12,380 INFO L158 Benchmark]: Boogie Preprocessor took 16.62ms. Allocated memory is still 555.7MB. Free memory was 495.5MB in the beginning and 494.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:04:12,380 INFO L158 Benchmark]: RCFGBuilder took 267.56ms. Allocated memory is still 555.7MB. Free memory was 494.3MB in the beginning and 482.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 23:04:12,380 INFO L158 Benchmark]: TraceAbstraction took 8279.87ms. Allocated memory is still 555.7MB. Free memory was 481.3MB in the beginning and 440.1MB in the end (delta: 41.2MB). Peak memory consumption was 42.1MB. Max. memory is 16.0GB. [2023-01-27 23:04:12,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 371.2MB. Free memory is still 320.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 187.97ms. Allocated memory is still 555.7MB. Free memory was 507.5MB in the beginning and 497.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.22ms. Allocated memory is still 555.7MB. Free memory was 497.1MB in the beginning and 495.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.62ms. Allocated memory is still 555.7MB. Free memory was 495.5MB in the beginning and 494.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 267.56ms. Allocated memory is still 555.7MB. Free memory was 494.3MB in the beginning and 482.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 8279.87ms. Allocated memory is still 555.7MB. Free memory was 481.3MB in the beginning and 440.1MB in the end (delta: 41.2MB). Peak memory consumption was 42.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 70 PlacesBefore, 18 PlacesAfterwards, 69 TransitionsBefore, 13 TransitionsAfterwards, 368 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 67 TotalNumberOfCompositions, 388 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 388, independent: 388, independent conditional: 0, independent unconditional: 388, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 207, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 388, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 207, unknown conditional: 0, unknown unconditional: 207] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 70]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.1s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 228 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 51 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 955 IncrementalHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 51 mSolverCounterUnsat, 0 mSDtfsCounter, 955 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 180 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=546occurred in iteration=9, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 265 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 331 ConstructedInterpolants, 0 QuantifiedInterpolants, 1932 SizeOfPredicates, 14 NumberOfNonLiveVariables, 1002 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 27 InterpolantComputations, 6 PerfectInterpolantSequences, 34/77 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 23:04:12,404 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...