/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/chl-chromosome-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 08:47:37,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 08:47:37,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 08:47:37,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 08:47:37,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 08:47:37,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 08:47:37,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 08:47:37,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 08:47:37,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 08:47:37,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 08:47:37,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 08:47:37,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 08:47:37,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 08:47:37,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 08:47:37,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 08:47:37,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 08:47:37,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 08:47:37,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 08:47:37,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 08:47:37,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 08:47:37,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 08:47:37,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 08:47:37,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 08:47:37,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 08:47:37,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 08:47:37,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 08:47:37,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 08:47:37,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 08:47:37,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 08:47:37,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 08:47:37,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 08:47:37,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 08:47:37,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 08:47:37,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 08:47:37,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 08:47:37,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 08:47:37,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 08:47:37,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 08:47:37,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 08:47:37,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 08:47:37,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 08:47:37,297 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 08:47:37,323 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 08:47:37,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 08:47:37,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 08:47:37,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 08:47:37,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 08:47:37,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 08:47:37,326 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 08:47:37,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 08:47:37,327 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 08:47:37,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 08:47:37,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 08:47:37,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 08:47:37,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 08:47:37,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 08:47:37,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 08:47:37,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 08:47:37,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:47:37,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 08:47:37,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 08:47:37,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 08:47:37,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 08:47:37,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 08:47:37,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 08:47:37,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 08:47:37,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 08:47:37,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 08:47:37,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 08:47:37,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 08:47:37,573 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 08:47:37,573 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 08:47:37,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-01-28 08:47:38,733 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 08:47:38,901 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 08:47:38,901 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-01-28 08:47:38,906 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc32dc6f9/629ecd37bed24da0996e75d9cab2ba4d/FLAG8d0091a72 [2023-01-28 08:47:38,918 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc32dc6f9/629ecd37bed24da0996e75d9cab2ba4d [2023-01-28 08:47:38,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 08:47:38,921 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 08:47:38,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 08:47:38,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 08:47:38,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 08:47:38,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:47:38" (1/1) ... [2023-01-28 08:47:38,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba334e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:38, skipping insertion in model container [2023-01-28 08:47:38,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:47:38" (1/1) ... [2023-01-28 08:47:38,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 08:47:38,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 08:47:39,091 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/chl-chromosome-subst.wvr.c[3097,3110] [2023-01-28 08:47:39,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:47:39,108 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 08:47:39,134 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/chl-chromosome-subst.wvr.c[3097,3110] [2023-01-28 08:47:39,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 08:47:39,151 INFO L208 MainTranslator]: Completed translation [2023-01-28 08:47:39,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39 WrapperNode [2023-01-28 08:47:39,152 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 08:47:39,153 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 08:47:39,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 08:47:39,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 08:47:39,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,213 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 281 [2023-01-28 08:47:39,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 08:47:39,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 08:47:39,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 08:47:39,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 08:47:39,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,240 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 08:47:39,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 08:47:39,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 08:47:39,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 08:47:39,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (1/1) ... [2023-01-28 08:47:39,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 08:47:39,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:39,274 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 08:47:39,279 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 08:47:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 08:47:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 08:47:39,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 08:47:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 08:47:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 08:47:39,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 08:47:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 08:47:39,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 08:47:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 08:47:39,309 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 08:47:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 08:47:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 08:47:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 08:47:39,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 08:47:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 08:47:39,311 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 08:47:39,404 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 08:47:39,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 08:47:39,846 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 08:47:39,856 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 08:47:39,856 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 08:47:39,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:47:39 BoogieIcfgContainer [2023-01-28 08:47:39,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 08:47:39,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 08:47:39,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 08:47:39,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 08:47:39,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:47:38" (1/3) ... [2023-01-28 08:47:39,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1519b5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:47:39, skipping insertion in model container [2023-01-28 08:47:39,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:47:39" (2/3) ... [2023-01-28 08:47:39,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1519b5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:47:39, skipping insertion in model container [2023-01-28 08:47:39,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:47:39" (3/3) ... [2023-01-28 08:47:39,865 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-01-28 08:47:39,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 08:47:39,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 08:47:39,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 08:47:39,976 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 08:47:40,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 324 transitions, 672 flow [2023-01-28 08:47:40,129 INFO L130 PetriNetUnfolder]: 29/321 cut-off events. [2023-01-28 08:47:40,130 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 08:47:40,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 321 events. 29/321 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 494 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-01-28 08:47:40,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 324 transitions, 672 flow [2023-01-28 08:47:40,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 311 transitions, 640 flow [2023-01-28 08:47:40,159 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 08:47:40,180 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 311 transitions, 640 flow [2023-01-28 08:47:40,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 311 transitions, 640 flow [2023-01-28 08:47:40,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 311 transitions, 640 flow [2023-01-28 08:47:40,251 INFO L130 PetriNetUnfolder]: 29/311 cut-off events. [2023-01-28 08:47:40,251 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 08:47:40,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 29/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 493 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 244. Up to 2 conditions per place. [2023-01-28 08:47:40,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 15390 [2023-01-28 08:47:47,839 INFO L134 LiptonReduction]: Checked pairs total: 14156 [2023-01-28 08:47:47,839 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-01-28 08:47:47,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 08:47:47,876 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;@71007f37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 08:47:47,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 08:47:47,888 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-01-28 08:47:47,889 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 08:47:47,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:47,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 08:47:47,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:47:47,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash -266383442, now seen corresponding path program 1 times [2023-01-28 08:47:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:47,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593275763] [2023-01-28 08:47:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:48,380 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 08:47:48,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:48,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593275763] [2023-01-28 08:47:48,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593275763] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:48,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:48,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:47:48,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029438854] [2023-01-28 08:47:48,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:48,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 08:47:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:48,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 08:47:48,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 08:47:48,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 676 [2023-01-28 08:47:48,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 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 08:47:48,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:48,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 676 [2023-01-28 08:47:48,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:48,574 INFO L130 PetriNetUnfolder]: 370/545 cut-off events. [2023-01-28 08:47:48,574 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-01-28 08:47:48,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 545 events. 