/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 03:27:41,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 03:27:41,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 03:27:42,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 03:27:42,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 03:27:42,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 03:27:42,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 03:27:42,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 03:27:42,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 03:27:42,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 03:27:42,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 03:27:42,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 03:27:42,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 03:27:42,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 03:27:42,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 03:27:42,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 03:27:42,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 03:27:42,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 03:27:42,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 03:27:42,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 03:27:42,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 03:27:42,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 03:27:42,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 03:27:42,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 03:27:42,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 03:27:42,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 03:27:42,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 03:27:42,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 03:27:42,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 03:27:42,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 03:27:42,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 03:27:42,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 03:27:42,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 03:27:42,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 03:27:42,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 03:27:42,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 03:27:42,042 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 03:27:42,062 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 03:27:42,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 03:27:42,063 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 03:27:42,063 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 03:27:42,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 03:27:42,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 03:27:42,064 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 03:27:42,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 03:27:42,064 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 03:27:42,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 03:27:42,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 03:27:42,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 03:27:42,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 03:27:42,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 03:27:42,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 03:27:42,065 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 03:27:42,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:27:42,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 03:27:42,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 03:27:42,067 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 03:27:42,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 03:27:42,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 03:27:42,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 03:27:42,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 03:27:42,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 03:27:42,266 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 03:27:42,266 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 03:27:42,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-01-28 03:27:43,316 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 03:27:43,469 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 03:27:43,469 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-01-28 03:27:43,474 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b649239/7ab67223b117455285db7ed99417f583/FLAGe03f4b411 [2023-01-28 03:27:43,873 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5b649239/7ab67223b117455285db7ed99417f583 [2023-01-28 03:27:43,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 03:27:43,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 03:27:43,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 03:27:43,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 03:27:43,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 03:27:43,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b218f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:43, skipping insertion in model container [2023-01-28 03:27:43,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 03:27:43" (1/1) ... [2023-01-28 03:27:43,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 03:27:43,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 03:27:44,016 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-01-28 03:27:44,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:27:44,028 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 03:27:44,042 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c[3057,3070] [2023-01-28 03:27:44,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 03:27:44,050 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:27:44,050 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 03:27:44,054 INFO L208 MainTranslator]: Completed translation [2023-01-28 03:27:44,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44 WrapperNode [2023-01-28 03:27:44,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 03:27:44,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 03:27:44,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 03:27:44,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 03:27:44,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,089 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 129 [2023-01-28 03:27:44,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 03:27:44,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 03:27:44,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 03:27:44,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 03:27:44,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 03:27:44,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 03:27:44,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 03:27:44,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 03:27:44,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (1/1) ... [2023-01-28 03:27:44,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 03:27:44,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:27:44,141 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 03:27:44,145 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 03:27:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 03:27:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 03:27:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 03:27:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 03:27:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 03:27:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 03:27:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 03:27:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 03:27:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 03:27:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 03:27:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 03:27:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 03:27:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 03:27:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 03:27:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 03:27:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 03:27:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 03:27:44,178 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 03:27:44,267 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 03:27:44,268 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 03:27:44,504 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 03:27:44,556 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 03:27:44,556 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 03:27:44,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:27:44 BoogieIcfgContainer [2023-01-28 03:27:44,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 03:27:44,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 03:27:44,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 