/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:46:09,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:46:09,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:46:09,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:46:09,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:46:09,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:46:09,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:46:09,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:46:09,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:46:09,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:46:09,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:46:09,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:46:09,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:46:09,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:46:09,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:46:09,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:46:09,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:46:09,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:46:09,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:46:09,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:46:09,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:46:09,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:46:09,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:46:09,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:46:09,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 19:46:09,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 19:46:09,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 19:46:09,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 19:46:09,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 19:46:09,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 19:46:09,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 19:46:09,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 19:46:09,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 19:46:09,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 19:46:09,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 19:46:09,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 19:46:09,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 19:46:09,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 19:46:09,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:46:09,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:46:09,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:46:09,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:46:09,124 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:46:09,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:46:09,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:46:09,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:46:09,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:46:09,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:46:09,127 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:46:09,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:46:09,127 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:46:09,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:46:09,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:46:09,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:46:09,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:46:09,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:46:09,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:46:09,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:46:09,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:46:09,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:46:09,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:46:09,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:46:09,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:46:09,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:46:09,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:46:09,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:46:09,131 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:46:09,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:46:09,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:46:09,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:46:09,363 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:46:09,364 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:46:09,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2023-01-27 19:46:10,571 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:46:10,751 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:46:10,751 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2023-01-27 19:46:10,757 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3283adfad/0115517d636f4c40a2f004cca6c05b3a/FLAG1814d11a3 [2023-01-27 19:46:10,767 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3283adfad/0115517d636f4c40a2f004cca6c05b3a [2023-01-27 19:46:10,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:46:10,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:46:10,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:46:10,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:46:10,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:46:10,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:10,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e9e68c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10, skipping insertion in model container [2023-01-27 19:46:10,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:10,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:46:10,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:46:10,914 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/bench-exp2x6.wvr.c[2453,2466] [2023-01-27 19:46:10,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:46:10,925 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:46:10,943 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/bench-exp2x6.wvr.c[2453,2466] [2023-01-27 19:46:10,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:46:10,955 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:46:10,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10 WrapperNode [2023-01-27 19:46:10,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:46:10,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:46:10,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:46:10,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:46:10,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:10,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:10,984 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-01-27 19:46:10,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:46:10,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:46:10,985 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:46:10,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:46:10,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:10,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:10,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:10,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:11,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:11,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:11,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:11,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:11,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:46:11,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:46:11,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:46:11,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:46:11,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (1/1) ... [2023-01-27 19:46:11,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:46:11,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:46:11,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:46:11,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:46:11,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:46:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 19:46:11,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 19:46:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 19:46:11,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 19:46:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 19:46:11,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 19:46:11,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 19:46:11,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 19:46:11,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:46:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:46:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:46:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:46:11,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:46:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:46:11,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:46:11,088 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:46:11,215 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:46:11,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:46:11,496 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:46:11,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:46:11,504 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 19:46:11,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:46:11 BoogieIcfgContainer [2023-01-27 19:46:11,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:46:11,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:46:11,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:46:11,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:46:11,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:46:10" (1/3) ... [2023-01-27 19:46:11,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcf7604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:46:11, skipping insertion in model container [2023-01-27 19:46:11,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:46:10" (2/3) ... [2023-01-27 19:46:11,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcf7604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:46:11, skipping insertion in model container [2023-01-27 19:46:11,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:46:11" (3/3) ... [2023-01-27 19:46:11,512 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2023-01-27 19:46:11,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:46:11,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:46:11,528 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:46:11,592 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 19:46:11,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 135 transitions, 302 flow [2023-01-27 19:46:11,681 INFO L130 PetriNetUnfolder]: 10/131 cut-off events. [2023-01-27 19:46:11,681 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 19:46:11,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 131 events. 