370/545 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1529 event pairs, 253 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 936. Up to 543 conditions per place. [2023-01-28 08:47:48,581 INFO L137 encePairwiseOnDemand]: 668/676 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-01-28 08:47:48,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 150 flow [2023-01-28 08:47:48,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:47:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:47:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-01-28 08:47:48,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40433925049309666 [2023-01-28 08:47:48,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-01-28 08:47:48,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-01-28 08:47:48,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:48,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-01-28 08:47:48,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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 08:47:48,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 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 08:47:48,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 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 08:47:48,629 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 820 transitions. [2023-01-28 08:47:48,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 150 flow [2023-01-28 08:47:48,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 08:47:48,636 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 98 flow [2023-01-28 08:47:48,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-01-28 08:47:48,642 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-01-28 08:47:48,643 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 98 flow [2023-01-28 08:47:48,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 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 08:47:48,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:48,644 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] [2023-01-28 08:47:48,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 08:47:48,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:47:48,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:48,645 INFO L85 PathProgramCache]: Analyzing trace with hash -820998595, now seen corresponding path program 1 times [2023-01-28 08:47:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:48,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272206284] [2023-01-28 08:47:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:48,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:47:48,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:48,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272206284] [2023-01-28 08:47:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272206284] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:48,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 08:47:48,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 08:47:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674861687] [2023-01-28 08:47:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:48,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 08:47:48,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 08:47:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 08:47:48,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 676 [2023-01-28 08:47:48,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 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 08:47:48,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:48,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 676 [2023-01-28 08:47:48,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:49,048 INFO L130 PetriNetUnfolder]: 658/966 cut-off events. [2023-01-28 08:47:49,048 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 08:47:49,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 966 events. 658/966 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3451 event pairs, 253 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 1954. Up to 546 conditions per place. [2023-01-28 08:47:49,052 INFO L137 encePairwiseOnDemand]: 673/676 looper letters, 45 selfloop transitions, 2 changer transitions 6/53 dead transitions. [2023-01-28 08:47:49,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 53 transitions, 249 flow [2023-01-28 08:47:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 08:47:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 08:47:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 894 transitions. [2023-01-28 08:47:49,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4408284023668639 [2023-01-28 08:47:49,056 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 894 transitions. [2023-01-28 08:47:49,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 894 transitions. [2023-01-28 08:47:49,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:49,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 894 transitions. [2023-01-28 08:47:49,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.0) internal successors, (894), 3 states have internal predecessors, (894), 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 08:47:49,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 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 08:47:49,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 676.0) internal successors, (2704), 4 states have internal predecessors, (2704), 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 08:47:49,063 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 98 flow. Second operand 3 states and 894 transitions. [2023-01-28 08:47:49,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 53 transitions, 249 flow [2023-01-28 08:47:49,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:47:49,065 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 104 flow [2023-01-28 08:47:49,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2023-01-28 08:47:49,066 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-01-28 08:47:49,067 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 104 flow [2023-01-28 08:47:49,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.25) internal successors, (1149), 4 states have internal predecessors, (1149), 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 08:47:49,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:49,068 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] [2023-01-28 08:47:49,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 08:47:49,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:47:49,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1628203704, now seen corresponding path program 1 times [2023-01-28 08:47:49,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:49,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327409016] [2023-01-28 08:47:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:49,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:49,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:47:49,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:49,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327409016] [2023-01-28 08:47:49,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327409016] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:49,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033426699] [2023-01-28 08:47:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:49,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:49,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:49,209 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 08:47:49,260 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 08:47:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:49,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 08:47:49,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:47:49,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:47:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 08:47:49,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033426699] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:47:49,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:47:49,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-28 08:47:49,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014917175] [2023-01-28 08:47:49,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:47:49,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 08:47:49,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:49,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 08:47:49,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:47:49,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 676 [2023-01-28 08:47:49,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 265.375) internal successors, (2123), 8 states have internal predecessors, (2123), 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 08:47:49,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:49,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 676 [2023-01-28 08:47:49,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:49,733 INFO L130 PetriNetUnfolder]: 658/975 cut-off events. [2023-01-28 08:47:49,733 INFO L131 PetriNetUnfolder]: For 167/167 co-relation queries the response was YES. [2023-01-28 08:47:49,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 975 events. 658/975 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3195 event pairs, 477 based on Foata normal form. 0/760 useless extension candidates. Maximal degree in co-relation 2085. Up to 964 conditions per place. [2023-01-28 08:47:49,738 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 28 selfloop transitions, 15 changer transitions 0/43 dead transitions. [2023-01-28 08:47:49,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 226 flow [2023-01-28 08:47:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:47:49,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:47:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1617 transitions. [2023-01-28 08:47:49,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39866863905325445 [2023-01-28 08:47:49,743 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1617 transitions. [2023-01-28 08:47:49,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1617 transitions. [2023-01-28 08:47:49,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:49,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1617 transitions. [2023-01-28 08:47:49,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.5) internal successors, (1617), 6 states have internal predecessors, (1617), 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 08:47:49,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 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 08:47:49,756 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 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 08:47:49,756 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 104 flow. Second operand 6 states and 1617 transitions. [2023-01-28 08:47:49,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 226 flow [2023-01-28 08:47:49,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 08:47:49,758 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 198 flow [2023-01-28 08:47:49,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-01-28 08:47:49,759 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-01-28 08:47:49,759 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 198 flow [2023-01-28 08:47:49,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 265.375) internal successors, (2123), 