/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 12:05:31,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 12:05:31,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 12:05:31,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 12:05:31,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 12:05:31,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 12:05:31,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 12:05:31,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 12:05:31,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 12:05:31,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 12:05:31,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 12:05:31,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 12:05:31,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 12:05:31,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 12:05:31,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 12:05:31,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 12:05:31,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 12:05:31,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 12:05:31,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 12:05:31,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 12:05:31,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 12:05:31,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 12:05:31,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 12:05:31,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 12:05:31,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 12:05:31,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 12:05:31,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 12:05:31,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 12:05:31,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 12:05:31,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 12:05:31,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 12:05:31,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 12:05:31,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 12:05:31,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 12:05:31,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 12:05:31,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 12:05:31,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 12:05:31,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 12:05:31,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 12:05:31,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 12:05:31,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 12:05:31,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 12:05:31,244 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 12:05:31,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 12:05:31,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 12:05:31,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 12:05:31,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 12:05:31,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 12:05:31,247 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 12:05:31,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 12:05:31,247 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 12:05:31,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 12:05:31,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 12:05:31,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 12:05:31,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:05:31,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 12:05:31,249 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 12:05:31,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 12:05:31,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 12:05:31,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 12:05:31,481 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 12:05:31,481 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 12:05:31,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-01-28 12:05:32,546 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 12:05:32,691 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 12:05:32,692 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2023-01-28 12:05:32,696 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d8770037/489bbdb5217747fe8a31d767a6373a01/FLAGa1992c2fd [2023-01-28 12:05:32,706 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d8770037/489bbdb5217747fe8a31d767a6373a01 [2023-01-28 12:05:32,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 12:05:32,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 12:05:32,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 12:05:32,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 12:05:32,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 12:05:32,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d16d57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32, skipping insertion in model container [2023-01-28 12:05:32,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 12:05:32,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 12:05:32,855 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/unroll-5.wvr.c[2644,2657] [2023-01-28 12:05:32,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:05:32,870 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 12:05:32,885 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/unroll-5.wvr.c[2644,2657] [2023-01-28 12:05:32,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 12:05:32,898 INFO L208 MainTranslator]: Completed translation [2023-01-28 12:05:32,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32 WrapperNode [2023-01-28 12:05:32,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 12:05:32,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 12:05:32,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 12:05:32,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 12:05:32,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,927 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 167 [2023-01-28 12:05:32,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 12:05:32,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 12:05:32,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 12:05:32,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 12:05:32,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 12:05:32,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 12:05:32,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 12:05:32,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 12:05:32,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (1/1) ... [2023-01-28 12:05:32,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 12:05:32,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:32,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 12:05:32,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 12:05:33,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 12:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 12:05:33,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 12:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 12:05:33,034 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 12:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 12:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 12:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 12:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 12:05:33,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 12:05:33,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 12:05:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 12:05:33,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 12:05:33,036 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 12:05:33,129 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 12:05:33,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 12:05:33,358 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 12:05:33,365 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 12:05:33,365 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-28 12:05:33,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:05:33 BoogieIcfgContainer [2023-01-28 12:05:33,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 12:05:33,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 12:05:33,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 12:05:33,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 12:05:33,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:05:32" (1/3) ... [2023-01-28 12:05:33,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e74a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:05:33, skipping insertion in model container [2023-01-28 12:05:33,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:05:32" (2/3) ... [2023-01-28 12:05:33,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e74a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:05:33, skipping insertion in model container [2023-01-28 12:05:33,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:05:33" (3/3) ... [2023-01-28 12:05:33,372 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2023-01-28 12:05:33,397 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 12:05:33,397 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 12:05:33,397 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 12:05:33,544 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 12:05:33,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 196 transitions, 408 flow [2023-01-28 12:05:33,675 INFO L130 PetriNetUnfolder]: 17/194 cut-off events. [2023-01-28 12:05:33,676 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:05:33,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 194 events. 17/194 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 165 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-01-28 12:05:33,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 196 transitions, 408 flow [2023-01-28 12:05:33,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 186 transitions, 384 flow [2023-01-28 12:05:33,695 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 12:05:33,709 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 186 transitions, 384 flow [2023-01-28 12:05:33,711 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 186 transitions, 384 flow [2023-01-28 12:05:33,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 186 transitions, 384 flow [2023-01-28 12:05:33,756 INFO L130 PetriNetUnfolder]: 17/186 cut-off events. [2023-01-28 12:05:33,756 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:05:33,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 186 events. 17/186 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 147 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-01-28 12:05:33,759 INFO L119 LiptonReduction]: Number of co-enabled transitions 3892 [2023-01-28 12:05:38,386 INFO L134 LiptonReduction]: Checked pairs total: 3908 [2023-01-28 12:05:38,387 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-01-28 12:05:38,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 12:05:38,401 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;@74bdcebf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 12:05:38,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 12:05:38,404 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-28 12:05:38,405 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:05:38,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:38,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:38,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:38,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1925462898, now seen corresponding path program 1 times [2023-01-28 12:05:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007251386] [2023-01-28 12:05:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:38,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:38,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007251386] [2023-01-28 12:05:38,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007251386] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:38,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:38,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 12:05:38,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749071395] [2023-01-28 12:05:38,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:38,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:05:38,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:05:38,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:05:38,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 426 [2023-01-28 12:05:38,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:38,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:38,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 426 [2023-01-28 12:05:38,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:38,727 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-28 12:05:38,727 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 12:05:38,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 186 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-28 12:05:38,730 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-28 12:05:38,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-28 12:05:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:05:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:05:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2023-01-28 12:05:38,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4029733959311424 [2023-01-28 12:05:38,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2023-01-28 12:05:38,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2023-01-28 12:05:38,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:38,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2023-01-28 12:05:38,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:38,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:38,760 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:38,761 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 515 transitions. [2023-01-28 12:05:38,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-28 12:05:38,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 12:05:38,766 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-28 12:05:38,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-28 12:05:38,771 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-28 12:05:38,771 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-28 12:05:38,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:38,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:38,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:38,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 12:05:38,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:38,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:38,773 INFO L85 PathProgramCache]: Analyzing trace with hash 406205141, now seen corresponding path program 1 times [2023-01-28 12:05:38,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:38,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41237457] [2023-01-28 12:05:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:38,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41237457] [2023-01-28 12:05:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41237457] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:39,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:39,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 12:05:39,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571765013] [2023-01-28 12:05:39,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:39,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 12:05:39,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 12:05:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 12:05:39,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 12:05:39,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:39,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 12:05:39,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:39,063 INFO L130 PetriNetUnfolder]: 66/117 cut-off events. [2023-01-28 12:05:39,063 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 12:05:39,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 117 events. 