10/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 87 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-01-27 19:46:11,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 135 transitions, 302 flow [2023-01-27 19:46:11,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 119 transitions, 262 flow [2023-01-27 19:46:11,694 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:46:11,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 119 transitions, 262 flow [2023-01-27 19:46:11,705 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 119 transitions, 262 flow [2023-01-27 19:46:11,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 119 transitions, 262 flow [2023-01-27 19:46:11,735 INFO L130 PetriNetUnfolder]: 10/119 cut-off events. [2023-01-27 19:46:11,735 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 19:46:11,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 10/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 86 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2023-01-27 19:46:11,738 INFO L119 LiptonReduction]: Number of co-enabled transitions 2160 [2023-01-27 19:46:14,850 INFO L134 LiptonReduction]: Checked pairs total: 2086 [2023-01-27 19:46:14,851 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-01-27 19:46:14,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:46:14,868 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;@875e8d3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:46:14,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 19:46:14,874 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2023-01-27 19:46:14,874 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 19:46:14,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:14,875 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] [2023-01-27 19:46:14,876 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 2 more)] === [2023-01-27 19:46:14,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1770636196, now seen corresponding path program 1 times [2023-01-27 19:46:14,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:14,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445425058] [2023-01-27 19:46:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:14,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:15,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:15,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445425058] [2023-01-27 19:46:15,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445425058] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:46:15,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:46:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:46:15,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111691501] [2023-01-27 19:46:15,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:46:15,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:46:15,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:46:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:46:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:46:15,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 241 [2023-01-27 19:46:15,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:15,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:46:15,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 241 [2023-01-27 19:46:15,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:46:15,717 INFO L130 PetriNetUnfolder]: 497/677 cut-off events. [2023-01-27 19:46:15,717 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-01-27 19:46:15,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 677 events. 497/677 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1776 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2023-01-27 19:46:15,726 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 41 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-01-27 19:46:15,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 233 flow [2023-01-27 19:46:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:46:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:46:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-01-27 19:46:15,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42323651452282157 [2023-01-27 19:46:15,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-01-27 19:46:15,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-01-27 19:46:15,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:15,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-01-27 19:46:15,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:15,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:15,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:15,753 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 306 transitions. [2023-01-27 19:46:15,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 233 flow [2023-01-27 19:46:15,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 19:46:15,764 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 91 flow [2023-01-27 19:46:15,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-27 19:46:15,770 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-01-27 19:46:15,770 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 91 flow [2023-01-27 19:46:15,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:15,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:15,771 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] [2023-01-27 19:46:15,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:46:15,771 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 2 more)] === [2023-01-27 19:46:15,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:15,774 INFO L85 PathProgramCache]: Analyzing trace with hash 128221475, now seen corresponding path program 1 times [2023-01-27 19:46:15,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:15,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502888324] [2023-01-27 19:46:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:15,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:16,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:16,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502888324] [2023-01-27 19:46:16,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502888324] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:46:16,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:46:16,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:46:16,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236091715] [2023-01-27 19:46:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:46:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:46:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:46:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:46:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:46:16,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 241 [2023-01-27 19:46:16,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:46:16,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 241 [2023-01-27 19:46:16,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:46:16,199 INFO L130 PetriNetUnfolder]: 461/641 cut-off events. [2023-01-27 19:46:16,200 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-01-27 19:46:16,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 641 events. 461/641 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1827 event pairs, 17 based on Foata normal form. 36/677 useless extension candidates. Maximal degree in co-relation 586. Up to 435 conditions per place. [2023-01-27 19:46:16,204 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 50 selfloop transitions, 9 changer transitions 1/60 dead transitions. [2023-01-27 19:46:16,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 60 transitions, 289 flow [2023-01-27 19:46:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:46:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:46:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-01-27 19:46:16,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41286307053941906 [2023-01-27 19:46:16,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-01-27 19:46:16,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-01-27 19:46:16,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:16,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-01-27 19:46:16,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,215 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 91 flow. Second operand 4 states and 398 transitions. [2023-01-27 19:46:16,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 60 transitions, 289 flow [2023-01-27 19:46:16,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 60 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:46:16,217 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 127 flow [2023-01-27 19:46:16,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2023-01-27 19:46:16,217 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-01-27 19:46:16,218 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 127 flow [2023-01-27 19:46:16,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:16,218 