8 states have internal predecessors, (2123), 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 08:47:49,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:49,761 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 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 08:47:49,769 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 08:47:49,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:49,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:47:49,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:49,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1306613477, now seen corresponding path program 2 times [2023-01-28 08:47:49,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:49,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79391420] [2023-01-28 08:47:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:49,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-28 08:47:50,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:50,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79391420] [2023-01-28 08:47:50,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79391420] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:50,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850359253] [2023-01-28 08:47:50,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:47:50,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:50,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:50,210 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 08:47:50,212 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 08:47:50,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:47:50,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:50,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 08:47:50,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-28 08:47:50,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:47:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-01-28 08:47:50,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850359253] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:47:50,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:47:50,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-01-28 08:47:50,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519532442] [2023-01-28 08:47:50,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:47:50,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 08:47:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 08:47:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-01-28 08:47:50,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 676 [2023-01-28 08:47:50,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 198 flow. Second operand has 17 states, 17 states have (on average 263.5882352941176) internal successors, (4481), 17 states have internal predecessors, (4481), 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 08:47:50,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:50,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 676 [2023-01-28 08:47:50,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:50,929 INFO L130 PetriNetUnfolder]: 658/978 cut-off events. [2023-01-28 08:47:50,930 INFO L131 PetriNetUnfolder]: For 104/104 co-relation queries the response was YES. [2023-01-28 08:47:50,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158 conditions, 978 events. 658/978 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3195 event pairs, 477 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 2057. Up to 964 conditions per place. [2023-01-28 08:47:50,934 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 28 selfloop transitions, 18 changer transitions 0/46 dead transitions. [2023-01-28 08:47:50,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 308 flow [2023-01-28 08:47:50,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 08:47:50,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 08:47:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1875 transitions. [2023-01-28 08:47:50,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962383770076078 [2023-01-28 08:47:50,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1875 transitions. [2023-01-28 08:47:50,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1875 transitions. [2023-01-28 08:47:50,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:50,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1875 transitions. [2023-01-28 08:47:50,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 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 08:47:50,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 676.0) internal successors, (5408), 8 states have internal predecessors, (5408), 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 08:47:50,955 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 676.0) internal successors, (5408), 8 states have internal predecessors, (5408), 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 08:47:50,956 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 198 flow. Second operand 7 states and 1875 transitions. [2023-01-28 08:47:50,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 308 flow [2023-01-28 08:47:50,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 284 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-28 08:47:50,958 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 242 flow [2023-01-28 08:47:50,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-01-28 08:47:50,959 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-01-28 08:47:50,959 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 242 flow [2023-01-28 08:47:50,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 263.5882352941176) internal successors, (4481), 17 states have internal predecessors, (4481), 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 08:47:50,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:50,961 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:47:50,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:51,167 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,SelfDestructingSolverStorable3 [2023-01-28 08:47:51,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:47:51,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash 8528152, now seen corresponding path program 3 times [2023-01-28 08:47:51,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:51,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413733585] [2023-01-28 08:47:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:47:51,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:51,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413733585] [2023-01-28 08:47:51,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413733585] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:51,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274365239] [2023-01-28 08:47:51,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:47:51,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:51,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:51,582 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 08:47:51,588 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 08:47:51,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:47:51,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:51,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 08:47:51,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:47:51,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274365239] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:51,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:51,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:47:51,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984085902] [2023-01-28 08:47:51,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:51,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:47:51,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:51,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:47:51,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:51,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 676 [2023-01-28 08:47:51,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 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 08:47:51,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:51,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 676 [2023-01-28 08:47:51,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:52,291 INFO L130 PetriNetUnfolder]: 1407/2064 cut-off events. [2023-01-28 08:47:52,292 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2023-01-28 08:47:52,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 2064 events. 1407/2064 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8510 event pairs, 477 based on Foata normal form. 1/1561 useless extension candidates. Maximal degree in co-relation 4365. Up to 1015 conditions per place. [2023-01-28 08:47:52,300 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 76 selfloop transitions, 5 changer transitions 1/82 dead transitions. [2023-01-28 08:47:52,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 82 transitions, 499 flow [2023-01-28 08:47:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:47:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:47:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1141 transitions. [2023-01-28 08:47:52,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219674556213018 [2023-01-28 08:47:52,304 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1141 transitions. [2023-01-28 08:47:52,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1141 transitions. [2023-01-28 08:47:52,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:52,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1141 transitions. [2023-01-28 08:47:52,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 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 08:47:52,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 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 08:47:52,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 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 08:47:52,312 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 242 flow. Second operand 4 states and 1141 transitions. [2023-01-28 08:47:52,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 82 transitions, 499 flow [2023-01-28 08:47:52,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 463 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 08:47:52,314 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 239 flow [2023-01-28 08:47:52,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=47, PETRI_TRANSITIONS=50} [2023-01-28 08:47:52,315 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-01-28 08:47:52,315 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 239 flow [2023-01-28 08:47:52,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 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 08:47:52,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:52,316 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:47:52,327 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 08:47:52,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:52,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:47:52,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2105961796, now seen corresponding path program 4 times [2023-01-28 08:47:52,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:52,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737804910] [2023-01-28 08:47:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:52,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:47:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:52,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737804910] [2023-01-28 08:47:52,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737804910] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:52,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084747658] [2023-01-28 08:47:52,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:47:52,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:52,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:52,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:52,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 08:47:52,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:47:52,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:52,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 08:47:52,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:53,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:53,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084747658] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:53,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:53,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:47:53,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085006653] [2023-01-28 08:47:53,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:53,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 08:47:53,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 08:47:53,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 08:47:53,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 676 [2023-01-28 08:47:53,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 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 08:47:53,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:53,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 676 [2023-01-28 08:47:53,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:53,454 INFO L130 PetriNetUnfolder]: 2025/2955 cut-off events. [2023-01-28 08:47:53,454 INFO L131 PetriNetUnfolder]: For 1137/1137 co-relation queries the response was YES. [2023-01-28 08:47:53,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 2955 events. 