03:27:44,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 03:27:44,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 03:27:43" (1/3) ... [2023-01-28 03:27:44,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdb2c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:27:44, skipping insertion in model container [2023-01-28 03:27:44,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 03:27:44" (2/3) ... [2023-01-28 03:27:44,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdb2c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 03:27:44, skipping insertion in model container [2023-01-28 03:27:44,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 03:27:44" (3/3) ... [2023-01-28 03:27:44,563 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-01-28 03:27:44,575 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 03:27:44,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 03:27:44,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 03:27:44,623 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 03:27:44,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 169 transitions, 362 flow [2023-01-28 03:27:44,699 INFO L130 PetriNetUnfolder]: 12/166 cut-off events. [2023-01-28 03:27:44,699 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:27:44,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 12/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-01-28 03:27:44,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 169 transitions, 362 flow [2023-01-28 03:27:44,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 156 transitions, 330 flow [2023-01-28 03:27:44,709 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 03:27:44,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 156 transitions, 330 flow [2023-01-28 03:27:44,716 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 156 transitions, 330 flow [2023-01-28 03:27:44,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 330 flow [2023-01-28 03:27:44,743 INFO L130 PetriNetUnfolder]: 12/156 cut-off events. [2023-01-28 03:27:44,743 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:27:44,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 12/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-01-28 03:27:44,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 1134 [2023-01-28 03:27:48,978 INFO L134 LiptonReduction]: Checked pairs total: 1738 [2023-01-28 03:27:48,979 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-01-28 03:27:49,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 03:27:49,019 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;@78ef6310, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 03:27:49,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 03:27:49,029 INFO L130 PetriNetUnfolder]: 3/23 cut-off events. [2023-01-28 03:27:49,029 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 03:27:49,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:49,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:49,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:27:49,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1074919772, now seen corresponding path program 1 times [2023-01-28 03:27:49,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619998618] [2023-01-28 03:27:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:49,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:49,341 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 03:27:49,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:49,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619998618] [2023-01-28 03:27:49,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619998618] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:49,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:49,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:27:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858910540] [2023-01-28 03:27:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:49,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:27:49,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:27:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:27:49,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-28 03:27:49,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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 03:27:49,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:49,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-28 03:27:49,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:49,487 INFO L130 PetriNetUnfolder]: 282/438 cut-off events. [2023-01-28 03:27:49,487 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-28 03:27:49,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 438 events. 282/438 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1311 event pairs, 173 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 800. Up to 356 conditions per place. [2023-01-28 03:27:49,491 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-01-28 03:27:49,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 164 flow [2023-01-28 03:27:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:27:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:27:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-01-28 03:27:49,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471299093655589 [2023-01-28 03:27:49,503 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-01-28 03:27:49,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-01-28 03:27:49,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:49,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-01-28 03:27:49,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 03:27:49,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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 03:27:49,514 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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 03:27:49,515 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 4 states and 592 transitions. [2023-01-28 03:27:49,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 164 flow [2023-01-28 03:27:49,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 03:27:49,519 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 68 flow [2023-01-28 03:27:49,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-01-28 03:27:49,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-01-28 03:27:49,523 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 68 flow [2023-01-28 03:27:49,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 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 03:27:49,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:49,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:49,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 03:27:49,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:27:49,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash 725544040, now seen corresponding path program 1 times [2023-01-28 03:27:49,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:49,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177847609] [2023-01-28 03:27:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:49,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:49,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177847609] [2023-01-28 03:27:49,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177847609] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:49,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:49,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 03:27:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202550458] [2023-01-28 03:27:49,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:49,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 03:27:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 03:27:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 03:27:49,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-28 03:27:49,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:27:49,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:49,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-28 03:27:49,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:49,709 INFO L130 PetriNetUnfolder]: 344/532 cut-off events. [2023-01-28 03:27:49,709 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-01-28 03:27:49,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 532 events. 344/532 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1709 event pairs, 221 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 397. Up to 438 conditions per place. [2023-01-28 03:27:49,715 INFO L137 encePairwiseOnDemand]: 327/331 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-01-28 03:27:49,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 178 flow [2023-01-28 03:27:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 03:27:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 03:27:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-01-28 03:27:49,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4471299093655589 [2023-01-28 03:27:49,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-01-28 03:27:49,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-01-28 03:27:49,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:49,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-01-28 03:27:49,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 03:27:49,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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 03:27:49,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 331.0) internal successors, (1655), 5 states have internal predecessors, (1655), 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 03:27:49,735 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 4 states and 592 transitions. [2023-01-28 03:27:49,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 178 flow [2023-01-28 03:27:49,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 168 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 03:27:49,736 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 76 flow [2023-01-28 03:27:49,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, 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=76, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-01-28 03:27:49,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-01-28 03:27:49,737 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 76 flow [2023-01-28 03:27:49,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 03:27:49,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:49,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:49,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 03:27:49,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:27:49,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:49,738 INFO L85 PathProgramCache]: Analyzing trace with hash -512809655, now seen corresponding path program 1 times [2023-01-28 03:27:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:49,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586576478] [2023-01-28 03:27:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:49,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:27:49,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586576478] [2023-01-28 03:27:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586576478] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:49,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:49,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 03:27:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713507670] [2023-01-28 03:27:49,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:49,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 03:27:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 03:27:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 03:27:49,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 331 [2023-01-28 03:27:49,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 03:27:49,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:49,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 331 [2023-01-28 03:27:49,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:49,867 INFO L130 PetriNetUnfolder]: 344/533 cut-off events. [2023-01-28 03:27:49,868 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2023-01-28 03:27:49,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 533 events. 344/533 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1621 event pairs, 277 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 469. Up to 533 conditions per place. [2023-01-28 03:27:49,870 INFO L137 encePairwiseOnDemand]: 328/331 looper letters, 25 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-01-28 03:27:49,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 132 flow [2023-01-28 03:27:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 03:27:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 03:27:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-01-28 03:27:49,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446122860020141 [2023-01-28 03:27:49,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-01-28 03:27:49,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-01-28 03:27:49,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:49,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-01-28 03:27:49,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 03:27:49,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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 03:27:49,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 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 03:27:49,875 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 76 flow. Second operand 3 states and 443 transitions. [2023-01-28 03:27:49,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 132 flow [2023-01-28 03:27:49,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 126 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 03:27:49,876 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 82 flow [2023-01-28 03:27:49,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 03:27:49,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-01-28 03:27:49,877 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 82 flow [2023-01-28 03:27:49,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 03:27:49,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:49,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:49,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 03:27:49,878 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:27:49,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:49,878 INFO L85 PathProgramCache]: Analyzing trace with hash -599166117, now seen corresponding path program 1 times [2023-01-28 03:27:49,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:49,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612902088] [2023-01-28 03:27:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:49,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:50,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612902088] [2023-01-28 03:27:50,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612902088] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:27:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466881148] [2023-01-28 03:27:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:50,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:27:50,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:27:50,305 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 03:27:50,353 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 03:27:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:50,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 03:27:50,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:27:50,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2023-01-28 03:27:50,714 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:27:50,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 61 [2023-01-28 03:27:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:50,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:27:50,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:27:50,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 65 [2023-01-28 03:27:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:51,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466881148] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:27:51,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:27:51,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 03:27:51,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650525841] [2023-01-28 03:27:51,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:27:51,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 03:27:51,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:51,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 03:27:51,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-28 03:27:51,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 331 [2023-01-28 03:27:51,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 82 flow. Second operand has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 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 03:27:51,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:51,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 331 [2023-01-28 03:27:51,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:52,039 INFO L130 PetriNetUnfolder]: 1268/1991 cut-off events. [2023-01-28 03:27:52,039 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2023-01-28 03:27:52,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1991 events. 