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] [2023-01-27 19:46:16,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:46:16,219 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 2 more)] === [2023-01-27 19:46:16,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:16,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1163486377, now seen corresponding path program 1 times [2023-01-27 19:46:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:16,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612400480] [2023-01-27 19:46:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:16,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:16,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612400480] [2023-01-27 19:46:16,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612400480] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:46:16,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:46:16,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:46:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837821237] [2023-01-27 19:46:16,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:46:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:46:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:46:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:46:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:46:16,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 241 [2023-01-27 19:46:16,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:46:16,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 241 [2023-01-27 19:46:16,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:46:16,588 INFO L130 PetriNetUnfolder]: 431/611 cut-off events. [2023-01-27 19:46:16,588 INFO L131 PetriNetUnfolder]: For 498/498 co-relation queries the response was YES. [2023-01-27 19:46:16,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 611 events. 431/611 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1681 event pairs, 101 based on Foata normal form. 30/641 useless extension candidates. Maximal degree in co-relation 523. Up to 405 conditions per place. [2023-01-27 19:46:16,592 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 44 selfloop transitions, 11 changer transitions 11/66 dead transitions. [2023-01-27 19:46:16,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 359 flow [2023-01-27 19:46:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:46:16,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:46:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 398 transitions. [2023-01-27 19:46:16,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41286307053941906 [2023-01-27 19:46:16,594 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 398 transitions. [2023-01-27 19:46:16,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 398 transitions. [2023-01-27 19:46:16,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:16,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 398 transitions. [2023-01-27 19:46:16,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,598 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,598 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 127 flow. Second operand 4 states and 398 transitions. [2023-01-27 19:46:16,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 359 flow [2023-01-27 19:46:16,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 66 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:46:16,600 INFO L231 Difference]: Finished difference. Result has 34 places, 37 transitions, 162 flow [2023-01-27 19:46:16,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=34, PETRI_TRANSITIONS=37} [2023-01-27 19:46:16,601 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-27 19:46:16,601 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 37 transitions, 162 flow [2023-01-27 19:46:16,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:16,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:16,602 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] [2023-01-27 19:46:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 19:46:16,602 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 2 more)] === [2023-01-27 19:46:16,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash 361786717, now seen corresponding path program 2 times [2023-01-27 19:46:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:16,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008306417] [2023-01-27 19:46:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:16,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008306417] [2023-01-27 19:46:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008306417] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:46:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202707415] [2023-01-27 19:46:16,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:46:16,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:46:16,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:46:16,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:46:16,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:46:16,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:46:16,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:46:16,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:46:16,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:46:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:17,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:46:17,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:17,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202707415] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:46:17,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:46:17,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-27 19:46:17,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601425561] [2023-01-27 19:46:17,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:46:17,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:46:17,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:46:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:46:17,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 19:46:17,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 241 [2023-01-27 19:46:17,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:17,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:46:17,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 241 [2023-01-27 19:46:17,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:46:17,548 INFO L130 PetriNetUnfolder]: 863/1203 cut-off events. [2023-01-27 19:46:17,549 INFO L131 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2023-01-27 19:46:17,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 1203 events. 863/1203 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3842 event pairs, 189 based on Foata normal form. 36/1239 useless extension candidates. Maximal degree in co-relation 799. Up to 452 conditions per place. [2023-01-27 19:46:17,555 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 89 selfloop transitions, 14 changer transitions 3/106 dead transitions. [2023-01-27 19:46:17,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 106 transitions, 585 flow [2023-01-27 19:46:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:46:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:46:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2023-01-27 19:46:17,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41770401106500693 [2023-01-27 19:46:17,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2023-01-27 19:46:17,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2023-01-27 19:46:17,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:17,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2023-01-27 19:46:17,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:17,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:17,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:17,564 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 162 flow. Second operand 6 states and 604 transitions. [2023-01-27 19:46:17,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 106 transitions, 585 flow [2023-01-27 19:46:17,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 106 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:46:17,567 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 224 flow [2023-01-27 19:46:17,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-01-27 19:46:17,568 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-01-27 19:46:17,568 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 224 flow [2023-01-27 19:46:17,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:17,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:17,569 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] [2023-01-27 19:46:17,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:46:17,775 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 [2023-01-27 19:46:17,775 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 2 more)] === [2023-01-27 19:46:17,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1133031309, now seen corresponding path program 1 times [2023-01-27 19:46:17,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:17,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298657140] [2023-01-27 19:46:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:17,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:17,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:17,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298657140] [2023-01-27 19:46:17,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298657140] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:46:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146488236] [2023-01-27 