/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/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:52:41,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:52:41,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:52:41,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:52:41,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:52:41,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:52:41,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:52:41,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:52:41,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:52:41,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:52:41,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:52:41,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:52:41,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:52:41,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:52:41,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:52:41,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:52:41,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:52:41,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:52:41,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:52:41,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:52:41,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:52:41,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:52:41,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:52:41,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:52:41,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:52:41,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:52:41,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:52:41,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:52:41,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:52:41,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:52:41,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:52:41,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:52:41,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:52:41,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:52:41,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:52:41,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:52:41,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:52:41,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:52:41,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:52:41,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:52:41,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:52:41,294 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 10:52:41,320 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:52:41,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:52:41,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:52:41,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:52:41,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:52:41,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:52:41,322 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:52:41,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:52:41,322 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:52:41,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:52:41,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:52:41,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:52:41,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:52:41,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:52:41,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:52:41,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:52:41,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:52:41,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:52:41,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:52:41,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:52:41,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:52:41,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:52:41,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:52:41,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:52:41,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:52:41,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:52:41,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:52:41,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:52:41,523 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:52:41,524 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:52:41,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-01-28 10:52:42,580 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:52:42,735 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:52:42,736 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2023-01-28 10:52:42,741 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6a0870f/1ae55e2ed0b54955a9b279ee7c4afd5e/FLAGa88b9d1d4 [2023-01-28 10:52:42,752 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6a0870f/1ae55e2ed0b54955a9b279ee7c4afd5e [2023-01-28 10:52:42,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:52:42,755 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:52:42,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:52:42,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:52:42,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:52:42,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:52:42" (1/1) ... [2023-01-28 10:52:42,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1810c342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:42, skipping insertion in model container [2023-01-28 10:52:42,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:52:42" (1/1) ... [2023-01-28 10:52:42,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:52:42,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:52:42,945 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/popl20-more-buffer-series.wvr.c[4351,4364] [2023-01-28 10:52:42,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:52:42,961 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:52:42,986 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/popl20-more-buffer-series.wvr.c[4351,4364] [2023-01-28 10:52:42,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:52:42,996 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:52:42,996 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:52:43,001 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:52:43,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43 WrapperNode [2023-01-28 10:52:43,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:52:43,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:52:43,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:52:43,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:52:43,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,045 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 358 [2023-01-28 10:52:43,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:52:43,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:52:43,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:52:43,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:52:43,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,090 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:52:43,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:52:43,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:52:43,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:52:43,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (1/1) ... [2023-01-28 10:52:43,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:52:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:52:43,135 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 10:52:43,143 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 10:52:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:52:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:52:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:52:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:52:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:52:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:52:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:52:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:52:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:52:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:52:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 10:52:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 10:52:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:52:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:52:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:52:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:52:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:52:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:52:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:52:43,177 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 10:52:43,302 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:52:43,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:52:43,719 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:52:43,885 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:52:43,886 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-01-28 10:52:43,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:52:43 BoogieIcfgContainer [2023-01-28 10:52:43,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:52:43,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:52:43,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:52:43,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:52:43,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:52:42" (1/3) ... [2023-01-28 10:52:43,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35054ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:52:43, skipping insertion in model container [2023-01-28 10:52:43,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:52:43" (2/3) ... [2023-01-28 10:52:43,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35054ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:52:43, skipping insertion in model container [2023-01-28 10:52:43,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:52:43" (3/3) ... [2023-01-28 10:52:43,894 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2023-01-28 10:52:43,908 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:52:43,909 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:52:43,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:52:43,972 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 10:52:44,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 253 transitions, 538 flow [2023-01-28 10:52:44,079 INFO L130 PetriNetUnfolder]: 22/249 cut-off events. [2023-01-28 10:52:44,079 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:52:44,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 249 events. 22/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 140 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-01-28 10:52:44,089 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 253 transitions, 538 flow [2023-01-28 10:52:44,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 237 transitions, 498 flow [2023-01-28 10:52:44,100 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:52:44,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 237 transitions, 498 flow [2023-01-28 10:52:44,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 237 transitions, 498 flow [2023-01-28 10:52:44,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 237 transitions, 498 flow [2023-01-28 10:52:44,188 INFO L130 PetriNetUnfolder]: 22/237 cut-off events. [2023-01-28 10:52:44,188 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:52:44,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 237 events. 22/237 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 139 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-01-28 10:52:44,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 2000 [2023-01-28 10:52:52,458 INFO L134 LiptonReduction]: Checked pairs total: 4059 [2023-01-28 10:52:52,458 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-01-28 10:52:52,470 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:52:52,475 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;@4870e63f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:52:52,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 10:52:52,484 INFO L130 PetriNetUnfolder]: 7/38 cut-off events. [2023-01-28 10:52:52,484 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 10:52:52,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:52:52,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:52:52,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:52:52,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:52:52,489 INFO L85 PathProgramCache]: Analyzing trace with hash -823670804, now seen corresponding path program 1 times [2023-01-28 10:52:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:52:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351268118] [2023-01-28 10:52:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:52:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:52:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:52:53,097 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 10:52:53,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:52:53,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351268118] [2023-01-28 10:52:53,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351268118] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:52:53,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:52:53,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 10:52:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368187583] [2023-01-28 10:52:53,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:52:53,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:52:53,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:52:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:52:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:52:53,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 489 [2023-01-28 10:52:53,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 10:52:53,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:52:53,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 489 [2023-01-28 10:52:53,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:52:53,547 INFO L130 PetriNetUnfolder]: 2607/3584 cut-off events. [2023-01-28 10:52:53,548 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2023-01-28 10:52:53,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7119 conditions, 3584 events. 2607/3584 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 16023 event pairs, 498 based on Foata normal form. 1/2296 useless extension candidates. Maximal degree in co-relation 5886. Up to 2275 conditions per place. [2023-01-28 10:52:53,572 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 49 selfloop transitions, 3 changer transitions 1/59 dead transitions. [2023-01-28 10:52:53,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 263 flow [2023-01-28 10:52:53,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:52:53,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:52:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2023-01-28 10:52:53,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887525562372188 [2023-01-28 10:52:53,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2023-01-28 10:52:53,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2023-01-28 10:52:53,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:52:53,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2023-01-28 10:52:53,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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 10:52:53,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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 10:52:53,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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 10:52:53,610 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 102 flow. Second operand 3 states and 717 transitions. [2023-01-28 10:52:53,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 263 flow [2023-01-28 10:52:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 237 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 10:52:53,620 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 105 flow [2023-01-28 10:52:53,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-01-28 10:52:53,626 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-01-28 10:52:53,627 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 105 flow [2023-01-28 10:52:53,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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 10:52:53,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:52:53,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:52:53,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:52:53,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:52:53,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:52:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash 723466093, now seen corresponding path program 1 times [2023-01-28 10:52:53,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:52:53,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247105619] [2023-01-28 10:52:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:52:53,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:52:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:52:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:52:53,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:52:53,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247105619] [2023-01-28 10:52:53,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247105619] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:52:53,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:52:53,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 10:52:53,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985939399] [2023-01-28 10:52:53,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:52:53,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:52:53,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:52:53,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:52:53,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:52:53,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-28 10:52:53,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 10:52:53,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:52:53,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-28 10:52:53,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:52:54,262 INFO L130 PetriNetUnfolder]: 3844/5077 cut-off events. [2023-01-28 10:52:54,262 INFO L131 PetriNetUnfolder]: For 756/756 co-relation queries the response was YES. [2023-01-28 10:52:54,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11208 conditions, 5077 events. 3844/5077 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22753 event pairs, 982 based on Foata normal form. 120/4244 useless extension candidates. Maximal degree in co-relation 4019. Up to 3577 conditions per place. [2023-01-28 10:52:54,289 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 60 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-01-28 10:52:54,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 66 transitions, 293 flow [2023-01-28 10:52:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:52:54,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:52:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-01-28 10:52:54,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48466257668711654 [2023-01-28 10:52:54,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-01-28 10:52:54,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-01-28 10:52:54,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:52:54,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-01-28 10:52:54,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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 10:52:54,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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 10:52:54,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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 10:52:54,297 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 105 flow. Second operand 3 states and 711 transitions. [2023-01-28 10:52:54,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 66 transitions, 293 flow [2023-01-28 10:52:54,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:52:54,300 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 116 flow [2023-01-28 10:52:54,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-01-28 10:52:54,303 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2023-01-28 10:52:54,303 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 116 flow [2023-01-28 10:52:54,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 10:52:54,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:52:54,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:52:54,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 10:52:54,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:52:54,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:52:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -885024255, now seen corresponding path program 1 times [2023-01-28 10:52:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:52:54,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877791817] [2023-01-28 10:52:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:52:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:52:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:52:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:52:54,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:52:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877791817] [2023-01-28 10:52:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877791817] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:52:54,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:52:54,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 10:52:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023008878] [2023-01-28 10:52:54,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:52:54,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:52:54,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:52:54,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:52:54,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:52:54,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 489 [2023-01-28 10:52:54,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 10:52:54,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:52:54,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 489 [2023-01-28 10:52:54,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:52:54,845 INFO L130 PetriNetUnfolder]: 3601/4881 cut-off events. [2023-01-28 10:52:54,845 INFO L131 PetriNetUnfolder]: For 1832/1832 co-relation queries the response was YES. [2023-01-28 10:52:54,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11395 conditions, 4881 events. 3601/4881 cut-off events. For 1832/1832 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 23217 event pairs, 937 based on Foata normal form. 106/4546 useless extension candidates. Maximal degree in co-relation 8167. Up to 3548 conditions per place. [2023-01-28 10:52:54,870 INFO L137 encePairwiseOnDemand]: 486/489 looper letters, 60 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-01-28 10:52:54,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 66 transitions, 309 flow [2023-01-28 10:52:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:52:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:52:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-01-28 10:52:54,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4832992501704158 [2023-01-28 10:52:54,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-01-28 10:52:54,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-01-28 10:52:54,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:52:54,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-01-28 10:52:54,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 10:52:54,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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 10:52:54,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 489.0) internal successors, (1956), 4 states have internal predecessors, (1956), 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 10:52:54,878 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 116 flow. Second operand 3 states and 709 transitions. [2023-01-28 10:52:54,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 66 transitions, 309 flow [2023-01-28 10:52:54,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 66 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:52:54,881 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 128 flow [2023-01-28 10:52:54,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-01-28 10:52:54,882 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-01-28 10:52:54,882 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 128 flow [2023-01-28 10:52:54,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 10:52:54,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:52:54,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:52:54,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 10:52:54,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:52:54,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:52:54,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1988951730, now seen corresponding path program 1 times [2023-01-28 10:52:54,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:52:54,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941267835] [2023-01-28 10:52:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:52:54,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:52:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:52:55,024 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 10:52:55,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:52:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941267835] [2023-01-28 10:52:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941267835] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:52:55,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:52:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 10:52:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573626170] [2023-01-28 10:52:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:52:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:52:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:52:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:52:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:52:55,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-28 10:52:55,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 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 10:52:55,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:52:55,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-28 10:52:55,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:52:55,470 INFO L130 PetriNetUnfolder]: 3191/4597 cut-off events. [2023-01-28 10:52:55,470 INFO L131 PetriNetUnfolder]: For 2513/2513 co-relation queries the response was YES. [2023-01-28 10:52:55,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11225 conditions, 4597 events. 3191/4597 cut-off events. For 2513/2513 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24355 event pairs, 2374 based on Foata normal form. 95/4561 useless extension candidates. Maximal degree in co-relation 5018. Up to 3497 conditions per place. [2023-01-28 10:52:55,494 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 65 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-01-28 10:52:55,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 349 flow [2023-01-28 10:52:55,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:52:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:52:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 811 transitions. [2023-01-28 10:52:55,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41462167689161555 [2023-01-28 10:52:55,497 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 811 transitions. [2023-01-28 10:52:55,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 811 transitions. [2023-01-28 10:52:55,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:52:55,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 811 transitions. [2023-01-28 10:52:55,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 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 10:52:55,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 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 10:52:55,504 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 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 10:52:55,504 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 128 flow. Second operand 4 states and 811 transitions. [2023-01-28 10:52:55,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 349 flow [2023-01-28 10:52:55,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:52:55,506 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 146 flow [2023-01-28 10:52:55,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-01-28 10:52:55,507 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-01-28 10:52:55,507 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 146 flow [2023-01-28 10:52:55,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 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 10:52:55,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:52:55,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:52:55,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 10:52:55,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:52:55,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:52:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1525607470, now seen corresponding path program 1 times [2023-01-28 10:52:55,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:52:55,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632331416] [2023-01-28 10:52:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:52:55,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:52:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:52:55,651 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 10:52:55,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:52:55,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632331416] [2023-01-28 10:52:55,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632331416] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:52:55,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:52:55,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:52:55,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95445642] [2023-01-28 10:52:55,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:52:55,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:52:55,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:52:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:52:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:52:55,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 489 [2023-01-28 10:52:55,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 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 10:52:55,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:52:55,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 489 [2023-01-28 10:52:55,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:52:56,226 INFO L130 PetriNetUnfolder]: 3933/5811 cut-off events. [2023-01-28 10:52:56,226 INFO L131 PetriNetUnfolder]: For 3196/3196 co-relation queries the response was YES. [2023-01-28 10:52:56,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13895 conditions, 5811 events. 3933/5811 cut-off events. For 3196/3196 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33531 event pairs, 3012 based on Foata normal form. 166/5823 useless extension candidates. Maximal degree in co-relation 11262. Up to 4410 conditions per place. [2023-01-28 10:52:56,259 INFO L137 encePairwiseOnDemand]: 485/489 looper letters, 64 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-01-28 10:52:56,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 364 flow [2023-01-28 10:52:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:52:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:52:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 809 transitions. [2023-01-28 10:52:56,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41359918200408996 [2023-01-28 10:52:56,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 809 transitions. [2023-01-28 10:52:56,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 809 transitions. [2023-01-28 10:52:56,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:52:56,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 809 transitions. [2023-01-28 10:52:56,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 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 10:52:56,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 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 10:52:56,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 489.0) internal successors, (2445), 5 states have internal predecessors, (2445), 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 10:52:56,269 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 146 flow. Second operand 4 states and 809 transitions. [2023-01-28 10:52:56,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 364 flow [2023-01-28 10:52:56,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:52:56,273 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 165 flow [2023-01-28 10:52:56,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-01-28 10:52:56,275 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2023-01-28 10:52:56,275 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 165 flow [2023-01-28 10:52:56,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.75) internal successors, (775), 4 states have internal predecessors, (775), 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 10:52:56,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:52:56,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:52:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 10:52:56,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:52:56,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:52:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1648494691, now seen corresponding path program 1 times [2023-01-28 10:52:56,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:52:56,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910684984] [2023-01-28 10:52:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:52:56,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:52:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:52:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:52:56,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:52:56,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910684984] [2023-01-28 10:52:56,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910684984] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:52:56,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:52:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:52:56,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369084011] [2023-01-28 10:52:56,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:52:56,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:52:56,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:52:56,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:52:56,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:52:56,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 10:52:56,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 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 10:52:56,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:52:56,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 10:52:56,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:52:58,499 INFO L130 PetriNetUnfolder]: 18637/25918 cut-off events. [2023-01-28 10:52:58,499 INFO L131 PetriNetUnfolder]: For 7718/7718 co-relation queries the response was YES. [2023-01-28 10:52:58,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59121 conditions, 25918 events. 18637/25918 cut-off events. For 7718/7718 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 143382 event pairs, 7054 based on Foata normal form. 292/26200 useless extension candidates. Maximal degree in co-relation 41583. Up to 9757 conditions per place. [2023-01-28 10:52:58,615 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 123 selfloop transitions, 7 changer transitions 0/130 dead transitions. [2023-01-28 10:52:58,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 130 transitions, 663 flow [2023-01-28 10:52:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:52:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:52:58,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1167 transitions. [2023-01-28 10:52:58,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39775051124744376 [2023-01-28 10:52:58,619 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1167 transitions. [2023-01-28 10:52:58,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1167 transitions. [2023-01-28 10:52:58,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:52:58,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1167 transitions. [2023-01-28 10:52:58,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 194.5) internal successors, (1167), 6 states have internal predecessors, (1167), 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 10:52:58,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:52:58,627 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:52:58,627 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 165 flow. Second operand 6 states and 1167 transitions. [2023-01-28 10:52:58,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 130 transitions, 663 flow [2023-01-28 10:52:58,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 130 transitions, 658 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:52:58,633 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 204 flow [2023-01-28 10:52:58,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-01-28 10:52:58,635 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2023-01-28 10:52:58,635 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 204 flow [2023-01-28 10:52:58,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 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 10:52:58,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:52:58,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:52:58,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 10:52:58,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:52:58,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:52:58,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1291535771, now seen corresponding path program 1 times [2023-01-28 10:52:58,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:52:58,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746052390] [2023-01-28 10:52:58,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:52:58,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:52:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:52:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:52:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:52:59,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746052390] [2023-01-28 10:52:59,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746052390] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:52:59,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:52:59,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:52:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471232676] [2023-01-28 10:52:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:52:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:52:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:52:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:52:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:52:59,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 10:52:59,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 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 10:52:59,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:52:59,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 10:52:59,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:00,712 INFO L130 PetriNetUnfolder]: 17505/24308 cut-off events. [2023-01-28 10:53:00,712 INFO L131 PetriNetUnfolder]: For 10699/10699 co-relation queries the response was YES. [2023-01-28 10:53:00,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58510 conditions, 24308 events. 17505/24308 cut-off events. For 10699/10699 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 132591 event pairs, 8084 based on Foata normal form. 192/24496 useless extension candidates. Maximal degree in co-relation 43832. Up to 11795 conditions per place. [2023-01-28 10:53:00,803 INFO L137 encePairwiseOnDemand]: 482/489 looper letters, 75 selfloop transitions, 5 changer transitions 37/117 dead transitions. [2023-01-28 10:53:00,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 117 transitions, 624 flow [2023-01-28 10:53:00,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:00,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1156 transitions. [2023-01-28 10:53:00,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3940013633265167 [2023-01-28 10:53:00,806 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1156 transitions. [2023-01-28 10:53:00,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1156 transitions. [2023-01-28 10:53:00,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:00,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1156 transitions. [2023-01-28 10:53:00,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 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 10:53:00,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:00,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:00,814 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 204 flow. Second operand 6 states and 1156 transitions. [2023-01-28 10:53:00,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 117 transitions, 624 flow [2023-01-28 10:53:00,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 619 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:00,823 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 211 flow [2023-01-28 10:53:00,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2023-01-28 10:53:00,824 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-01-28 10:53:00,824 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 211 flow [2023-01-28 10:53:00,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.5) internal successors, (1083), 6 states have internal predecessors, (1083), 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 10:53:00,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:00,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:00,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 10:53:00,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:53:00,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 838533375, now seen corresponding path program 1 times [2023-01-28 10:53:00,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067865415] [2023-01-28 10:53:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:00,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:53:01,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:01,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067865415] [2023-01-28 10:53:01,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067865415] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:01,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:01,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381527425] [2023-01-28 10:53:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:01,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:01,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-28 10:53:01,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 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 10:53:01,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:01,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-28 10:53:01,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:02,654 INFO L130 PetriNetUnfolder]: 15039/20526 cut-off events. [2023-01-28 10:53:02,655 INFO L131 PetriNetUnfolder]: For 12445/12445 co-relation queries the response was YES. [2023-01-28 10:53:02,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53424 conditions, 20526 events. 15039/20526 cut-off events. For 12445/12445 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 102850 event pairs, 3884 based on Foata normal form. 1176/21698 useless extension candidates. Maximal degree in co-relation 41946. Up to 9784 conditions per place. [2023-01-28 10:53:02,723 INFO L137 encePairwiseOnDemand]: 481/489 looper letters, 104 selfloop transitions, 9 changer transitions 11/124 dead transitions. [2023-01-28 10:53:02,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 721 flow [2023-01-28 10:53:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:53:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:53:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1302 transitions. [2023-01-28 10:53:02,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3803680981595092 [2023-01-28 10:53:02,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1302 transitions. [2023-01-28 10:53:02,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1302 transitions. [2023-01-28 10:53:02,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:02,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1302 transitions. [2023-01-28 10:53:02,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 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 10:53:02,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 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 10:53:02,735 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 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 10:53:02,735 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 211 flow. Second operand 7 states and 1302 transitions. [2023-01-28 10:53:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 721 flow [2023-01-28 10:53:02,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 689 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-01-28 10:53:02,745 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 255 flow [2023-01-28 10:53:02,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-01-28 10:53:02,747 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2023-01-28 10:53:02,747 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 255 flow [2023-01-28 10:53:02,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 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 10:53:02,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:02,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 10:53:02,748 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:53:02,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash 941635635, now seen corresponding path program 1 times [2023-01-28 10:53:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:02,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508516520] [2023-01-28 10:53:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:53:03,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:03,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508516520] [2023-01-28 10:53:03,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508516520] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:03,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:03,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673429523] [2023-01-28 10:53:03,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:03,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:03,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 489 [2023-01-28 10:53:03,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 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 10:53:03,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:03,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 489 [2023-01-28 10:53:03,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:03,995 INFO L130 PetriNetUnfolder]: 9753/13044 cut-off events. [2023-01-28 10:53:03,996 INFO L131 PetriNetUnfolder]: For 13624/13624 co-relation queries the response was YES. [2023-01-28 10:53:04,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37960 conditions, 13044 events. 9753/13044 cut-off events. For 13624/13624 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 62178 event pairs, 826 based on Foata normal form. 548/13590 useless extension candidates. Maximal degree in co-relation 32637. Up to 7564 conditions per place. [2023-01-28 10:53:04,059 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 103 selfloop transitions, 5 changer transitions 1/109 dead transitions. [2023-01-28 10:53:04,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 723 flow [2023-01-28 10:53:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1129 transitions. [2023-01-28 10:53:04,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38479890933878663 [2023-01-28 10:53:04,064 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1129 transitions. [2023-01-28 10:53:04,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1129 transitions. [2023-01-28 10:53:04,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:04,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1129 transitions. [2023-01-28 10:53:04,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 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 10:53:04,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:04,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:04,072 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 255 flow. Second operand 6 states and 1129 transitions. [2023-01-28 10:53:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 723 flow [2023-01-28 10:53:04,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 706 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-28 10:53:04,087 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 252 flow [2023-01-28 10:53:04,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2023-01-28 10:53:04,088 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2023-01-28 10:53:04,088 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 252 flow [2023-01-28 10:53:04,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 180.66666666666666) internal successors, (1084), 6 states have internal predecessors, (1084), 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 10:53:04,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:04,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:04,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 10:53:04,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:53:04,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash 860652039, now seen corresponding path program 1 times [2023-01-28 10:53:04,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397948501] [2023-01-28 10:53:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:53:04,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397948501] [2023-01-28 10:53:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397948501] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:04,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:53:04,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:53:04,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821546868] [2023-01-28 10:53:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:04,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 10:53:04,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 10:53:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 10:53:04,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 489 [2023-01-28 10:53:04,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 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 10:53:04,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:04,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 489 [2023-01-28 10:53:04,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:05,499 INFO L130 PetriNetUnfolder]: 10068/13334 cut-off events. [2023-01-28 10:53:05,499 INFO L131 PetriNetUnfolder]: For 16560/16560 co-relation queries the response was YES. [2023-01-28 10:53:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40538 conditions, 13334 events. 10068/13334 cut-off events. For 16560/16560 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 60391 event pairs, 1721 based on Foata normal form. 608/13941 useless extension candidates. Maximal degree in co-relation 40504. Up to 8566 conditions per place. [2023-01-28 10:53:05,578 INFO L137 encePairwiseOnDemand]: 481/489 looper letters, 125 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2023-01-28 10:53:05,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 134 transitions, 907 flow [2023-01-28 10:53:05,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 10:53:05,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 10:53:05,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1292 transitions. [2023-01-28 10:53:05,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37744668419515043 [2023-01-28 10:53:05,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1292 transitions. [2023-01-28 10:53:05,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1292 transitions. [2023-01-28 10:53:05,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:05,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1292 transitions. [2023-01-28 10:53:05,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.57142857142858) internal successors, (1292), 7 states have internal predecessors, (1292), 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 10:53:05,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 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 10:53:05,591 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 489.0) internal successors, (3912), 8 states have internal predecessors, (3912), 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 10:53:05,591 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 252 flow. Second operand 7 states and 1292 transitions. [2023-01-28 10:53:05,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 134 transitions, 907 flow [2023-01-28 10:53:05,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 134 transitions, 884 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-01-28 10:53:05,605 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 309 flow [2023-01-28 10:53:05,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2023-01-28 10:53:05,606 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2023-01-28 10:53:05,606 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 309 flow [2023-01-28 10:53:05,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 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 10:53:05,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:05,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:05,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 10:53:05,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:53:05,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:05,608 INFO L85 PathProgramCache]: Analyzing trace with hash -90881913, now seen corresponding path program 1 times [2023-01-28 10:53:05,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:05,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113779894] [2023-01-28 10:53:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:05,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:53:05,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113779894] [2023-01-28 10:53:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113779894] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307531594] [2023-01-28 10:53:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:05,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:05,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:05,820 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 10:53:05,822 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 10:53:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 10:53:05,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:53:06,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 10:53:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307531594] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 10:53:06,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-01-28 10:53:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67063544] [2023-01-28 10:53:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:53:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:53:06,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 10:53:06,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 489 [2023-01-28 10:53:06,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 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 10:53:06,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:06,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 489 [2023-01-28 10:53:06,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:07,571 INFO L130 PetriNetUnfolder]: 12987/16821 cut-off events. [2023-01-28 10:53:07,572 INFO L131 PetriNetUnfolder]: For 35922/37169 co-relation queries the response was YES. [2023-01-28 10:53:07,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59886 conditions, 16821 events. 12987/16821 cut-off events. For 35922/37169 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 83272 event pairs, 1905 based on Foata normal form. 949/17735 useless extension candidates. Maximal degree in co-relation 59851. Up to 5781 conditions per place. [2023-01-28 10:53:07,684 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 121 selfloop transitions, 18 changer transitions 0/145 dead transitions. [2023-01-28 10:53:07,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 145 transitions, 1015 flow [2023-01-28 10:53:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2023-01-28 10:53:07,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47171097477845947 [2023-01-28 10:53:07,688 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2023-01-28 10:53:07,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2023-01-28 10:53:07,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:07,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2023-01-28 10:53:07,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 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 10:53:07,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:07,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:07,708 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 309 flow. Second operand 6 states and 1384 transitions. [2023-01-28 10:53:07,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 145 transitions, 1015 flow [2023-01-28 10:53:07,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 1001 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 10:53:07,750 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 463 flow [2023-01-28 10:53:07,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-01-28 10:53:07,751 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2023-01-28 10:53:07,751 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 463 flow [2023-01-28 10:53:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 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 10:53:07,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:07,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 10:53:07,957 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,SelfDestructingSolverStorable10 [2023-01-28 10:53:07,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:53:07,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1489168185, now seen corresponding path program 2 times [2023-01-28 10:53:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:07,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438885270] [2023-01-28 10:53:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:53:08,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:08,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438885270] [2023-01-28 10:53:08,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438885270] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:08,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947141578] [2023-01-28 10:53:08,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:53:08,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:08,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:08,152 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 10:53:08,158 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 10:53:08,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:53:08,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:53:08,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 10:53:08,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:53:08,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 10:53:08,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947141578] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:53:08,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 10:53:08,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-01-28 10:53:08,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947166021] [2023-01-28 10:53:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:53:08,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:53:08,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:53:08,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:53:08,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 10:53:08,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 489 [2023-01-28 10:53:08,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 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 10:53:08,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:53:08,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 489 [2023-01-28 10:53:08,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:53:11,870 INFO L130 PetriNetUnfolder]: 28667/38348 cut-off events. [2023-01-28 10:53:11,870 INFO L131 PetriNetUnfolder]: For 121070/124102 co-relation queries the response was YES. [2023-01-28 10:53:11,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145761 conditions, 38348 events. 28667/38348 cut-off events. For 121070/124102 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 217757 event pairs, 3648 based on Foata normal form. 2901/40778 useless extension candidates. Maximal degree in co-relation 145722. Up to 12111 conditions per place. [2023-01-28 10:53:12,106 INFO L137 encePairwiseOnDemand]: 483/489 looper letters, 149 selfloop transitions, 18 changer transitions 0/178 dead transitions. [2023-01-28 10:53:12,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 178 transitions, 1496 flow [2023-01-28 10:53:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:53:12,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:53:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1386 transitions. [2023-01-28 10:53:12,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723926380368098 [2023-01-28 10:53:12,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1386 transitions. [2023-01-28 10:53:12,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1386 transitions. [2023-01-28 10:53:12,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:53:12,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1386 transitions. [2023-01-28 10:53:12,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 10:53:12,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:12,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 489.0) internal successors, (3423), 7 states have internal predecessors, (3423), 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 10:53:12,116 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 463 flow. Second operand 6 states and 1386 transitions. [2023-01-28 10:53:12,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 178 transitions, 1496 flow [2023-01-28 10:53:12,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 178 transitions, 1487 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 10:53:12,212 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 623 flow [2023-01-28 10:53:12,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=489, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2023-01-28 10:53:12,212 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2023-01-28 10:53:12,213 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 623 flow [2023-01-28 10:53:12,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 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 10:53:12,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:53:12,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:53:12,218 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 10:53:12,417 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,SelfDestructingSolverStorable11 [2023-01-28 10:53:12,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 10:53:12,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:53:12,417 INFO L85 PathProgramCache]: Analyzing trace with hash 105624180, now seen corresponding path program 1 times [2023-01-28 10:53:12,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:53:12,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243968711] [2023-01-28 10:53:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:12,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:53:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:15,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:53:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243968711] [2023-01-28 10:53:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243968711] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:53:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916177151] [2023-01-28 10:53:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:53:15,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:53:15,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:53:15,457 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 10:53:15,459 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 10:53:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:53:15,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 80 conjunts are in the unsatisfiable core [2023-01-28 10:53:15,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:53:16,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:16,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:16,644 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:53:16,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2023-01-28 10:53:16,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:16,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:53:16,959 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 10:53:16,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2023-01-28 10:53:17,654 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:53:17,655 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 10:53:17,668 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 10:53:17,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2023-01-28 10:53:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:53:17,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:53:18,356 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_back~0) (<= c_~n1~0 c_~q1_front~0) (< c_~q1_front~0 0) (< c_~q1_back~0 0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0) (let ((.cse1 (+ c_~f~0.offset (* c_~i~0 4))) (.cse3 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) (.cse4 (+ (* c_~q1_front~0 4) c_~q1~0.offset)) (.cse5 (+ c_~q2~0.offset (* c_~q2_front~0 4)))) (and (forall ((v_ArrVal_568 (Array Int Int)) (~q1~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse2 (select .cse0 ~q1~0.base))) (or (not (= (select (select .cse0 c_~f~0.base) .cse1) (select .cse2 .cse3))) (< 0 (+ (select .cse2 .cse4) (select (select .cse0 c_~q2~0.base) .cse5) c_~total~0 1)))))) (forall ((v_ArrVal_568 (Array Int Int)) (~q1~0.base Int)) (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse7 (select .cse6 ~q1~0.base))) (or (not (= (select (select .cse6 c_~f~0.base) .cse1) (select .cse7 .cse3))) (<= (+ (select .cse7 .cse4) (select (select .cse6 c_~q2~0.base) .cse5) c_~total~0) 0)))))))) is different from false [2023-01-28 10:53:18,650 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~n1~0 c_~q1_back~0) (<= c_~n1~0 c_~q1_front~0) (< c_~q1_front~0 0) (let ((.cse1 (+ (* c_~q1_back~0 4) c_~q1~0.offset)) (.cse3 (+ c_~f~0.offset (* c_~i~0 4))) (.cse4 (+ c_~q2~0.offset (* c_~q2_front~0 4))) (.cse5 (+ (* c_~q1_front~0 4) c_~q1~0.offset))) (and (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_567 (Array Int Int)) (~q1~0.base Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_567) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse0 (select .cse2 ~q1~0.base))) (or (not (= (select .cse0 .cse1) (select (select .cse2 c_~f~0.base) .cse3))) (<= (+ (select (select .cse2 c_~q2~0.base) .cse4) c_~total~0 (select .cse0 .cse5)) 0))))) (forall ((v_ArrVal_568 (Array Int Int)) (v_ArrVal_567 (Array Int Int)) (~q1~0.base Int)) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_567) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_568))) (let ((.cse6 (select .cse7 ~q1~0.base))) (or (not (= (select .cse6 .cse1) (select (select .cse7 c_~f~0.base) .cse3))) (< 0 (+ (select (select .cse7 c_~q2~0.base) .cse4) c_~total~0 (select .cse6 .cse5) 1)))))))) (< c_~q1_back~0 0) (<= c_~n2~0 c_~q2_front~0) (< c_~q2_front~0 0)) is different from false [2023-01-28 10:53:19,161 INFO L321 Elim1Store]: treesize reduction 22, result has 95.1 percent of original size [2023-01-28 10:53:19,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 4096 treesize of output 3932 [2023-01-28 10:53:19,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:53:19,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1513 treesize of output 1506 [2023-01-28 10:53:19,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:53:19,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1417 treesize of output 1314 [2023-01-28 10:53:20,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:53:20,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1225 treesize of output 1122 [2023-01-28 10:53:20,269 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:53:20,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1033 treesize of output 1026 [2023-01-28 11:04:40,928 WARN L222 SmtUtils]: Spent 12.70s on a formula simplification. DAG size of input: 1428 DAG size of output: 1494 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 11:06:39,203 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 11:06:39,209 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:06:39,209 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 11:06:39,220 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 11:06:39,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:06:39,409 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-51-6-4-6-6-6-5-10-3-9-3-7-3-6-3-4-3-3-2-3-2-1 context. [2023-01-28 11:06:39,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 11:06:39,411 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 11:06:39,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 11:06:39,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 11:06:39,412 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:06:39,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:06:39,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:06:39,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:06:39 BasicIcfg [2023-01-28 11:06:39,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:06:39,418 INFO L158 Benchmark]: Toolchain (without parser) took 836662.88ms. Allocated memory was 570.4MB in the beginning and 6.4GB in the end (delta: 5.9GB). Free memory was 521.4MB in the beginning and 5.8GB in the end (delta: -5.2GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 11:06:39,418 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 415.2MB. Free memory is still 364.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:06:39,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.25ms. Allocated memory is still 570.4MB. Free memory was 521.4MB in the beginning and 508.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 11:06:39,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.79ms. Allocated memory is still 570.4MB. Free memory was 508.5MB in the beginning and 505.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:06:39,419 INFO L158 Benchmark]: Boogie Preprocessor took 48.80ms. Allocated memory is still 570.4MB. Free memory was 505.7MB in the beginning and 503.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:06:39,419 INFO L158 Benchmark]: RCFGBuilder took 792.19ms. Allocated memory is still 570.4MB. Free memory was 503.2MB in the beginning and 517.6MB in the end (delta: -14.4MB). Peak memory consumption was 45.1MB. Max. memory is 16.0GB. [2023-01-28 11:06:39,419 INFO L158 Benchmark]: TraceAbstraction took 835528.27ms. Allocated memory was 570.4MB in the beginning and 6.4GB in the end (delta: 5.9GB). Free memory was 516.6MB in the beginning and 5.8GB in the end (delta: -5.2GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 11:06:39,421 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 415.2MB. Free memory is still 364.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 246.25ms. Allocated memory is still 570.4MB. Free memory was 521.4MB in the beginning and 508.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.79ms. Allocated memory is still 570.4MB. Free memory was 508.5MB in the beginning and 505.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.80ms. Allocated memory is still 570.4MB. Free memory was 505.7MB in the beginning and 503.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 792.19ms. Allocated memory is still 570.4MB. Free memory was 503.2MB in the beginning and 517.6MB in the end (delta: -14.4MB). Peak memory consumption was 45.1MB. Max. memory is 16.0GB. * TraceAbstraction took 835528.27ms. Allocated memory was 570.4MB in the beginning and 6.4GB in the end (delta: 5.9GB). Free memory was 516.6MB in the beginning and 5.8GB in the end (delta: -5.2GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.3s, 228 PlacesBefore, 45 PlacesAfterwards, 237 TransitionsBefore, 39 TransitionsAfterwards, 2000 CoEnabledTransitionPairs, 8 FixpointIterations, 154 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 32 TrivialYvCompositions, 8 ConcurrentYvCompositions, 15 ChoiceCompositions, 236 TotalNumberOfCompositions, 4059 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2869, independent: 2775, independent conditional: 0, independent unconditional: 2775, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1044, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2869, independent: 1750, independent conditional: 0, independent unconditional: 1750, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 1044, unknown conditional: 0, unknown unconditional: 1044] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 152, Positive conditional cache size: 0, Positive unconditional cache size: 152, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-51-6-4-6-6-6-5-10-3-9-3-7-3-6-3-4-3-3-2-3-2-1 context. - TimeoutResultAtElement [Line: 146]: 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 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-51-6-4-6-6-6-5-10-3-9-3-7-3-6-3-4-3-3-2-3-2-1 context. - TimeoutResultAtElement [Line: 148]: 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 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-51-6-4-6-6-6-5-10-3-9-3-7-3-6-3-4-3-3-2-3-2-1 context. - TimeoutResultAtElement [Line: 145]: 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 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-51-6-4-6-6-6-5-10-3-9-3-7-3-6-3-4-3-3-2-3-2-1 context. - TimeoutResultAtElement [Line: 147]: 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 40 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-51-6-4-6-6-6-5-10-3-9-3-7-3-6-3-4-3-3-2-3-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 266 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 835.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 638 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 638 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1688 IncrementalHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 5 mSDtfsCounter, 1688 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=623occurred in iteration=12, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 471 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 1293 SizeOfPredicates, 4 NumberOfNonLiveVariables, 834 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 48/50 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