2025/2955 cut-off events. For 1137/1137 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12771 event pairs, 820 based on Foata normal form. 1/2516 useless extension candidates. Maximal degree in co-relation 7299. Up to 1739 conditions per place. [2023-01-28 08:47:53,467 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 76 selfloop transitions, 7 changer transitions 1/84 dead transitions. [2023-01-28 08:47:53,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 84 transitions, 509 flow [2023-01-28 08:47:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 08:47:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 08:47:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2023-01-28 08:47:53,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42122781065088755 [2023-01-28 08:47:53,472 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2023-01-28 08:47:53,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2023-01-28 08:47:53,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:53,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2023-01-28 08:47:53,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 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 08:47:53,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 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 08:47:53,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 676.0) internal successors, (3380), 5 states have internal predecessors, (3380), 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 08:47:53,480 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 239 flow. Second operand 4 states and 1139 transitions. [2023-01-28 08:47:53,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 84 transitions, 509 flow [2023-01-28 08:47:53,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 84 transitions, 509 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 08:47:53,485 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 288 flow [2023-01-28 08:47:53,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-01-28 08:47:53,487 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-01-28 08:47:53,487 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 288 flow [2023-01-28 08:47:53,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 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 08:47:53,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:53,488 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:47:53,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:53,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:53,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:47:53,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:53,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1019027948, now seen corresponding path program 1 times [2023-01-28 08:47:53,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:53,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485300682] [2023-01-28 08:47:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:53,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:54,054 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:54,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485300682] [2023-01-28 08:47:54,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485300682] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910223836] [2023-01-28 08:47:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:54,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:54,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:54,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:54,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 08:47:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:54,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:47:54,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:54,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910223836] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:54,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:54,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:47:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078800996] [2023-01-28 08:47:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:54,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:47:54,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:47:54,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:47:54,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:47:54,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:54,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:54,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:47:54,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:54,728 INFO L130 PetriNetUnfolder]: 2197/3199 cut-off events. [2023-01-28 08:47:54,728 INFO L131 PetriNetUnfolder]: For 2563/2563 co-relation queries the response was YES. [2023-01-28 08:47:54,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9024 conditions, 3199 events. 2197/3199 cut-off events. For 2563/2563 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 14135 event pairs, 382 based on Foata normal form. 0/2743 useless extension candidates. Maximal degree in co-relation 8926. Up to 1217 conditions per place. [2023-01-28 08:47:54,745 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 88 selfloop transitions, 9 changer transitions 0/97 dead transitions. [2023-01-28 08:47:54,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 621 flow [2023-01-28 08:47:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:47:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:47:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1457 transitions. [2023-01-28 08:47:54,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43106508875739646 [2023-01-28 08:47:54,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1457 transitions. [2023-01-28 08:47:54,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1457 transitions. [2023-01-28 08:47:54,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:54,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1457 transitions. [2023-01-28 08:47:54,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 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 08:47:54,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:54,770 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:54,770 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 288 flow. Second operand 5 states and 1457 transitions. [2023-01-28 08:47:54,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 97 transitions, 621 flow [2023-01-28 08:47:54,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 97 transitions, 619 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 08:47:54,779 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 333 flow [2023-01-28 08:47:54,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-01-28 08:47:54,780 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-01-28 08:47:54,781 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 333 flow [2023-01-28 08:47:54,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:54,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:54,784 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:47:54,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:54,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:54,989 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 1 more)] === [2023-01-28 08:47:54,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash -673776660, now seen corresponding path program 2 times [2023-01-28 08:47:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:54,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392972050] [2023-01-28 08:47:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:54,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:55,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392972050] [2023-01-28 08:47:55,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392972050] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638471539] [2023-01-28 08:47:55,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:47:55,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:55,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:55,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:55,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 08:47:55,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:47:55,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:55,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:47:55,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:47:55,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:55,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638471539] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:55,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:55,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:47:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145258651] [2023-01-28 08:47:55,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:55,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:47:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:47:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:47:55,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:47:55,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:55,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:55,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:47:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:56,189 INFO L130 PetriNetUnfolder]: 2233/3281 cut-off events. [2023-01-28 08:47:56,189 INFO L131 PetriNetUnfolder]: For 5247/5247 co-relation queries the response was YES. [2023-01-28 08:47:56,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9962 conditions, 3281 events. 2233/3281 cut-off events. For 5247/5247 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15022 event pairs, 777 based on Foata normal form. 22/3083 useless extension candidates. Maximal degree in co-relation 9860. Up to 1558 conditions per place. [2023-01-28 08:47:56,208 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 78 selfloop transitions, 8 changer transitions 15/101 dead transitions. [2023-01-28 08:47:56,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 693 flow [2023-01-28 08:47:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:47:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:47:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1458 transitions. [2023-01-28 08:47:56,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43136094674556213 [2023-01-28 08:47:56,212 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1458 transitions. [2023-01-28 08:47:56,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1458 transitions. [2023-01-28 08:47:56,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:56,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1458 transitions. [2023-01-28 08:47:56,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 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 08:47:56,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:56,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:56,220 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 333 flow. Second operand 5 states and 1458 transitions. [2023-01-28 08:47:56,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 693 flow [2023-01-28 08:47:56,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 676 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 08:47:56,229 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 355 flow [2023-01-28 08:47:56,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-01-28 08:47:56,230 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2023-01-28 08:47:56,230 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 355 flow [2023-01-28 08:47:56,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:56,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:56,231 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:47:56,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:56,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:56,441 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 1 more)] === [2023-01-28 08:47:56,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1334638094, now seen corresponding path program 3 times [2023-01-28 08:47:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:56,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399078592] [2023-01-28 08:47:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:56,800 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:56,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399078592] [2023-01-28 08:47:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399078592] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261336347] [2023-01-28 08:47:56,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:47:56,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:56,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:56,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 08:47:57,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:47:57,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:47:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:57,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:47:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:57,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261336347] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:57,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:47:57,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-01-28 08:47:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473937278] [2023-01-28 08:47:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:47:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:47:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:47:57,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:47:57,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:57,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:57,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:47:57,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:57,762 INFO L130 PetriNetUnfolder]: 2319/3404 cut-off events. [2023-01-28 08:47:57,762 INFO L131 PetriNetUnfolder]: For 6348/6348 co-relation queries the response was YES. [2023-01-28 08:47:57,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 3404 events. 2319/3404 cut-off events. For 6348/6348 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15599 event pairs, 558 based on Foata normal form. 36/3212 useless extension candidates. Maximal degree in co-relation 10862. Up to 1211 conditions per place. [2023-01-28 08:47:57,778 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 96 selfloop transitions, 13 changer transitions 1/110 dead transitions. [2023-01-28 08:47:57,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 110 transitions, 773 flow [2023-01-28 08:47:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:47:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:47:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1465 transitions. [2023-01-28 08:47:57,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334319526627219 [2023-01-28 08:47:57,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1465 transitions. [2023-01-28 08:47:57,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1465 transitions. [2023-01-28 08:47:57,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:57,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1465 transitions. [2023-01-28 08:47:57,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 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 08:47:57,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:57,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:57,791 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 355 flow. Second operand 5 states and 1465 transitions. [2023-01-28 08:47:57,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 110 transitions, 773 flow [2023-01-28 08:47:57,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 760 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 08:47:57,801 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 423 flow [2023-01-28 08:47:57,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-01-28 08:47:57,802 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2023-01-28 08:47:57,802 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 423 flow [2023-01-28 08:47:57,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:57,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:57,803 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:47:57,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:58,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:58,008 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 1 more)] === [2023-01-28 08:47:58,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash -991347606, now seen corresponding path program 4 times [2023-01-28 08:47:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449954947] [2023-01-28 08:47:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:58,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449954947] [2023-01-28 08:47:58,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449954947] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:58,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231876146] [2023-01-28 08:47:58,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:47:58,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:58,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:58,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:58,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 08:47:58,442 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:47:58,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:47:58,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:47:58,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:47:58,493 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:58,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:47:58,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231876146] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:47:58,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:47:58,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:47:58,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734544702] [2023-01-28 08:47:58,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:47:58,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:47:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:47:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:47:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:47:58,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:47:58,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 423 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:58,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:47:58,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:47:58,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:47:59,020 INFO L130 PetriNetUnfolder]: 2239/3277 cut-off events. [2023-01-28 08:47:59,020 INFO L131 PetriNetUnfolder]: For 7915/7915 co-relation queries the response was YES. [2023-01-28 08:47:59,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11612 conditions, 3277 events. 2239/3277 cut-off events. For 7915/7915 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14785 event pairs, 749 based on Foata normal form. 22/3079 useless extension candidates. Maximal degree in co-relation 11505. Up to 1558 conditions per place. [2023-01-28 08:47:59,046 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 76 selfloop transitions, 11 changer transitions 13/100 dead transitions. [2023-01-28 08:47:59,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 743 flow [2023-01-28 08:47:59,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:47:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:47:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1458 transitions. [2023-01-28 08:47:59,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43136094674556213 [2023-01-28 08:47:59,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1458 transitions. [2023-01-28 08:47:59,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1458 transitions. [2023-01-28 08:47:59,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:47:59,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1458 transitions. [2023-01-28 08:47:59,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.6) internal successors, (1458), 5 states have internal predecessors, (1458), 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 08:47:59,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:59,057 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:47:59,057 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 423 flow. Second operand 5 states and 1458 transitions. [2023-01-28 08:47:59,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 743 flow [2023-01-28 08:47:59,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 743 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 08:47:59,071 INFO L231 Difference]: Finished difference. Result has 72 places, 62 transitions, 452 flow [2023-01-28 08:47:59,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=72, PETRI_TRANSITIONS=62} [2023-01-28 08:47:59,072 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2023-01-28 08:47:59,072 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 62 transitions, 452 flow [2023-01-28 08:47:59,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:47:59,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:47:59,073 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:47:59,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 08:47:59,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-01-28 08:47:59,279 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 1 more)] === [2023-01-28 08:47:59,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:47:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1221850100, now seen corresponding path program 5 times [2023-01-28 08:47:59,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:47:59,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480767173] [2023-01-28 08:47:59,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:47:59,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:47:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:47:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:47:59,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:47:59,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480767173] [2023-01-28 08:47:59,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480767173] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:47:59,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657259991] [2023-01-28 08:47:59,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:47:59,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:47:59,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:47:59,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:47:59,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 08:48:00,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 08:48:00,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:00,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:00,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:00,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:48:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657259991] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:48:00,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:48:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504686598] [2023-01-28 08:48:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:00,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:48:00,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:00,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 62 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:48:00,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:00,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:00,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:00,599 INFO L130 PetriNetUnfolder]: 2145/3137 cut-off events. [2023-01-28 08:48:00,599 INFO L131 PetriNetUnfolder]: For 10229/10229 co-relation queries the response was YES. [2023-01-28 08:48:00,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 3137 events. 2145/3137 cut-off events. For 10229/10229 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13883 event pairs, 922 based on Foata normal form. 22/2947 useless extension candidates. Maximal degree in co-relation 11531. Up to 2061 conditions per place. [2023-01-28 08:48:00,616 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 79 selfloop transitions, 9 changer transitions 13/101 dead transitions. [2023-01-28 08:48:00,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 787 flow [2023-01-28 08:48:00,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:48:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:48:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-01-28 08:48:00,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-01-28 08:48:00,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-01-28 08:48:00,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-01-28 08:48:00,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:00,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-01-28 08:48:00,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 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 08:48:00,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:00,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:00,629 INFO L175 Difference]: Start difference. First operand has 72 places, 62 transitions, 452 flow. Second operand 5 states and 1456 transitions. [2023-01-28 08:48:00,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 787 flow [2023-01-28 08:48:00,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 101 transitions, 759 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 08:48:00,650 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 449 flow [2023-01-28 08:48:00,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2023-01-28 08:48:00,650 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-01-28 08:48:00,650 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 449 flow [2023-01-28 08:48:00,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:48:00,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:00,651 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:00,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 08:48:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:00,864 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 1 more)] === [2023-01-28 08:48:00,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1105708102, now seen corresponding path program 6 times [2023-01-28 08:48:00,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:00,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907889581] [2023-01-28 08:48:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:00,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:01,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907889581] [2023-01-28 08:48:01,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907889581] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816539148] [2023-01-28 08:48:01,115 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:48:01,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:01,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:01,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:01,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 08:48:01,311 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 08:48:01,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:01,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:01,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:01,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:48:01,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816539148] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:01,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:48:01,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:48:01,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954627288] [2023-01-28 08:48:01,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:01,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:01,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:01,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:01,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:48:01,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:01,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:48:01,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:01,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:01,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:01,801 INFO L130 PetriNetUnfolder]: 2065/3000 cut-off events. [2023-01-28 08:48:01,801 INFO L131 PetriNetUnfolder]: For 9864/9864 co-relation queries the response was YES. [2023-01-28 08:48:01,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11300 conditions, 3000 events. 2065/3000 cut-off events. For 9864/9864 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12975 event pairs, 826 based on Foata normal form. 36/2832 useless extension candidates. Maximal degree in co-relation 11190. Up to 1798 conditions per place. [2023-01-28 08:48:01,815 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 97 selfloop transitions, 12 changer transitions 1/110 dead transitions. [2023-01-28 08:48:01,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 841 flow [2023-01-28 08:48:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:48:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:48:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1741 transitions. [2023-01-28 08:48:01,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292406311637081 [2023-01-28 08:48:01,819 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1741 transitions. [2023-01-28 08:48:01,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1741 transitions. [2023-01-28 08:48:01,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:01,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1741 transitions. [2023-01-28 08:48:01,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 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 08:48:01,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 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 08:48:01,827 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 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 08:48:01,827 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 449 flow. Second operand 6 states and 1741 transitions. [2023-01-28 08:48:01,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 841 flow [2023-01-28 08:48:01,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 813 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 08:48:01,848 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 475 flow [2023-01-28 08:48:01,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-01-28 08:48:01,850 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-01-28 08:48:01,850 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 475 flow [2023-01-28 08:48:01,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.6) internal successors, (1413), 5 states have internal predecessors, (1413), 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 08:48:01,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:01,851 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:01,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:02,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 08:48:02,056 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 1 more)] === [2023-01-28 08:48:02,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1050703873, now seen corresponding path program 1 times [2023-01-28 08:48:02,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:02,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772299712] [2023-01-28 08:48:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772299712] [2023-01-28 08:48:02,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772299712] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71807844] [2023-01-28 08:48:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:02,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:02,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:02,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:02,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 08:48:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:02,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:02,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:48:02,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:02,624 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:48:02,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71807844] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:02,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:48:02,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 10 [2023-01-28 08:48:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810069025] [2023-01-28 08:48:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:02,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-28 08:48:02,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:02,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 475 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:02,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:02,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:02,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:03,085 INFO L130 PetriNetUnfolder]: 2188/3163 cut-off events. [2023-01-28 08:48:03,086 INFO L131 PetriNetUnfolder]: For 9105/9105 co-relation queries the response was YES. [2023-01-28 08:48:03,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12221 conditions, 3163 events. 2188/3163 cut-off events. For 9105/9105 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14004 event pairs, 180 based on Foata normal form. 76/3027 useless extension candidates. Maximal degree in co-relation 12109. Up to 2033 conditions per place. [2023-01-28 08:48:03,101 INFO L137 encePairwiseOnDemand]: 669/676 looper letters, 93 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2023-01-28 08:48:03,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 857 flow [2023-01-28 08:48:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:48:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:48:03,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1454 transitions. [2023-01-28 08:48:03,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301775147928994 [2023-01-28 08:48:03,104 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1454 transitions. [2023-01-28 08:48:03,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1454 transitions. [2023-01-28 08:48:03,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:03,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1454 transitions. [2023-01-28 08:48:03,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.8) internal successors, (1454), 5 states have internal predecessors, (1454), 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 08:48:03,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:03,111 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:03,111 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 475 flow. Second operand 5 states and 1454 transitions. [2023-01-28 08:48:03,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 857 flow [2023-01-28 08:48:03,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 106 transitions, 790 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-01-28 08:48:03,134 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 499 flow [2023-01-28 08:48:03,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-01-28 08:48:03,135 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places. [2023-01-28 08:48:03,135 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 499 flow [2023-01-28 08:48:03,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:03,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:03,135 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:03,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 08:48:03,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 08:48:03,341 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:03,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:03,341 INFO L85 PathProgramCache]: Analyzing trace with hash 80380509, now seen corresponding path program 2 times [2023-01-28 08:48:03,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66285913] [2023-01-28 08:48:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:03,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:03,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66285913] [2023-01-28 08:48:03,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66285913] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:03,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357742596] [2023-01-28 08:48:03,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:48:03,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:03,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:03,587 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:03,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 08:48:03,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:48:03,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:03,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:03,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:03,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:48:03,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357742596] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:03,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:48:03,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:48:03,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755469554] [2023-01-28 08:48:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:03,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:03,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:48:03,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:03,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:03,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:03,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:03,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:04,485 INFO L130 PetriNetUnfolder]: 2170/3145 cut-off events. [2023-01-28 08:48:04,485 INFO L131 PetriNetUnfolder]: For 9206/9206 co-relation queries the response was YES. [2023-01-28 08:48:04,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12062 conditions, 3145 events. 2170/3145 cut-off events. For 9206/9206 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13915 event pairs, 752 based on Foata normal form. 18/2951 useless extension candidates. Maximal degree in co-relation 11951. Up to 1803 conditions per place. [2023-01-28 08:48:04,499 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 82 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2023-01-28 08:48:04,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 787 flow [2023-01-28 08:48:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:48:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:48:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1449 transitions. [2023-01-28 08:48:04,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428698224852071 [2023-01-28 08:48:04,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1449 transitions. [2023-01-28 08:48:04,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1449 transitions. [2023-01-28 08:48:04,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:04,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1449 transitions. [2023-01-28 08:48:04,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 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 08:48:04,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:04,509 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:04,510 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 499 flow. Second operand 5 states and 1449 transitions. [2023-01-28 08:48:04,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 787 flow [2023-01-28 08:48:04,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 768 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 08:48:04,530 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 535 flow [2023-01-28 08:48:04,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-01-28 08:48:04,531 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2023-01-28 08:48:04,531 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 535 flow [2023-01-28 08:48:04,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:04,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:04,531 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:04,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:04,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 08:48:04,737 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:04,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash 370126421, now seen corresponding path program 3 times [2023-01-28 08:48:04,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:04,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415569881] [2023-01-28 08:48:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:04,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415569881] [2023-01-28 08:48:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415569881] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766528092] [2023-01-28 08:48:04,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:48:04,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:04,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:04,981 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:04,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 08:48:05,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 08:48:05,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:05,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:05,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:05,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:48:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766528092] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:48:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:48:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365062971] [2023-01-28 08:48:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:05,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:05,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:48:05,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:05,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:05,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:05,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:05,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:05,799 INFO L130 PetriNetUnfolder]: 2260/3275 cut-off events. [2023-01-28 08:48:05,799 INFO L131 PetriNetUnfolder]: For 10263/10263 co-relation queries the response was YES. [2023-01-28 08:48:05,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13182 conditions, 3275 events. 2260/3275 cut-off events. For 10263/10263 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14490 event pairs, 770 based on Foata normal form. 76/3131 useless extension candidates. Maximal degree in co-relation 13070. Up to 1825 conditions per place. [2023-01-28 08:48:05,817 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 94 selfloop transitions, 16 changer transitions 1/111 dead transitions. [2023-01-28 08:48:05,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 894 flow [2023-01-28 08:48:05,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 08:48:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 08:48:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1741 transitions. [2023-01-28 08:48:05,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292406311637081 [2023-01-28 08:48:05,821 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1741 transitions. [2023-01-28 08:48:05,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1741 transitions. [2023-01-28 08:48:05,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:05,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1741 transitions. [2023-01-28 08:48:05,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 290.1666666666667) internal successors, (1741), 6 states have internal predecessors, (1741), 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 08:48:05,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 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 08:48:05,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 676.0) internal successors, (4732), 7 states have internal predecessors, (4732), 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 08:48:05,830 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 535 flow. Second operand 6 states and 1741 transitions. [2023-01-28 08:48:05,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 894 flow [2023-01-28 08:48:05,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 111 transitions, 862 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 08:48:05,857 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 544 flow [2023-01-28 08:48:05,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=544, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-01-28 08:48:05,858 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-01-28 08:48:05,858 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 544 flow [2023-01-28 08:48:05,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:05,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:05,859 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:05,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:06,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 08:48:06,065 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:06,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:06,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1112195801, now seen corresponding path program 4 times [2023-01-28 08:48:06,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:06,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484731307] [2023-01-28 08:48:06,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:06,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484731307] [2023-01-28 08:48:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484731307] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270747663] [2023-01-28 08:48:06,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:48:06,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:06,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:06,355 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:06,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 08:48:06,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:48:06,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:06,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:06,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:06,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:48:06,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270747663] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:06,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:48:06,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:48:06,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638736478] [2023-01-28 08:48:06,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:06,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:06,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:06,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:48:06,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:06,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:06,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:06,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:06,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:07,079 INFO L130 PetriNetUnfolder]: 2242/3257 cut-off events. [2023-01-28 08:48:07,079 INFO L131 PetriNetUnfolder]: For 12776/12776 co-relation queries the response was YES. [2023-01-28 08:48:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13563 conditions, 3257 events. 2242/3257 cut-off events. For 12776/12776 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14440 event pairs, 847 based on Foata normal form. 18/3055 useless extension candidates. Maximal degree in co-relation 13450. Up to 2087 conditions per place. [2023-01-28 08:48:07,096 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 87 selfloop transitions, 13 changer transitions 9/109 dead transitions. [2023-01-28 08:48:07,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 109 transitions, 924 flow [2023-01-28 08:48:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:48:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:48:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2023-01-28 08:48:07,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298816568047337 [2023-01-28 08:48:07,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2023-01-28 08:48:07,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2023-01-28 08:48:07,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:07,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2023-01-28 08:48:07,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 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 08:48:07,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:07,107 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:07,107 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 544 flow. Second operand 5 states and 1453 transitions. [2023-01-28 08:48:07,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 109 transitions, 924 flow [2023-01-28 08:48:07,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 877 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 08:48:07,138 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 555 flow [2023-01-28 08:48:07,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=555, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2023-01-28 08:48:07,139 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 47 predicate places. [2023-01-28 08:48:07,139 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 555 flow [2023-01-28 08:48:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:07,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:07,140 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:07,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:07,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:07,346 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:07,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash -293042749, now seen corresponding path program 5 times [2023-01-28 08:48:07,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158058982] [2023-01-28 08:48:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:07,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:07,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:07,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158058982] [2023-01-28 08:48:07,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158058982] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:07,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321558911] [2023-01-28 08:48:07,605 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:48:07,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:07,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:07,606 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:07,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 08:48:07,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 08:48:07,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:07,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:07,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:07,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:08,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321558911] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:08,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 08:48:08,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 5] total 11 [2023-01-28 08:48:08,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426749141] [2023-01-28 08:48:08,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:08,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:08,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:08,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:08,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 08:48:08,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:08,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:08,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:08,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:08,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:08,466 INFO L130 PetriNetUnfolder]: 2141/3138 cut-off events. [2023-01-28 08:48:08,466 INFO L131 PetriNetUnfolder]: For 13140/13140 co-relation queries the response was YES. [2023-01-28 08:48:08,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13278 conditions, 3138 events. 