19:46:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:17,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:46:17,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:46:17,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:46:17,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:46:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:18,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:46:18,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:46:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:18,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:46:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146488236] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:46:18,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:46:18,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-27 19:46:18,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950135775] [2023-01-27 19:46:18,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:46:18,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:46:18,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:46:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:46:18,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 19:46:18,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 241 [2023-01-27 19:46:18,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:18,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:46:18,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 241 [2023-01-27 19:46:18,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:46:18,750 INFO L130 PetriNetUnfolder]: 1541/2125 cut-off events. [2023-01-27 19:46:18,751 INFO L131 PetriNetUnfolder]: For 3355/3355 co-relation queries the response was YES. [2023-01-27 19:46:18,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 2125 events. 1541/2125 cut-off events. For 3355/3355 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7652 event pairs, 281 based on Foata normal form. 90/2215 useless extension candidates. Maximal degree in co-relation 3834. Up to 896 conditions per place. [2023-01-27 19:46:18,764 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 103 selfloop transitions, 14 changer transitions 3/120 dead transitions. [2023-01-27 19:46:18,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 120 transitions, 797 flow [2023-01-27 19:46:18,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:46:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:46:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2023-01-27 19:46:18,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149377593360996 [2023-01-27 19:46:18,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2023-01-27 19:46:18,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2023-01-27 19:46:18,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:18,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2023-01-27 19:46:18,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:18,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:18,772 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:18,772 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 224 flow. Second operand 6 states and 600 transitions. [2023-01-27 19:46:18,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 120 transitions, 797 flow [2023-01-27 19:46:18,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 120 transitions, 780 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-27 19:46:18,780 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 284 flow [2023-01-27 19:46:18,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-01-27 19:46:18,781 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-01-27 19:46:18,781 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 284 flow [2023-01-27 19:46:18,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:18,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:18,782 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] [2023-01-27 19:46:18,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:46:18,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:46:18,995 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 2 more)] === [2023-01-27 19:46:18,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:18,996 INFO L85 PathProgramCache]: Analyzing trace with hash 388078737, now seen corresponding path program 2 times [2023-01-27 19:46:18,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:18,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902956641] [2023-01-27 19:46:18,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:18,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902956641] [2023-01-27 19:46:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902956641] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:46:19,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:46:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:46:19,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359700920] [2023-01-27 19:46:19,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:46:19,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:46:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:46:19,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:46:19,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:46:19,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 241 [2023-01-27 19:46:19,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:19,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:46:19,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 241 [2023-01-27 19:46:19,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:46:19,450 INFO L130 PetriNetUnfolder]: 1793/2461 cut-off events. [2023-01-27 19:46:19,450 INFO L131 PetriNetUnfolder]: For 5862/5862 co-relation queries the response was YES. [2023-01-27 19:46:19,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 2461 events. 1793/2461 cut-off events. For 5862/5862 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8984 event pairs, 485 based on Foata normal form. 84/2545 useless extension candidates. Maximal degree in co-relation 5216. Up to 1989 conditions per place. [2023-01-27 19:46:19,470 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 69 selfloop transitions, 10 changer transitions 3/82 dead transitions. [2023-01-27 19:46:19,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 604 flow [2023-01-27 19:46:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:46:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:46:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2023-01-27 19:46:19,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107883817427386 [2023-01-27 19:46:19,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 396 transitions. [2023-01-27 19:46:19,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 396 transitions. [2023-01-27 19:46:19,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:19,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 396 transitions. [2023-01-27 19:46:19,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:19,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:19,476 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:19,476 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 284 flow. Second operand 4 states and 396 transitions. [2023-01-27 19:46:19,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 604 flow [2023-01-27 19:46:19,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 82 transitions, 593 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 19:46:19,489 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 306 flow [2023-01-27 19:46:19,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-01-27 19:46:19,490 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-01-27 19:46:19,490 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 306 flow [2023-01-27 19:46:19,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:19,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:19,491 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] [2023-01-27 19:46:19,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 19:46:19,491 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 2 more)] === [2023-01-27 19:46:19,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:19,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1270844354, now seen corresponding path program 1 times [2023-01-27 19:46:19,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:19,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740710778] [2023-01-27 19:46:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:19,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:19,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:19,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740710778] [2023-01-27 19:46:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740710778] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:46:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902180981] [2023-01-27 19:46:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:19,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:46:19,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:46:19,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:46:19,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:46:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:19,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-27 19:46:19,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:46:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:19,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:46:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:19,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902180981] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:46:19,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 19:46:19,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-27 19:46:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421684531] [2023-01-27 19:46:19,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 19:46:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 19:46:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:46:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 19:46:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 19:46:19,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 241 [2023-01-27 19:46:19,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:19,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:46:19,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 241 [2023-01-27 19:46:19,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:46:20,245 INFO L130 PetriNetUnfolder]: 2267/3107 cut-off events. [2023-01-27 19:46:20,245 INFO L131 PetriNetUnfolder]: For 8403/8403 co-relation queries the response was YES. [2023-01-27 19:46:20,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13015 conditions, 3107 events. 