66/117 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 310 event pairs, 9 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 234. Up to 85 conditions per place. [2023-01-28 12:05:39,064 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2023-01-28 12:05:39,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 125 flow [2023-01-28 12:05:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 12:05:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 12:05:39,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-01-28 12:05:39,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3865414710485133 [2023-01-28 12:05:39,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-01-28 12:05:39,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-01-28 12:05:39,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:39,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-01-28 12:05:39,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,069 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 3 states and 494 transitions. [2023-01-28 12:05:39,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 125 flow [2023-01-28 12:05:39,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 121 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:05:39,070 INFO L231 Difference]: Finished difference. Result has 22 places, 20 transitions, 65 flow [2023-01-28 12:05:39,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=22, PETRI_TRANSITIONS=20} [2023-01-28 12:05:39,071 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-01-28 12:05:39,071 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 65 flow [2023-01-28 12:05:39,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:39,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:39,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 12:05:39,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:39,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -91515540, now seen corresponding path program 1 times [2023-01-28 12:05:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:39,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498735551] [2023-01-28 12:05:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:39,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498735551] [2023-01-28 12:05:39,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498735551] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:39,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:39,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:05:39,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791858982] [2023-01-28 12:05:39,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:39,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:05:39,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:05:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:05:39,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 12:05:39,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:39,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 12:05:39,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:39,348 INFO L130 PetriNetUnfolder]: 85/170 cut-off events. [2023-01-28 12:05:39,348 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-01-28 12:05:39,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 170 events. 85/170 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 576 event pairs, 26 based on Foata normal form. 12/181 useless extension candidates. Maximal degree in co-relation 386. Up to 87 conditions per place. [2023-01-28 12:05:39,349 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 31 selfloop transitions, 4 changer transitions 8/43 dead transitions. [2023-01-28 12:05:39,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 43 transitions, 212 flow [2023-01-28 12:05:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:05:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:05:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 821 transitions. [2023-01-28 12:05:39,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854460093896714 [2023-01-28 12:05:39,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 821 transitions. [2023-01-28 12:05:39,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 821 transitions. [2023-01-28 12:05:39,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:39,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 821 transitions. [2023-01-28 12:05:39,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.2) internal successors, (821), 5 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,357 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 65 flow. Second operand 5 states and 821 transitions. [2023-01-28 12:05:39,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 43 transitions, 212 flow [2023-01-28 12:05:39,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 43 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:05:39,359 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 93 flow [2023-01-28 12:05:39,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 12:05:39,360 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 7 predicate places. [2023-01-28 12:05:39,363 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 93 flow [2023-01-28 12:05:39,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:39,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:39,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 12:05:39,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:39,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:39,364 INFO L85 PathProgramCache]: Analyzing trace with hash 531655878, now seen corresponding path program 2 times [2023-01-28 12:05:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:39,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007468533] [2023-01-28 12:05:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:39,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:39,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:39,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007468533] [2023-01-28 12:05:39,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007468533] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:39,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:39,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 12:05:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586051271] [2023-01-28 12:05:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:39,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:05:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:05:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 12:05:39,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 426 [2023-01-28 12:05:39,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:39,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 426 [2023-01-28 12:05:39,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:39,527 INFO L130 PetriNetUnfolder]: 85/163 cut-off events. [2023-01-28 12:05:39,527 INFO L131 PetriNetUnfolder]: For 123/135 co-relation queries the response was YES. [2023-01-28 12:05:39,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 163 events. 85/163 cut-off events. For 123/135 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 524 event pairs, 24 based on Foata normal form. 7/164 useless extension candidates. Maximal degree in co-relation 474. Up to 104 conditions per place. [2023-01-28 12:05:39,528 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 26 selfloop transitions, 4 changer transitions 4/35 dead transitions. [2023-01-28 12:05:39,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 206 flow [2023-01-28 12:05:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:05:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:05:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 700 transitions. [2023-01-28 12:05:39,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107981220657277 [2023-01-28 12:05:39,530 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 700 transitions. [2023-01-28 12:05:39,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 700 transitions. [2023-01-28 12:05:39,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:39,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 700 transitions. [2023-01-28 12:05:39,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,534 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,534 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 93 flow. Second operand 4 states and 700 transitions. [2023-01-28 12:05:39,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 206 flow [2023-01-28 12:05:39,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 193 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 12:05:39,536 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 112 flow [2023-01-28 12:05:39,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-01-28 12:05:39,536 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2023-01-28 12:05:39,537 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 112 flow [2023-01-28 12:05:39,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.75) internal successors, (683), 4 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:39,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:39,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 12:05:39,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:39,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 51165837, now seen corresponding path program 1 times [2023-01-28 12:05:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:39,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800287983] [2023-01-28 12:05:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:39,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:39,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:39,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800287983] [2023-01-28 12:05:39,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800287983] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:39,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:39,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 12:05:39,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865551039] [2023-01-28 12:05:39,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:39,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:05:39,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:39,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:05:39,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 12:05:39,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-28 12:05:39,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:39,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-28 12:05:39,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:39,653 INFO L130 PetriNetUnfolder]: 82/167 cut-off events. [2023-01-28 12:05:39,653 INFO L131 PetriNetUnfolder]: For 226/246 co-relation queries the response was YES. [2023-01-28 12:05:39,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 167 events. 82/167 cut-off events. For 226/246 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 565 event pairs, 31 based on Foata normal form. 18/180 useless extension candidates. Maximal degree in co-relation 491. Up to 114 conditions per place. [2023-01-28 12:05:39,654 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 32 selfloop transitions, 4 changer transitions 2/40 dead transitions. [2023-01-28 12:05:39,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 254 flow [2023-01-28 12:05:39,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:05:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:05:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 666 transitions. [2023-01-28 12:05:39,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908450704225352 [2023-01-28 12:05:39,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 666 transitions. [2023-01-28 12:05:39,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 666 transitions. [2023-01-28 12:05:39,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:39,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 666 transitions. [2023-01-28 12:05:39,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,661 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 112 flow. Second operand 4 states and 666 transitions. [2023-01-28 12:05:39,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 254 flow [2023-01-28 12:05:39,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 12:05:39,663 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 139 flow [2023-01-28 12:05:39,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-28 12:05:39,664 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2023-01-28 12:05:39,664 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 139 flow [2023-01-28 12:05:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:39,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:39,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 12:05:39,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:39,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 151453329, now seen corresponding path program 2 times [2023-01-28 12:05:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:39,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414342528] [2023-01-28 12:05:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:39,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:39,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414342528] [2023-01-28 12:05:39,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414342528] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:39,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710261411] [2023-01-28 12:05:39,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:05:39,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:39,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:39,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:05:39,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 12:05:39,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:05:39,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:39,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 12:05:39,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:39,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:05:39,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710261411] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:39,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 12:05:39,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-01-28 12:05:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621843913] [2023-01-28 12:05:39,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:39,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:05:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:39,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:05:39,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:05:39,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-28 12:05:39,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:39,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:39,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-28 12:05:39,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:40,022 INFO L130 PetriNetUnfolder]: 90/181 cut-off events. [2023-01-28 12:05:40,023 INFO L131 PetriNetUnfolder]: For 303/321 co-relation queries the response was YES. [2023-01-28 12:05:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 181 events. 90/181 cut-off events. For 303/321 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 602 event pairs, 27 based on Foata normal form. 20/196 useless extension candidates. Maximal degree in co-relation 643. Up to 126 conditions per place. [2023-01-28 12:05:40,024 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 30 selfloop transitions, 4 changer transitions 5/41 dead transitions. [2023-01-28 12:05:40,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 281 flow [2023-01-28 12:05:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:05:40,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:05:40,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 670 transitions. [2023-01-28 12:05:40,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931924882629108 [2023-01-28 12:05:40,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 670 transitions. [2023-01-28 12:05:40,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 670 transitions. [2023-01-28 12:05:40,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:40,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 670 transitions. [2023-01-28 12:05:40,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 167.5) internal successors, (670), 4 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,029 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 139 flow. Second operand 4 states and 670 transitions. [2023-01-28 12:05:40,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 281 flow [2023-01-28 12:05:40,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 270 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 12:05:40,031 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 164 flow [2023-01-28 12:05:40,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-01-28 12:05:40,031 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-01-28 12:05:40,031 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 164 flow [2023-01-28 12:05:40,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:40,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:40,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 12:05:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 12:05:40,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:40,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1653193011, now seen corresponding path program 3 times [2023-01-28 12:05:40,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:40,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702889334] [2023-01-28 12:05:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:40,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:40,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702889334] [2023-01-28 12:05:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702889334] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:40,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713155016] [2023-01-28 12:05:40,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:05:40,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:40,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:05:40,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 12:05:40,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 12:05:40,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:40,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-28 12:05:40,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:40,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 12:05:40,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713155016] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:40,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 12:05:40,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-01-28 12:05:40,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907689991] [2023-01-28 12:05:40,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:40,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 12:05:40,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:40,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 12:05:40,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 12:05:40,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-01-28 12:05:40,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:40,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-01-28 12:05:40,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:40,546 INFO L130 PetriNetUnfolder]: 92/180 cut-off events. [2023-01-28 12:05:40,546 INFO L131 PetriNetUnfolder]: For 506/524 co-relation queries the response was YES. [2023-01-28 12:05:40,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 180 events. 92/180 cut-off events. For 506/524 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 604 event pairs, 35 based on Foata normal form. 20/194 useless extension candidates. Maximal degree in co-relation 672. Up to 126 conditions per place. [2023-01-28 12:05:40,548 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 29 selfloop transitions, 8 changer transitions 3/42 dead transitions. [2023-01-28 12:05:40,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 314 flow [2023-01-28 12:05:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 12:05:40,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 12:05:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 667 transitions. [2023-01-28 12:05:40,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3914319248826291 [2023-01-28 12:05:40,550 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 667 transitions. [2023-01-28 12:05:40,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 667 transitions. [2023-01-28 12:05:40,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:40,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 667 transitions. [2023-01-28 12:05:40,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,553 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,553 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 164 flow. Second operand 4 states and 667 transitions. [2023-01-28 12:05:40,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 314 flow [2023-01-28 12:05:40,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 301 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 12:05:40,558 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 200 flow [2023-01-28 12:05:40,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-01-28 12:05:40,559 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 20 predicate places. [2023-01-28 12:05:40,559 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 200 flow [2023-01-28 12:05:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:40,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:40,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 12:05:40,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-01-28 12:05:40,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:40,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:40,766 INFO L85 PathProgramCache]: Analyzing trace with hash 414711862, now seen corresponding path program 3 times [2023-01-28 12:05:40,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:40,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157845405] [2023-01-28 12:05:40,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:40,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:40,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157845405] [2023-01-28 12:05:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157845405] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:40,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:05:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333493521] [2023-01-28 12:05:40,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:40,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:05:40,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:05:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:05:40,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 12:05:40,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:40,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 12:05:40,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:40,947 INFO L130 PetriNetUnfolder]: 108/207 cut-off events. [2023-01-28 12:05:40,948 INFO L131 PetriNetUnfolder]: For 562/562 co-relation queries the response was YES. [2023-01-28 12:05:40,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 207 events. 108/207 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 670 event pairs, 38 based on Foata normal form. 4/210 useless extension candidates. Maximal degree in co-relation 824. Up to 147 conditions per place. [2023-01-28 12:05:40,949 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 33 selfloop transitions, 10 changer transitions 4/47 dead transitions. [2023-01-28 12:05:40,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 388 flow [2023-01-28 12:05:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:05:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:05:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 815 transitions. [2023-01-28 12:05:40,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826291079812207 [2023-01-28 12:05:40,951 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 815 transitions. [2023-01-28 12:05:40,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 815 transitions. [2023-01-28 12:05:40,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:40,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 815 transitions. [2023-01-28 12:05:40,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,955 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,955 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 200 flow. Second operand 5 states and 815 transitions. [2023-01-28 12:05:40,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 388 flow [2023-01-28 12:05:40,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 364 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 12:05:40,958 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 255 flow [2023-01-28 12:05:40,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-01-28 12:05:40,960 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 23 predicate places. [2023-01-28 12:05:40,960 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 255 flow [2023-01-28 12:05:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:40,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:40,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:40,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 12:05:40,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:40,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1611530206, now seen corresponding path program 4 times [2023-01-28 12:05:40,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:40,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578509677] [2023-01-28 12:05:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:40,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 12:05:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578509677] [2023-01-28 12:05:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578509677] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 12:05:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 12:05:41,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 12:05:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008823278] [2023-01-28 12:05:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 12:05:41,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 12:05:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 12:05:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 12:05:41,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 12:05:41,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:41,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:41,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 12:05:41,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:41,099 INFO L130 PetriNetUnfolder]: 108/201 cut-off events. [2023-01-28 12:05:41,099 INFO L131 PetriNetUnfolder]: For 630/630 co-relation queries the response was YES. [2023-01-28 12:05:41,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 201 events. 108/201 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 643 event pairs, 31 based on Foata normal form. 4/204 useless extension candidates. Maximal degree in co-relation 858. Up to 138 conditions per place. [2023-01-28 12:05:41,101 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 31 selfloop transitions, 14 changer transitions 6/51 dead transitions. [2023-01-28 12:05:41,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 446 flow [2023-01-28 12:05:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 12:05:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 12:05:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2023-01-28 12:05:41,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38403755868544603 [2023-01-28 12:05:41,103 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2023-01-28 12:05:41,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2023-01-28 12:05:41,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:41,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2023-01-28 12:05:41,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:41,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:41,106 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:41,107 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 255 flow. Second operand 5 states and 818 transitions. [2023-01-28 12:05:41,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 446 flow [2023-01-28 12:05:41,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 435 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 12:05:41,108 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 322 flow [2023-01-28 12:05:41,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-01-28 12:05:41,109 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 28 predicate places. [2023-01-28 12:05:41,109 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 322 flow [2023-01-28 12:05:41,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:41,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:41,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 12:05:41,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:41,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash -541961488, now seen corresponding path program 1 times [2023-01-28 12:05:41,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:41,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10112832] [2023-01-28 12:05:41,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:41,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 12:05:41,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10112832] [2023-01-28 12:05:41,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10112832] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:41,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521031191] [2023-01-28 12:05:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:41,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:41,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:41,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:05:41,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 12:05:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:41,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 41 conjunts are in the unsatisfiable core [2023-01-28 12:05:41,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:41,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:05:41,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:05:41,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 12:05:41,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 12:05:41,711 INFO L321 Elim1Store]: treesize reduction 29, result has 64.2 percent of original size [2023-01-28 12:05:41,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 84 [2023-01-28 12:05:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:41,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:41,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:41,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 371 treesize of output 215 [2023-01-28 12:05:42,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:42,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 700 treesize of output 708 [2023-01-28 12:05:42,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:42,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 370 treesize of output 342 [2023-01-28 12:05:42,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:05:42,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 245 [2023-01-28 12:05:49,985 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 12:05:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:05:50,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521031191] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:05:50,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:05:50,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2023-01-28 12:05:50,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918635667] [2023-01-28 12:05:50,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:05:50,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 12:05:50,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:50,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 12:05:50,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=188, Unknown=8, NotChecked=0, Total=240 [2023-01-28 12:05:50,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 426 [2023-01-28 12:05:50,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 322 flow. Second operand has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:50,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:50,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 426 [2023-01-28 12:05:50,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:51,473 INFO L130 PetriNetUnfolder]: 243/430 cut-off events. [2023-01-28 12:05:51,473 INFO L131 PetriNetUnfolder]: For 1418/1444 co-relation queries the response was YES. [2023-01-28 12:05:51,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 430 events. 243/430 cut-off events. For 1418/1444 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1657 event pairs, 16 based on Foata normal form. 36/460 useless extension candidates. Maximal degree in co-relation 1656. Up to 209 conditions per place. [2023-01-28 12:05:51,475 INFO L137 encePairwiseOnDemand]: 418/426 looper letters, 35 selfloop transitions, 20 changer transitions 64/122 dead transitions. [2023-01-28 12:05:51,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 1087 flow [2023-01-28 12:05:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 12:05:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 12:05:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2380 transitions. [2023-01-28 12:05:51,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2793427230046948 [2023-01-28 12:05:51,481 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2380 transitions. [2023-01-28 12:05:51,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2380 transitions. [2023-01-28 12:05:51,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:05:51,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2380 transitions. [2023-01-28 12:05:51,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 119.0) internal successors, (2380), 20 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:51,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 426.0) internal successors, (8946), 21 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:51,494 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 426.0) internal successors, (8946), 21 states have internal predecessors, (8946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:51,494 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 322 flow. Second operand 20 states and 2380 transitions. [2023-01-28 12:05:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 1087 flow [2023-01-28 12:05:51,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 122 transitions, 999 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-01-28 12:05:51,499 INFO L231 Difference]: Finished difference. Result has 70 places, 40 transitions, 383 flow [2023-01-28 12:05:51,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=383, PETRI_PLACES=70, PETRI_TRANSITIONS=40} [2023-01-28 12:05:51,500 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 49 predicate places. [2023-01-28 12:05:51,500 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 40 transitions, 383 flow [2023-01-28 12:05:51,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 116.6875) internal successors, (1867), 16 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:51,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:05:51,500 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:05:51,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 12:05:51,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:51,721 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:05:51,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:05:51,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1708393027, now seen corresponding path program 2 times [2023-01-28 12:05:51,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:05:51,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904486444] [2023-01-28 12:05:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:05:51,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:05:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:05:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:05:52,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:05:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904486444] [2023-01-28 12:05:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904486444] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:05:52,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139672417] [2023-01-28 12:05:52,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 12:05:52,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:05:52,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:05:52,944 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) [2023-01-28 12:05:52,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 12:05:53,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 12:05:53,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:05:53,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 12:05:53,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:05:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:05:53,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:05:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 12:05:53,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139672417] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 12:05:53,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 12:05:53,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 15 [2023-01-28 12:05:53,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601693121] [2023-01-28 12:05:53,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 12:05:53,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 12:05:53,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 12:05:53,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 12:05:53,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-28 12:05:53,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 426 [2023-01-28 12:05:53,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 40 transitions, 383 flow. Second operand has 15 states, 15 states have (on average 158.33333333333334) internal successors, (2375), 15 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:05:53,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 12:05:53,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 426 [2023-01-28 12:05:53,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 12:05:58,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 12:06:07,250 INFO L130 PetriNetUnfolder]: 230/398 cut-off events. [2023-01-28 12:06:07,250 INFO L131 PetriNetUnfolder]: For 2010/2010 co-relation queries the response was YES. [2023-01-28 12:06:07,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 398 events. 230/398 cut-off events. For 2010/2010 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1390 event pairs, 11 based on Foata normal form. 62/460 useless extension candidates. Maximal degree in co-relation 2182. Up to 213 conditions per place. [2023-01-28 12:06:07,253 INFO L137 encePairwiseOnDemand]: 420/426 looper letters, 89 selfloop transitions, 52 changer transitions 0/141 dead transitions. [2023-01-28 12:06:07,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 141 transitions, 1397 flow [2023-01-28 12:06:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 12:06:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 12:06:07,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3869 transitions. [2023-01-28 12:06:07,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37842331768388104 [2023-01-28 12:06:07,274 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3869 transitions. [2023-01-28 12:06:07,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3869 transitions. [2023-01-28 12:06:07,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 12:06:07,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3869 transitions. [2023-01-28 12:06:07,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 161.20833333333334) internal successors, (3869), 24 states have internal predecessors, (3869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:06:07,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 426.0) internal successors, (10650), 25 states have internal predecessors, (10650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:06:07,343 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 426.0) internal successors, (10650), 25 states have internal predecessors, (10650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:06:07,344 INFO L175 Difference]: Start difference. First operand has 70 places, 40 transitions, 383 flow. Second operand 24 states and 3869 transitions. [2023-01-28 12:06:07,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 141 transitions, 1397 flow [2023-01-28 12:06:07,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 141 transitions, 1266 flow, removed 47 selfloop flow, removed 11 redundant places. [2023-01-28 12:06:07,365 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 889 flow [2023-01-28 12:06:07,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=889, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2023-01-28 12:06:07,366 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 57 predicate places. [2023-01-28 12:06:07,366 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 889 flow [2023-01-28 12:06:07,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 158.33333333333334) internal successors, (2375), 15 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 12:06:07,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 12:06:07,367 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 12:06:07,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 12:06:07,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:06:07,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 12:06:07,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 12:06:07,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1666646071, now seen corresponding path program 3 times [2023-01-28 12:06:07,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 12:06:07,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338020164] [2023-01-28 12:06:07,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 12:06:07,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 12:06:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 12:06:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:06:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 12:06:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338020164] [2023-01-28 12:06:10,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338020164] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 12:06:10,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864855954] [2023-01-28 12:06:10,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 12:06:10,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 12:06:10,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 12:06:10,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 12:06:10,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 12:06:10,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-01-28 12:06:10,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 12:06:10,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 66 conjunts are in the unsatisfiable core [2023-01-28 12:06:10,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 12:06:10,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:06:10,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 12:06:10,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:06:10,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 12:06:11,213 INFO L321 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2023-01-28 12:06:11,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 153 treesize of output 62 [2023-01-28 12:06:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 12:06:11,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 12:06:12,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 12:06:12,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1536 treesize of output 681 [2023-01-28 12:06:13,522 INFO L321 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2023-01-28 12:06:13,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1678 treesize of output 1809 [2023-01-28 12:06:14,869 INFO L321 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-01-28 12:06:14,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1326 treesize of output 1278 [2023-01-28 12:06:16,566 INFO L321 Elim1Store]: treesize reduction 8, result has 98.1 percent of original size [2023-01-28 12:06:16,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 525 treesize of output 741 [2023-01-28 12:06:39,355 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:06:40,228 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 12:07:00,481 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 12:07:12,393 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2023-01-28 12:07:18,077 WARN L222 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 625 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-01-28 12:07:48,373 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 12:07:53,135 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 12:08:06,724 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 12:08:20,126 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 12:08:25,521 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:08:27,774 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:08:33,051 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 12:09:28,524 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:09:30,199 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:09:31,962 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 12:09:49,860 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:09:57,720 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:09:59,042 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:10:13,835 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:10:29,006 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:11:10,886 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 12:11:23,227 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 12:11:28,194 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 12:11:40,482 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 12:11:52,930 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 12:11:57,761 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:11:59,669 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 12:12:28,450 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-01-28 12:12:30,718 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-28 12:19:56,637 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 12:19:56,637 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 [2023-01-28 12:19:56,698 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 12:19:56,700 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 12:19:56,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 12:19:56,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 12:19:56,905 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 131ms.. [2023-01-28 12:19:56,906 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 12:19:56,906 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 12:19:56,906 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1] [2023-01-28 12:19:56,909 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 12:19:56,909 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 12:19:56,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:19:56 BasicIcfg [2023-01-28 12:19:56,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 12:19:56,926 INFO L158 Benchmark]: Toolchain (without parser) took 864217.85ms. Allocated memory was 354.4MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 303.0MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-01-28 12:19:56,926 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 12:19:56,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.33ms. Allocated memory is still 354.4MB. Free memory was 302.7MB in the beginning and 291.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 12:19:56,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.51ms. Allocated memory is still 354.4MB. Free memory was 291.3MB in the beginning and 289.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:19:56,927 INFO L158 Benchmark]: Boogie Preprocessor took 20.14ms. Allocated memory is still 354.4MB. Free memory was 289.1MB in the beginning and 287.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 12:19:56,927 INFO L158 Benchmark]: RCFGBuilder took 418.05ms. Allocated memory is still 354.4MB. Free memory was 287.5MB in the beginning and 318.7MB in the end (delta: -31.2MB). Peak memory consumption was 13.3MB. Max. memory is 16.0GB. [2023-01-28 12:19:56,927 INFO L158 Benchmark]: TraceAbstraction took 863557.55ms. Allocated memory was 354.4MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 318.1MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-01-28 12:19:56,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 189.33ms. Allocated memory is still 354.4MB. Free memory was 302.7MB in the beginning and 291.3MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.51ms. Allocated memory is still 354.4MB. Free memory was 291.3MB in the beginning and 289.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.14ms. Allocated memory is still 354.4MB. Free memory was 289.1MB in the beginning and 287.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 418.05ms. Allocated memory is still 354.4MB. Free memory was 287.5MB in the beginning and 318.7MB in the end (delta: -31.2MB). Peak memory consumption was 13.3MB. Max. memory is 16.0GB. * TraceAbstraction took 863557.55ms. Allocated memory was 354.4MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 318.1MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 176 PlacesBefore, 21 PlacesAfterwards, 186 TransitionsBefore, 17 TransitionsAfterwards, 3892 CoEnabledTransitionPairs, 8 FixpointIterations, 74 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 35 ConcurrentYvCompositions, 14 ChoiceCompositions, 230 TotalNumberOfCompositions, 3908 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3865, independent: 3854, independent conditional: 0, independent unconditional: 3854, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2368, independent: 2362, independent conditional: 0, independent unconditional: 2362, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3865, independent: 1492, independent conditional: 0, independent unconditional: 1492, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 2368, unknown conditional: 0, unknown unconditional: 2368] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 131ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 131ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 131ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 264 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 863.3s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 408 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 408 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1201 IncrementalHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 23 mSDtfsCounter, 1201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=889occurred in iteration=11, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 264 ConstructedInterpolants, 5 QuantifiedInterpolants, 3968 SizeOfPredicates, 26 NumberOfNonLiveVariables, 727 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 30/49 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