1268/1991 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9306 event pairs, 162 based on Foata normal form. 4/1699 useless extension candidates. Maximal degree in co-relation 4940. Up to 506 conditions per place. [2023-01-28 03:27:52,046 INFO L137 encePairwiseOnDemand]: 322/331 looper letters, 74 selfloop transitions, 14 changer transitions 124/212 dead transitions. [2023-01-28 03:27:52,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 212 transitions, 1043 flow [2023-01-28 03:27:52,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 03:27:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 03:27:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2613 transitions. [2023-01-28 03:27:52,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41548735888058513 [2023-01-28 03:27:52,052 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2613 transitions. [2023-01-28 03:27:52,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2613 transitions. [2023-01-28 03:27:52,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:52,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2613 transitions. [2023-01-28 03:27:52,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 137.52631578947367) internal successors, (2613), 19 states have internal predecessors, (2613), 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 03:27:52,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 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 03:27:52,064 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 331.0) internal successors, (6620), 20 states have internal predecessors, (6620), 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 03:27:52,065 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 82 flow. Second operand 19 states and 2613 transitions. [2023-01-28 03:27:52,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 212 transitions, 1043 flow [2023-01-28 03:27:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 212 transitions, 1039 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 03:27:52,072 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 199 flow [2023-01-28 03:27:52,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=199, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2023-01-28 03:27:52,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2023-01-28 03:27:52,074 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 199 flow [2023-01-28 03:27:52,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 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 03:27:52,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:52,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:52,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 03:27:52,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:27:52,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:27:52,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:52,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1758554723, now seen corresponding path program 2 times [2023-01-28 03:27:52,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:52,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146786240] [2023-01-28 03:27:52,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:52,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 03:27:52,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:52,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146786240] [2023-01-28 03:27:52,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146786240] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 03:27:52,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 03:27:52,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 03:27:52,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132517653] [2023-01-28 03:27:52,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 03:27:52,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 03:27:52,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:27:52,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 03:27:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 03:27:52,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 331 [2023-01-28 03:27:52,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 03:27:52,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:27:52,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 331 [2023-01-28 03:27:52,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:27:53,029 INFO L130 PetriNetUnfolder]: 1073/1714 cut-off events. [2023-01-28 03:27:53,030 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-01-28 03:27:53,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1714 events. 1073/1714 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8071 event pairs, 132 based on Foata normal form. 4/1584 useless extension candidates. Maximal degree in co-relation 6457. Up to 602 conditions per place. [2023-01-28 03:27:53,037 INFO L137 encePairwiseOnDemand]: 325/331 looper letters, 46 selfloop transitions, 5 changer transitions 41/92 dead transitions. [2023-01-28 03:27:53,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 633 flow [2023-01-28 03:27:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 03:27:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 03:27:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 866 transitions. [2023-01-28 03:27:53,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3737591713422529 [2023-01-28 03:27:53,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 866 transitions. [2023-01-28 03:27:53,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 866 transitions. [2023-01-28 03:27:53,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:27:53,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 866 transitions. [2023-01-28 03:27:53,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.71428571428571) internal successors, (866), 7 states have internal predecessors, (866), 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 03:27:53,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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 03:27:53,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 331.0) internal successors, (2648), 8 states have internal predecessors, (2648), 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 03:27:53,046 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 199 flow. Second operand 7 states and 866 transitions. [2023-01-28 03:27:53,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 633 flow [2023-01-28 03:27:53,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 92 transitions, 589 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-01-28 03:27:53,062 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 173 flow [2023-01-28 03:27:53,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-01-28 03:27:53,063 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2023-01-28 03:27:53,063 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 173 flow [2023-01-28 03:27:53,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 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 03:27:53,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:27:53,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:27:53,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 03:27:53,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:27:53,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:27:53,064 INFO L85 PathProgramCache]: Analyzing trace with hash -115692411, now seen corresponding path program 3 times [2023-01-28 03:27:53,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:27:53,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83176596] [2023-01-28 03:27:53,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:27:53,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:27:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:27:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:53,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:27:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83176596] [2023-01-28 03:27:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83176596] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:27:53,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993506763] [2023-01-28 03:27:53,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 03:27:53,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:27:53,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:27:53,502 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 03:27:53,521 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 03:27:53,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 03:27:53,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:27:53,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 03:27:53,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:27:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 03:27:53,698 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 03:27:53,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2023-01-28 03:27:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:27:53,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:27:54,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 18 treesize of output 14 [2023-01-28 03:28:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:00,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993506763] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:00,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:00,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 26 [2023-01-28 03:28:00,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439603919] [2023-01-28 03:28:00,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:00,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 03:28:00,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:00,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 03:28:00,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=601, Unknown=6, NotChecked=0, Total=756 [2023-01-28 03:28:00,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 331 [2023-01-28 03:28:00,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 173 flow. Second operand has 28 states, 28 states have (on average 112.57142857142857) internal successors, (3152), 28 states have internal predecessors, (3152), 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 03:28:00,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:00,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 331 [2023-01-28 03:28:00,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:01,496 INFO L130 PetriNetUnfolder]: 1727/2822 cut-off events. [2023-01-28 03:28:01,497 INFO L131 PetriNetUnfolder]: For 6136/6136 co-relation queries the response was YES. [2023-01-28 03:28:01,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9837 conditions, 2822 events. 1727/2822 cut-off events. For 6136/6136 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15210 event pairs, 111 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 9806. Up to 775 conditions per place. [2023-01-28 03:28:01,514 INFO L137 encePairwiseOnDemand]: 320/331 looper letters, 103 selfloop transitions, 26 changer transitions 157/286 dead transitions. [2023-01-28 03:28:01,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 286 transitions, 1863 flow [2023-01-28 03:28:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 03:28:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 03:28:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3464 transitions. [2023-01-28 03:28:01,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36087092405458904 [2023-01-28 03:28:01,524 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3464 transitions. [2023-01-28 03:28:01,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3464 transitions. [2023-01-28 03:28:01,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:01,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3464 transitions. [2023-01-28 03:28:01,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 119.44827586206897) internal successors, (3464), 29 states have internal predecessors, (3464), 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 03:28:01,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 331.0) internal successors, (9930), 30 states have internal predecessors, (9930), 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 03:28:01,549 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 331.0) internal successors, (9930), 30 states have internal predecessors, (9930), 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 03:28:01,549 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 173 flow. Second operand 29 states and 3464 transitions. [2023-01-28 03:28:01,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 286 transitions, 1863 flow [2023-01-28 03:28:01,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 286 transitions, 1748 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-01-28 03:28:01,569 INFO L231 Difference]: Finished difference. Result has 93 places, 49 transitions, 401 flow [2023-01-28 03:28:01,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=401, PETRI_PLACES=93, PETRI_TRANSITIONS=49} [2023-01-28 03:28:01,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2023-01-28 03:28:01,571 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 49 transitions, 401 flow [2023-01-28 03:28:01,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 112.57142857142857) internal successors, (3152), 28 states have internal predecessors, (3152), 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 03:28:01,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 03:28:01,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 03:28:01,584 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 03:28:01,779 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,SelfDestructingSolverStorable5 [2023-01-28 03:28:01,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 03:28:01,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 03:28:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash 157009709, now seen corresponding path program 4 times [2023-01-28 03:28:01,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 03:28:01,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372248513] [2023-01-28 03:28:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 03:28:01,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 03:28:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 03:28:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 03:28:02,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 03:28:02,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372248513] [2023-01-28 03:28:02,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372248513] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 03:28:02,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286765070] [2023-01-28 03:28:02,126 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 03:28:02,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:02,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 03:28:02,128 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 03:28:02,185 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 03:28:02,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 03:28:02,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 03:28:02,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 03:28:02,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 03:28:02,282 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 03:28:02,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 96 treesize of output 90 [2023-01-28 03:28:02,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 03:28:02,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 03:28:02,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 03:28:02,428 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 03:28:02,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2023-01-28 03:28:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 03:28:02,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 03:28:04,685 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (<= c_~min~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) c_~A~0.base) c_~A~0.offset))) is different from false [2023-01-28 03:28:04,703 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_223 (Array Int Int)) (v_ArrVal_225 (Array Int Int)) (v_ArrVal_224 (Array Int Int))) (< (select (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_223) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_224) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_225) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 1))) is different from false [2023-01-28 03:28:04,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 03:28:04,712 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 41 [2023-01-28 03:28:04,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 423 treesize of output 417 [2023-01-28 03:28:04,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 246 treesize of output 232 [2023-01-28 03:28:04,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 232 treesize of output 224 [2023-01-28 03:28:04,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 126 treesize of output 122 [2023-01-28 03:28:04,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 220 treesize of output 204 [2023-01-28 03:28:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-28 03:28:04,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286765070] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 03:28:04,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 03:28:04,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2023-01-28 03:28:04,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308628868] [2023-01-28 03:28:04,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 03:28:04,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 03:28:04,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 03:28:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 03:28:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=376, Unknown=7, NotChecked=82, Total=552 [2023-01-28 03:28:04,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 331 [2023-01-28 03:28:04,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 49 transitions, 401 flow. Second operand has 24 states, 24 states have (on average 106.95833333333333) internal successors, (2567), 24 states have internal predecessors, (2567), 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 03:28:04,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 03:28:04,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 331 [2023-01-28 03:28:04,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 03:28:07,661 INFO L130 PetriNetUnfolder]: 1469/2486 cut-off events. [2023-01-28 03:28:07,661 INFO L131 PetriNetUnfolder]: For 30865/30865 co-relation queries the response was YES. [2023-01-28 03:28:07,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14203 conditions, 2486 events. 1469/2486 cut-off events. For 30865/30865 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 13193 event pairs, 152 based on Foata normal form. 14/2500 useless extension candidates. Maximal degree in co-relation 14167. Up to 771 conditions per place. [2023-01-28 03:28:07,673 INFO L137 encePairwiseOnDemand]: 323/331 looper letters, 0 selfloop transitions, 0 changer transitions 176/176 dead transitions. [2023-01-28 03:28:07,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 176 transitions, 1841 flow [2023-01-28 03:28:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 03:28:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 03:28:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1783 transitions. [2023-01-28 03:28:07,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33666918429003023 [2023-01-28 03:28:07,677 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1783 transitions. [2023-01-28 03:28:07,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1783 transitions. [2023-01-28 03:28:07,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 03:28:07,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1783 transitions. [2023-01-28 03:28:07,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 111.4375) internal successors, (1783), 16 states have internal predecessors, (1783), 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 03:28:07,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 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 03:28:07,685 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 331.0) internal successors, (5627), 17 states have internal predecessors, (5627), 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 03:28:07,685 INFO L175 Difference]: Start difference. First operand has 93 places, 49 transitions, 401 flow. Second operand 16 states and 1783 transitions. [2023-01-28 03:28:07,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 176 transitions, 1841 flow [2023-01-28 03:28:07,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 176 transitions, 1508 flow, removed 134 selfloop flow, removed 16 redundant places. [2023-01-28 03:28:07,715 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-01-28 03:28:07,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-01-28 03:28:07,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2023-01-28 03:28:07,716 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-01-28 03:28:07,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 106.95833333333333) internal successors, (2567), 24 states have internal predecessors, (2567), 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 03:28:07,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 03:28:07,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 03:28:07,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 03:28:07,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 03:28:07,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 03:28:07,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 03:28:07,924 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-01-28 03:28:07,926 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:28:07,926 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:28:07,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:28:07 BasicIcfg [2023-01-28 03:28:07,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:28:07,928 INFO L158 Benchmark]: Toolchain (without parser) took 24052.71ms. Allocated memory was 377.5MB in the beginning and 696.3MB in the end (delta: 318.8MB). Free memory was 318.3MB in the beginning and 296.3MB in the end (delta: 22.1MB). Peak memory consumption was 342.9MB. Max. memory is 16.0GB. [2023-01-28 03:28:07,928 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 377.5MB. Free memory is still 326.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:28:07,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.16ms. Allocated memory is still 377.5MB. Free memory was 318.1MB in the beginning and 306.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 03:28:07,929 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.61ms. Allocated memory is still 377.5MB. Free memory was 306.3MB in the beginning and 304.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 03:28:07,929 INFO L158 Benchmark]: Boogie Preprocessor took 19.47ms. Allocated memory is still 377.5MB. Free memory was 304.4MB in the beginning and 302.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:28:07,929 INFO L158 Benchmark]: RCFGBuilder took 447.89ms. Allocated memory was 377.5MB in the beginning and 578.8MB in the end (delta: 201.3MB). Free memory was 302.6MB in the beginning and 533.5MB in the end (delta: -230.9MB). Peak memory consumption was 19.9MB. Max. memory is 16.0GB. [2023-01-28 03:28:07,929 INFO L158 Benchmark]: TraceAbstraction took 23368.63ms. Allocated memory was 578.8MB in the beginning and 696.3MB in the end (delta: 117.4MB). Free memory was 533.5MB in the beginning and 296.3MB in the end (delta: 237.3MB). Peak memory consumption was 354.5MB. Max. memory is 16.0GB. [2023-01-28 03:28:07,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 377.5MB. Free memory is still 326.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 178.16ms. Allocated memory is still 377.5MB. Free memory was 318.1MB in the beginning and 306.3MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.61ms. Allocated memory is still 377.5MB. Free memory was 306.3MB in the beginning and 304.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.47ms. Allocated memory is still 377.5MB. Free memory was 304.4MB in the beginning and 302.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 447.89ms. Allocated memory was 377.5MB in the beginning and 578.8MB in the end (delta: 201.3MB). Free memory was 302.6MB in the beginning and 533.5MB in the end (delta: -230.9MB). Peak memory consumption was 19.9MB. Max. memory is 16.0GB. * TraceAbstraction took 23368.63ms. Allocated memory was 578.8MB in the beginning and 696.3MB in the end (delta: 117.4MB). Free memory was 533.5MB in the beginning and 296.3MB in the end (delta: 237.3MB). Peak memory consumption was 354.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 154 PlacesBefore, 31 PlacesAfterwards, 156 TransitionsBefore, 24 TransitionsAfterwards, 1134 CoEnabledTransitionPairs, 7 FixpointIterations, 94 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 162 TotalNumberOfCompositions, 1738 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1289, independent: 1233, independent conditional: 0, independent unconditional: 1233, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 600, independent: 582, independent conditional: 0, independent unconditional: 582, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1289, independent: 651, independent conditional: 0, independent unconditional: 651, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 600, unknown conditional: 0, unknown unconditional: 600] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 115]: 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 7 procedures, 187 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1006 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1006 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 230 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2109 IncrementalHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 0 mSDtfsCounter, 2109 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 108 SyntacticMatches, 3 SemanticMatches, 122 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=401occurred in iteration=6, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 293 ConstructedInterpolants, 18 QuantifiedInterpolants, 2442 SizeOfPredicates, 46 NumberOfNonLiveVariables, 684 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 18/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 03:28:07,995 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...