2267/3107 cut-off events. For 8403/8403 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11968 event pairs, 505 based on Foata normal form. 76/3183 useless extension candidates. Maximal degree in co-relation 6992. Up to 1779 conditions per place. [2023-01-27 19:46:20,268 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 114 selfloop transitions, 14 changer transitions 3/131 dead transitions. [2023-01-27 19:46:20,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 131 transitions, 960 flow [2023-01-27 19:46:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:46:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:46:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2023-01-27 19:46:20,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41770401106500693 [2023-01-27 19:46:20,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2023-01-27 19:46:20,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2023-01-27 19:46:20,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:46:20,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2023-01-27 19:46:20,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:20,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:20,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:20,275 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 306 flow. Second operand 6 states and 604 transitions. [2023-01-27 19:46:20,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 131 transitions, 960 flow [2023-01-27 19:46:20,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 924 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-27 19:46:20,295 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 348 flow [2023-01-27 19:46:20,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-01-27 19:46:20,296 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2023-01-27 19:46:20,296 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 348 flow [2023-01-27 19:46:20,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:46:20,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:46:20,297 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] [2023-01-27 19:46:20,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 19:46:20,502 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 [2023-01-27 19:46:20,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 19:46:20,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:46:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1029245609, now seen corresponding path program 1 times [2023-01-27 19:46:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:46:20,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670512825] [2023-01-27 19:46:20,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:46:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:46:20,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:46:20,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:46:20,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670512825] [2023-01-27 19:46:20,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670512825] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 19:46:20,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101345980] [2023-01-27 19:46:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:46:20,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:46:20,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:46:20,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:46:20,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Received shutdown request... [2023-01-27 20:00:52,440 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:00:52,447 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:00:53,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-27 20:00:53,650 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2023-01-27 20:00:53,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2023-01-27 20:00:53,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 20:00:53,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:00:53,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-01-27 20:00:53,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678048983] [2023-01-27 20:00:53,681 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-01-27 20:00:53,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:00:53,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:00:53,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:00:53,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:00:53,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 241 [2023-01-27 20:00:53,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:00:53,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:00:53,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 241 [2023-01-27 20:00:53,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:00:53,688 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 20:00:53,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:00:53,690 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-01-27 20:00:53,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-27 20:00:53,691 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 20:00:53,692 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 20:00:53,692 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-27 20:00:53,692 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-01-27 20:00:53,696 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:00:53,696 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:00:53,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:00:53 BasicIcfg [2023-01-27 20:00:53,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:00:53,701 INFO L158 Benchmark]: Toolchain (without parser) took 882930.29ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 509.8MB in the beginning and 567.2MB in the end (delta: -57.4MB). Peak memory consumption was 59.0MB. Max. memory is 16.0GB. [2023-01-27 20:00:53,701 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 306.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:00:53,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.83ms. Allocated memory is still 557.8MB. Free memory was 509.2MB in the beginning and 498.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-27 20:00:53,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.52ms. Allocated memory is still 557.8MB. Free memory was 498.2MB in the beginning and 496.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:00:53,702 INFO L158 Benchmark]: Boogie Preprocessor took 22.56ms. Allocated memory is still 557.8MB. Free memory was 496.7MB in the beginning and 495.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:00:53,702 INFO L158 Benchmark]: RCFGBuilder took 497.65ms. Allocated memory is still 557.8MB. Free memory was 495.1MB in the beginning and 479.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-01-27 20:00:53,704 INFO L158 Benchmark]: TraceAbstraction took 882192.91ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 478.3MB in the beginning and 567.2MB in the end (delta: -88.8MB). Peak memory consumption was 27.5MB. Max. memory is 16.0GB. [2023-01-27 20:00:53,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 306.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 184.83ms. Allocated memory is still 557.8MB. Free memory was 509.2MB in the beginning and 498.2MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.52ms. Allocated memory is still 557.8MB. Free memory was 498.2MB in the beginning and 496.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.56ms. Allocated memory is still 557.8MB. Free memory was 496.7MB in the beginning and 495.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 497.65ms. Allocated memory is still 557.8MB. Free memory was 495.1MB in the beginning and 479.4MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 882192.91ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 478.3MB in the beginning and 567.2MB in the end (delta: -88.8MB). Peak memory consumption was 27.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 122 PlacesBefore, 34 PlacesAfterwards, 119 TransitionsBefore, 25 TransitionsAfterwards, 2160 CoEnabledTransitionPairs, 6 FixpointIterations, 49 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 106 TotalNumberOfCompositions, 2086 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2086, independent: 2086, independent conditional: 0, independent unconditional: 2086, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1162, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2086, independent: 924, independent conditional: 0, independent unconditional: 924, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1162, unknown conditional: 0, unknown unconditional: 1162] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 162 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 882.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 953 IncrementalHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 953 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=348occurred in iteration=7, InterpolantAutomatonStates: 33, 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, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 6878 SizeOfPredicates, 17 NumberOfNonLiveVariables, 600 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 3/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown