/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:43:51,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:43:51,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:43:51,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:43:51,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:43:51,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:43:51,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:43:51,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:43:51,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:43:51,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:43:51,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:43:51,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:43:51,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:43:51,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:43:51,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:43:51,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:43:51,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:43:51,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:43:51,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:43:51,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:43:51,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:43:51,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:43:51,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:43:51,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:43:51,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:43:51,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:43:51,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:43:51,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:43:51,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:43:51,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:43:51,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:43:51,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:43:51,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:43:51,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:43:51,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:43:51,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:43:51,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:43:51,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:43:51,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:43:51,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:43:51,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:43:51,952 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 [2023-01-28 07:43:51,976 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:43:51,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:43:51,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:43:51,977 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:43:51,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:43:51,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:43:51,978 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:43:51,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:43:51,978 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:43:51,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:43:51,979 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:43:51,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:43:51,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:43:51,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:43:51,981 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:43:52,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:43:52,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:43:52,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:43:52,190 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:43:52,191 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:43:52,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-01-28 07:43:53,100 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:43:53,312 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:43:53,312 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-01-28 07:43:53,321 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04428d8be/3d4c4348829f416d9e6805027e01fbd0/FLAGb766dc2a0 [2023-01-28 07:43:53,706 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04428d8be/3d4c4348829f416d9e6805027e01fbd0 [2023-01-28 07:43:53,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:43:53,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:43:53,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:43:53,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:43:53,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:43:53,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:43:53" (1/1) ... [2023-01-28 07:43:53,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa78d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:53, skipping insertion in model container [2023-01-28 07:43:53,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:43:53" (1/1) ... [2023-01-28 07:43:53,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:43:53,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:43:53,848 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-01-28 07:43:53,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:43:53,944 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:43:53,955 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2023-01-28 07:43:53,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:43:54,001 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:43:54,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54 WrapperNode [2023-01-28 07:43:54,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:43:54,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:43:54,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:43:54,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:43:54,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,030 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-01-28 07:43:54,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:43:54,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:43:54,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:43:54,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:43:54,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:43:54,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:43:54,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:43:54,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:43:54,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (1/1) ... [2023-01-28 07:43:54,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:43:54,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:43:54,071 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) [2023-01-28 07:43:54,078 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 [2023-01-28 07:43:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:43:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-01-28 07:43:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-01-28 07:43:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:43:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:43:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:43:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:43:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:43:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:43:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:43:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:43:54,119 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:43:54,260 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:43:54,261 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:43:54,511 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:43:54,522 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:43:54,522 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 07:43:54,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:43:54 BoogieIcfgContainer [2023-01-28 07:43:54,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:43:54,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:43:54,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:43:54,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:43:54,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:43:53" (1/3) ... [2023-01-28 07:43:54,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b60ca85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:43:54, skipping insertion in model container [2023-01-28 07:43:54,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:43:54" (2/3) ... [2023-01-28 07:43:54,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b60ca85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:43:54, skipping insertion in model container [2023-01-28 07:43:54,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:43:54" (3/3) ... [2023-01-28 07:43:54,529 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2023-01-28 07:43:54,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:43:54,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:43:54,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:43:54,593 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:43:54,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 128 transitions, 261 flow [2023-01-28 07:43:54,651 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2023-01-28 07:43:54,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:43:54,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-01-28 07:43:54,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 128 transitions, 261 flow [2023-01-28 07:43:54,661 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 127 transitions, 257 flow [2023-01-28 07:43:54,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:43:54,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 127 transitions, 257 flow [2023-01-28 07:43:54,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 127 transitions, 257 flow [2023-01-28 07:43:54,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 127 transitions, 257 flow [2023-01-28 07:43:54,714 INFO L130 PetriNetUnfolder]: 10/127 cut-off events. [2023-01-28 07:43:54,714 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:43:54,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 127 events. 10/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-01-28 07:43:54,717 INFO L119 LiptonReduction]: Number of co-enabled transitions 3920 [2023-01-28 07:43:57,798 INFO L134 LiptonReduction]: Checked pairs total: 5367 [2023-01-28 07:43:57,798 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-01-28 07:43:57,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:43:57,812 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;@23c40b4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:43:57,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 07:43:57,816 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 07:43:57,816 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:43:57,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:43:57,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 07:43:57,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:43:57,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:43:57,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2035688472, now seen corresponding path program 1 times [2023-01-28 07:43:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:43:57,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636714325] [2023-01-28 07:43:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:43:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:43:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:43:58,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:43:58,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:43:58,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636714325] [2023-01-28 07:43:58,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636714325] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:43:58,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:43:58,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:43:58,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758881969] [2023-01-28 07:43:58,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:43:58,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:43:58,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:43:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:43:58,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:43:58,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 253 [2023-01-28 07:43:58,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 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) [2023-01-28 07:43:58,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:43:58,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 253 [2023-01-28 07:43:58,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:43:58,399 INFO L130 PetriNetUnfolder]: 135/242 cut-off events. [2023-01-28 07:43:58,399 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:43:58,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 242 events. 135/242 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 708 event pairs, 54 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 479. Up to 198 conditions per place. [2023-01-28 07:43:58,405 INFO L137 encePairwiseOnDemand]: 246/253 looper letters, 36 selfloop transitions, 4 changer transitions 2/43 dead transitions. [2023-01-28 07:43:58,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 43 transitions, 173 flow [2023-01-28 07:43:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:43:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:43:58,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 408 transitions. [2023-01-28 07:43:58,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031620553359684 [2023-01-28 07:43:58,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 408 transitions. [2023-01-28 07:43:58,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 408 transitions. [2023-01-28 07:43:58,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:43:58,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 408 transitions. [2023-01-28 07:43:58,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2023-01-28 07:43:58,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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) [2023-01-28 07:43:58,437 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 253.0) internal successors, (1265), 5 states have internal predecessors, (1265), 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) [2023-01-28 07:43:58,438 INFO L175 Difference]: Start difference. First operand has 25 places, 27 transitions, 57 flow. Second operand 4 states and 408 transitions. [2023-01-28 07:43:58,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 43 transitions, 173 flow [2023-01-28 07:43:58,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 43 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:43:58,441 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 79 flow [2023-01-28 07:43:58,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-01-28 07:43:58,446 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-01-28 07:43:58,446 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 79 flow [2023-01-28 07:43:58,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 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) [2023-01-28 07:43:58,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:43:58,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:43:58,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:43:58,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:43:58,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:43:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash -821612424, now seen corresponding path program 1 times [2023-01-28 07:43:58,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:43:58,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76969316] [2023-01-28 07:43:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:43:58,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:43:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:43:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:43:58,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:43:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76969316] [2023-01-28 07:43:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76969316] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:43:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:43:58,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:43:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546360602] [2023-01-28 07:43:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:43:58,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:43:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:43:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:43:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:43:58,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-01-28 07:43:58,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-01-28 07:43:58,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:43:58,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-01-28 07:43:58,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:43:58,625 INFO L130 PetriNetUnfolder]: 197/359 cut-off events. [2023-01-28 07:43:58,626 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-01-28 07:43:58,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 359 events. 197/359 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1162 event pairs, 39 based on Foata normal form. 14/307 useless extension candidates. Maximal degree in co-relation 781. Up to 226 conditions per place. [2023-01-28 07:43:58,627 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2023-01-28 07:43:58,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 46 transitions, 211 flow [2023-01-28 07:43:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:43:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:43:58,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-01-28 07:43:58,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4400527009222661 [2023-01-28 07:43:58,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-01-28 07:43:58,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-01-28 07:43:58,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:43:58,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-01-28 07:43:58,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-01-28 07:43:58,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2023-01-28 07:43:58,631 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2023-01-28 07:43:58,631 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 79 flow. Second operand 3 states and 334 transitions. [2023-01-28 07:43:58,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 46 transitions, 211 flow [2023-01-28 07:43:58,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:43:58,633 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 114 flow [2023-01-28 07:43:58,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-01-28 07:43:58,634 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2023-01-28 07:43:58,634 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 114 flow [2023-01-28 07:43:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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) [2023-01-28 07:43:58,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:43:58,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:43:58,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:43:58,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:43:58,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:43:58,635 INFO L85 PathProgramCache]: Analyzing trace with hash 178518608, now seen corresponding path program 2 times [2023-01-28 07:43:58,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:43:58,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953498003] [2023-01-28 07:43:58,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:43:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:43:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:43:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:43:58,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:43:58,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953498003] [2023-01-28 07:43:58,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953498003] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:43:58,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:43:58,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:43:58,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500964230] [2023-01-28 07:43:58,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:43:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:43:58,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:43:58,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:43:58,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:43:58,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 253 [2023-01-28 07:43:58,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 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) [2023-01-28 07:43:58,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:43:58,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 253 [2023-01-28 07:43:58,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:43:58,800 INFO L130 PetriNetUnfolder]: 29/78 cut-off events. [2023-01-28 07:43:58,801 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-01-28 07:43:58,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 78 events. 29/78 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 1 based on Foata normal form. 12/82 useless extension candidates. Maximal degree in co-relation 193. Up to 47 conditions per place. [2023-01-28 07:43:58,802 INFO L137 encePairwiseOnDemand]: 249/253 looper letters, 23 selfloop transitions, 3 changer transitions 2/29 dead transitions. [2023-01-28 07:43:58,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 151 flow [2023-01-28 07:43:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:43:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:43:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-01-28 07:43:58,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2023-01-28 07:43:58,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-01-28 07:43:58,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-01-28 07:43:58,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:43:58,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-01-28 07:43:58,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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) [2023-01-28 07:43:58,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2023-01-28 07:43:58,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2023-01-28 07:43:58,808 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 114 flow. Second operand 3 states and 309 transitions. [2023-01-28 07:43:58,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 151 flow [2023-01-28 07:43:58,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 141 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 07:43:58,811 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 84 flow [2023-01-28 07:43:58,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-28 07:43:58,812 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-01-28 07:43:58,812 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 84 flow [2023-01-28 07:43:58,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 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) [2023-01-28 07:43:58,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:43:58,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:43:58,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:43:58,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:43:58,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:43:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash 206580876, now seen corresponding path program 1 times [2023-01-28 07:43:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:43:58,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332464423] [2023-01-28 07:43:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:43:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:43:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:43:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:43:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:43:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332464423] [2023-01-28 07:43:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332464423] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:43:59,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:43:59,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 07:43:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542051697] [2023-01-28 07:43:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:43:59,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 07:43:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:43:59,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 07:43:59,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 07:43:59,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 253 [2023-01-28 07:43:59,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 85.375) internal successors, (683), 8 states have internal predecessors, (683), 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) [2023-01-28 07:43:59,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:43:59,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 253 [2023-01-28 07:43:59,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:43:59,430 INFO L130 PetriNetUnfolder]: 29/89 cut-off events. [2023-01-28 07:43:59,430 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-01-28 07:43:59,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 89 events. 29/89 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 213 event pairs, 9 based on Foata normal form. 2/83 useless extension candidates. Maximal degree in co-relation 219. Up to 58 conditions per place. [2023-01-28 07:43:59,431 INFO L137 encePairwiseOnDemand]: 243/253 looper letters, 34 selfloop transitions, 8 changer transitions 1/44 dead transitions. [2023-01-28 07:43:59,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 224 flow [2023-01-28 07:43:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 07:43:59,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 07:43:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 719 transitions. [2023-01-28 07:43:59,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35523715415019763 [2023-01-28 07:43:59,433 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 719 transitions. [2023-01-28 07:43:59,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 719 transitions. [2023-01-28 07:43:59,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:43:59,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 719 transitions. [2023-01-28 07:43:59,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.875) internal successors, (719), 8 states have internal predecessors, (719), 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) [2023-01-28 07:43:59,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 253.0) internal successors, (2277), 9 states have internal predecessors, (2277), 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) [2023-01-28 07:43:59,439 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 253.0) internal successors, (2277), 9 states have internal predecessors, (2277), 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) [2023-01-28 07:43:59,439 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 84 flow. Second operand 8 states and 719 transitions. [2023-01-28 07:43:59,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 224 flow [2023-01-28 07:43:59,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 210 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 07:43:59,447 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 144 flow [2023-01-28 07:43:59,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-01-28 07:43:59,448 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 15 predicate places. [2023-01-28 07:43:59,448 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 144 flow [2023-01-28 07:43:59,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.375) internal successors, (683), 8 states have internal predecessors, (683), 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) [2023-01-28 07:43:59,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:43:59,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:43:59,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:43:59,449 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:43:59,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:43:59,450 INFO L85 PathProgramCache]: Analyzing trace with hash 429077015, now seen corresponding path program 1 times [2023-01-28 07:43:59,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:43:59,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90798901] [2023-01-28 07:43:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:43:59,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:43:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:43:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:43:59,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:43:59,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90798901] [2023-01-28 07:43:59,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90798901] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:43:59,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:43:59,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:43:59,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480059939] [2023-01-28 07:43:59,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:43:59,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:43:59,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:43:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:43:59,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:43:59,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 253 [2023-01-28 07:43:59,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:43:59,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:43:59,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 253 [2023-01-28 07:43:59,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:43:59,672 INFO L130 PetriNetUnfolder]: 37/105 cut-off events. [2023-01-28 07:43:59,672 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-01-28 07:43:59,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 105 events. 37/105 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 250 event pairs, 3 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 292. Up to 34 conditions per place. [2023-01-28 07:43:59,673 INFO L137 encePairwiseOnDemand]: 245/253 looper letters, 43 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2023-01-28 07:43:59,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 345 flow [2023-01-28 07:43:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:43:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:43:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2023-01-28 07:43:59,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968379446640316 [2023-01-28 07:43:59,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2023-01-28 07:43:59,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2023-01-28 07:43:59,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:43:59,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2023-01-28 07:43:59,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 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) [2023-01-28 07:43:59,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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) [2023-01-28 07:43:59,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 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) [2023-01-28 07:43:59,680 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 144 flow. Second operand 5 states and 502 transitions. [2023-01-28 07:43:59,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 345 flow [2023-01-28 07:43:59,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 334 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 07:43:59,681 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 195 flow [2023-01-28 07:43:59,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-01-28 07:43:59,682 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 19 predicate places. [2023-01-28 07:43:59,682 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 195 flow [2023-01-28 07:43:59,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:43:59,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:43:59,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:43:59,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:43:59,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:43:59,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:43:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash 834094987, now seen corresponding path program 2 times [2023-01-28 07:43:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:43:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989954309] [2023-01-28 07:43:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:43:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:43:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:00,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:00,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:44:00,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989954309] [2023-01-28 07:44:00,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989954309] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:44:00,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119499836] [2023-01-28 07:44:00,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 07:44:00,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:44:00,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:44:00,117 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) [2023-01-28 07:44:00,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 07:44:00,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 07:44:00,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:44:00,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 57 conjunts are in the unsatisfiable core [2023-01-28 07:44:00,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:44:00,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-01-28 07:44:00,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 07:44:00,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 07:44:00,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-28 07:44:00,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-28 07:44:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:00,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 07:44:00,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119499836] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:44:00,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 07:44:00,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2023-01-28 07:44:00,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81437700] [2023-01-28 07:44:00,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:44:00,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 07:44:00,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:44:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 07:44:00,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-01-28 07:44:00,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 253 [2023-01-28 07:44:00,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 195 flow. Second operand has 10 states, 10 states have (on average 85.6) internal successors, (856), 10 states have internal predecessors, (856), 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) [2023-01-28 07:44:00,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:44:00,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 253 [2023-01-28 07:44:00,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:44:00,750 INFO L130 PetriNetUnfolder]: 35/107 cut-off events. [2023-01-28 07:44:00,750 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-01-28 07:44:00,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 107 events. 35/107 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 243 event pairs, 5 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 337. Up to 55 conditions per place. [2023-01-28 07:44:00,751 INFO L137 encePairwiseOnDemand]: 245/253 looper letters, 45 selfloop transitions, 11 changer transitions 1/58 dead transitions. [2023-01-28 07:44:00,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 394 flow [2023-01-28 07:44:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 07:44:00,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 07:44:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 897 transitions. [2023-01-28 07:44:00,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2023-01-28 07:44:00,753 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 897 transitions. [2023-01-28 07:44:00,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 897 transitions. [2023-01-28 07:44:00,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:44:00,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 897 transitions. [2023-01-28 07:44:00,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 89.7) internal successors, (897), 10 states have internal predecessors, (897), 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) [2023-01-28 07:44:00,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 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) [2023-01-28 07:44:00,758 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 253.0) internal successors, (2783), 11 states have internal predecessors, (2783), 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) [2023-01-28 07:44:00,758 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 195 flow. Second operand 10 states and 897 transitions. [2023-01-28 07:44:00,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 394 flow [2023-01-28 07:44:00,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 386 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 07:44:00,760 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 253 flow [2023-01-28 07:44:00,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-01-28 07:44:00,760 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2023-01-28 07:44:00,761 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 253 flow [2023-01-28 07:44:00,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.6) internal successors, (856), 10 states have internal predecessors, (856), 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) [2023-01-28 07:44:00,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:44:00,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:44:00,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 07:44:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 07:44:00,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:44:00,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:44:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1758691163, now seen corresponding path program 1 times [2023-01-28 07:44:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:44:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624081745] [2023-01-28 07:44:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:44:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:44:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624081745] [2023-01-28 07:44:01,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624081745] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:44:01,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416427128] [2023-01-28 07:44:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:01,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:44:01,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:44:01,553 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) [2023-01-28 07:44:01,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 07:44:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:01,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 79 conjunts are in the unsatisfiable core [2023-01-28 07:44:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:44:01,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-01-28 07:44:01,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 07:44:01,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 07:44:01,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-01-28 07:44:01,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-01-28 07:44:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:01,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:44:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:02,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416427128] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 07:44:02,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 07:44:02,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 8] total 30 [2023-01-28 07:44:02,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868503213] [2023-01-28 07:44:02,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:44:02,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 07:44:02,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:44:02,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 07:44:02,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2023-01-28 07:44:02,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 253 [2023-01-28 07:44:02,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 253 flow. Second operand has 12 states, 12 states have (on average 79.5) internal successors, (954), 12 states have internal predecessors, (954), 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) [2023-01-28 07:44:02,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:44:02,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 253 [2023-01-28 07:44:02,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:44:02,844 INFO L130 PetriNetUnfolder]: 86/239 cut-off events. [2023-01-28 07:44:02,844 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-01-28 07:44:02,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 239 events. 86/239 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 805 event pairs, 12 based on Foata normal form. 20/259 useless extension candidates. Maximal degree in co-relation 790. Up to 59 conditions per place. [2023-01-28 07:44:02,845 INFO L137 encePairwiseOnDemand]: 238/253 looper letters, 58 selfloop transitions, 39 changer transitions 32/130 dead transitions. [2023-01-28 07:44:02,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 130 transitions, 923 flow [2023-01-28 07:44:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-01-28 07:44:02,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-01-28 07:44:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2151 transitions. [2023-01-28 07:44:02,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32699908786865306 [2023-01-28 07:44:02,850 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2151 transitions. [2023-01-28 07:44:02,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2151 transitions. [2023-01-28 07:44:02,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:44:02,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2151 transitions. [2023-01-28 07:44:02,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 82.73076923076923) internal successors, (2151), 26 states have internal predecessors, (2151), 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) [2023-01-28 07:44:02,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 253.0) internal successors, (6831), 27 states have internal predecessors, (6831), 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) [2023-01-28 07:44:02,860 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 253.0) internal successors, (6831), 27 states have internal predecessors, (6831), 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) [2023-01-28 07:44:02,860 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 253 flow. Second operand 26 states and 2151 transitions. [2023-01-28 07:44:02,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 130 transitions, 923 flow [2023-01-28 07:44:02,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 903 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-28 07:44:02,864 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 569 flow [2023-01-28 07:44:02,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=569, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2023-01-28 07:44:02,864 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 60 predicate places. [2023-01-28 07:44:02,865 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 569 flow [2023-01-28 07:44:02,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 79.5) internal successors, (954), 12 states have internal predecessors, (954), 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) [2023-01-28 07:44:02,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:44:02,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:44:02,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 07:44:03,069 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,SelfDestructingSolverStorable6 [2023-01-28 07:44:03,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-01-28 07:44:03,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:44:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1932590508, now seen corresponding path program 2 times [2023-01-28 07:44:03,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:44:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059850598] [2023-01-28 07:44:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:44:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 07:44:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:44:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059850598] [2023-01-28 07:44:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059850598] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:44:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542886837] [2023-01-28 07:44:03,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 07:44:03,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:44:03,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:44:03,724 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) [2023-01-28 07:44:03,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 07:44:03,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 07:44:03,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 07:44:03,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-28 07:44:03,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:44:03,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-28 07:44:04,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-28 07:44:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:04,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:44:04,239 INFO L321 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-01-28 07:44:04,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-01-28 07:44:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:04,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542886837] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:44:04,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:44:04,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 30 [2023-01-28 07:44:04,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867555839] [2023-01-28 07:44:04,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:44:04,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 07:44:04,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:44:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 07:44:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2023-01-28 07:44:04,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 253 [2023-01-28 07:44:04,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 569 flow. Second operand has 30 states, 30 states have (on average 80.06666666666666) internal successors, (2402), 30 states have internal predecessors, (2402), 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) [2023-01-28 07:44:04,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:44:04,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 253 [2023-01-28 07:44:04,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:44:04,684 INFO L130 PetriNetUnfolder]: 49/164 cut-off events. [2023-01-28 07:44:04,684 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-01-28 07:44:04,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 164 events. 49/164 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 445 event pairs, 9 based on Foata normal form. 14/178 useless extension candidates. Maximal degree in co-relation 658. Up to 83 conditions per place. [2023-01-28 07:44:04,684 INFO L137 encePairwiseOnDemand]: 239/253 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2023-01-28 07:44:04,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 76 transitions, 745 flow [2023-01-28 07:44:04,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 07:44:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 07:44:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1295 transitions. [2023-01-28 07:44:04,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3199110671936759 [2023-01-28 07:44:04,688 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1295 transitions. [2023-01-28 07:44:04,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1295 transitions. [2023-01-28 07:44:04,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:44:04,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1295 transitions. [2023-01-28 07:44:04,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 80.9375) internal successors, (1295), 16 states have internal predecessors, (1295), 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) [2023-01-28 07:44:04,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 253.0) internal successors, (4301), 17 states have internal predecessors, (4301), 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) [2023-01-28 07:44:04,697 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 253.0) internal successors, (4301), 17 states have internal predecessors, (4301), 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) [2023-01-28 07:44:04,697 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 569 flow. Second operand 16 states and 1295 transitions. [2023-01-28 07:44:04,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 76 transitions, 745 flow [2023-01-28 07:44:04,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 76 transitions, 645 flow, removed 42 selfloop flow, removed 5 redundant places. [2023-01-28 07:44:04,700 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2023-01-28 07:44:04,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2023-01-28 07:44:04,700 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2023-01-28 07:44:04,700 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2023-01-28 07:44:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 80.06666666666666) internal successors, (2402), 30 states have internal predecessors, (2402), 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) [2023-01-28 07:44:04,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-01-28 07:44:04,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-28 07:44:04,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-01-28 07:44:04,703 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-01-28 07:44:04,704 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-28 07:44:04,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 07:44:04,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:44:04,908 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1] [2023-01-28 07:44:04,912 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:44:04,912 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:44:04,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:44:04 BasicIcfg [2023-01-28 07:44:04,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:44:04,914 INFO L158 Benchmark]: Toolchain (without parser) took 11205.20ms. Allocated memory was 771.8MB in the beginning and 960.5MB in the end (delta: 188.7MB). Free memory was 730.7MB in the beginning and 789.1MB in the end (delta: -58.4MB). Peak memory consumption was 133.1MB. Max. memory is 16.0GB. [2023-01-28 07:44:04,914 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory is still 334.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:44:04,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.12ms. Allocated memory is still 771.8MB. Free memory was 730.3MB in the beginning and 710.9MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 07:44:04,914 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.18ms. Allocated memory is still 771.8MB. Free memory was 710.9MB in the beginning and 708.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:44:04,914 INFO L158 Benchmark]: Boogie Preprocessor took 18.08ms. Allocated memory is still 771.8MB. Free memory was 708.8MB in the beginning and 707.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:44:04,915 INFO L158 Benchmark]: RCFGBuilder took 474.75ms. Allocated memory is still 771.8MB. Free memory was 706.7MB in the beginning and 691.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:44:04,915 INFO L158 Benchmark]: TraceAbstraction took 10388.26ms. Allocated memory was 771.8MB in the beginning and 960.5MB in the end (delta: 188.7MB). Free memory was 690.5MB in the beginning and 789.1MB in the end (delta: -98.7MB). Peak memory consumption was 93.2MB. Max. memory is 16.0GB. [2023-01-28 07:44:04,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 385.9MB. Free memory is still 334.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 292.12ms. Allocated memory is still 771.8MB. Free memory was 730.3MB in the beginning and 710.9MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.18ms. Allocated memory is still 771.8MB. Free memory was 710.9MB in the beginning and 708.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.08ms. Allocated memory is still 771.8MB. Free memory was 708.8MB in the beginning and 707.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 474.75ms. Allocated memory is still 771.8MB. Free memory was 706.7MB in the beginning and 691.2MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 10388.26ms. Allocated memory was 771.8MB in the beginning and 960.5MB in the end (delta: 188.7MB). Free memory was 690.5MB in the beginning and 789.1MB in the end (delta: -98.7MB). Peak memory consumption was 93.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 121 PlacesBefore, 25 PlacesAfterwards, 127 TransitionsBefore, 27 TransitionsAfterwards, 3920 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 5367 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3848, independent: 3700, independent conditional: 0, independent unconditional: 3700, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2274, independent: 2234, independent conditional: 0, independent unconditional: 2234, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3848, independent: 1466, independent conditional: 0, independent unconditional: 1466, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 2274, unknown conditional: 0, unknown unconditional: 2274] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 170 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.3s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 340 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 340 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1375 IncrementalHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 0 mSDtfsCounter, 1375 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1275 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=569occurred in iteration=7, InterpolantAutomatonStates: 75, 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, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 203 ConstructedInterpolants, 7 QuantifiedInterpolants, 2826 SizeOfPredicates, 70 NumberOfNonLiveVariables, 681 ConjunctsInSsa, 178 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 26/37 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:44:04,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...