2141/3138 cut-off events. For 13140/13140 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13910 event pairs, 847 based on Foata normal form. 76/2998 useless extension candidates. Maximal degree in co-relation 13164. Up to 2087 conditions per place. [2023-01-28 08:48:08,478 INFO L137 encePairwiseOnDemand]: 671/676 looper letters, 92 selfloop transitions, 15 changer transitions 1/108 dead transitions. [2023-01-28 08:48:08,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 913 flow [2023-01-28 08:48:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:48:08,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:48:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2023-01-28 08:48:08,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-01-28 08:48:08,481 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2023-01-28 08:48:08,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2023-01-28 08:48:08,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:08,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2023-01-28 08:48:08,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 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 08:48:08,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:08,487 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:08,487 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 555 flow. Second operand 5 states and 1456 transitions. [2023-01-28 08:48:08,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 108 transitions, 913 flow [2023-01-28 08:48:08,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 884 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 08:48:08,518 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 577 flow [2023-01-28 08:48:08,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=577, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-01-28 08:48:08,519 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 49 predicate places. [2023-01-28 08:48:08,519 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 577 flow [2023-01-28 08:48:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:08,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:08,520 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:08,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 08:48:08,726 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:08,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2055287147, now seen corresponding path program 6 times [2023-01-28 08:48:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595849489] [2023-01-28 08:48:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:08,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:08,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:08,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595849489] [2023-01-28 08:48:08,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595849489] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:08,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758262696] [2023-01-28 08:48:08,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 08:48:08,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:08,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:08,953 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:08,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 08:48:09,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 08:48:09,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:09,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 08:48:09,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:09,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 08:48:09,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758262696] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 08:48:09,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 08:48:09,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-01-28 08:48:09,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174361180] [2023-01-28 08:48:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 08:48:09,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 08:48:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 08:48:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-01-28 08:48:09,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 676 [2023-01-28 08:48:09,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:09,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:09,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 676 [2023-01-28 08:48:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:09,760 INFO L130 PetriNetUnfolder]: 2023/2941 cut-off events. [2023-01-28 08:48:09,760 INFO L131 PetriNetUnfolder]: For 10935/10935 co-relation queries the response was YES. [2023-01-28 08:48:09,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12167 conditions, 2941 events. 2023/2941 cut-off events. For 10935/10935 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12653 event pairs, 847 based on Foata normal form. 18/2759 useless extension candidates. Maximal degree in co-relation 12053. Up to 2087 conditions per place. [2023-01-28 08:48:09,776 INFO L137 encePairwiseOnDemand]: 670/676 looper letters, 76 selfloop transitions, 15 changer transitions 10/101 dead transitions. [2023-01-28 08:48:09,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 101 transitions, 881 flow [2023-01-28 08:48:09,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 08:48:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 08:48:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1449 transitions. [2023-01-28 08:48:09,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428698224852071 [2023-01-28 08:48:09,780 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1449 transitions. [2023-01-28 08:48:09,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1449 transitions. [2023-01-28 08:48:09,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:09,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1449 transitions. [2023-01-28 08:48:09,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 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 08:48:09,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:09,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 676.0) internal successors, (4056), 6 states have internal predecessors, (4056), 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 08:48:09,785 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 577 flow. Second operand 5 states and 1449 transitions. [2023-01-28 08:48:09,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 101 transitions, 881 flow [2023-01-28 08:48:09,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 859 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 08:48:09,809 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 573 flow [2023-01-28 08:48:09,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=573, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2023-01-28 08:48:09,809 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 52 predicate places. [2023-01-28 08:48:09,809 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 573 flow [2023-01-28 08:48:09,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 282.8) internal successors, (1414), 5 states have internal predecessors, (1414), 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 08:48:09,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:09,810 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 08:48:09,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:10,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 08:48:10,017 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:10,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1707227891, now seen corresponding path program 1 times [2023-01-28 08:48:10,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:10,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348103515] [2023-01-28 08:48:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:10,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-01-28 08:48:10,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348103515] [2023-01-28 08:48:10,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348103515] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85536616] [2023-01-28 08:48:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:10,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:10,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:10,270 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:10,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 08:48:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:10,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 82 conjunts are in the unsatisfiable core [2023-01-28 08:48:10,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:48:10,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 08:48:11,053 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:48:11,054 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 40 treesize of output 40 [2023-01-28 08:48:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:48:11,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:13,454 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (.cse3 (< |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (and (or (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse1 (select (select .cse0 ~o_4~0.base) c_~o_4~0.offset)) (.cse2 (select (select .cse0 c_~o_0~0.base) c_~o_0~0.offset))) (or (<= (select (select .cse0 ~o_2~0.base) c_~o_2~0.offset) .cse1) (< .cse2 .cse1) (< .cse1 .cse2))))) .cse3) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse6 (select (select .cse7 ~o_4~0.base) c_~o_4~0.offset)) (.cse8 (select (select .cse7 c_~o_0~0.base) c_~o_0~0.offset))) (or (forall ((~o_2~0.base Int)) (let ((.cse4 (select .cse7 ~o_2~0.base))) (or (not (= (select .cse4 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (<= (select .cse4 c_~o_2~0.offset) .cse6)))) (< .cse8 .cse6) (< .cse6 .cse8))))) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse10 (select (select .cse11 ~o_4~0.base) c_~o_4~0.offset))) (or (forall ((~o_2~0.base Int)) (let ((.cse9 (select .cse11 ~o_2~0.base))) (or (not (= (select .cse9 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (< .cse10 (select .cse9 c_~o_2~0.offset))))) (<= (select (select .cse11 c_~o_0~0.base) c_~o_0~0.offset) .cse10))))) (or .cse3 (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse13 (select (select .cse12 ~o_4~0.base) c_~o_4~0.offset))) (or (<= (select (select .cse12 c_~o_0~0.base) c_~o_0~0.offset) .cse13) (< .cse13 (select (select .cse12 ~o_2~0.base) c_~o_2~0.offset))))))) (or (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse14 (select (select .cse15 ~o_4~0.base) c_~o_4~0.offset))) (or (<= .cse14 (select (select .cse15 c_~o_0~0.base) c_~o_0~0.offset)) (< (select (select .cse15 ~o_2~0.base) c_~o_2~0.offset) .cse14))))) .cse3) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse16 (select (select .cse17 ~o_4~0.base) c_~o_4~0.offset))) (or (<= .cse16 (select (select .cse17 c_~o_0~0.base) c_~o_0~0.offset)) (forall ((~o_2~0.base Int)) (let ((.cse18 (select .cse17 ~o_2~0.base))) (or (not (= (select .cse18 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (< (select .cse18 c_~o_2~0.offset) .cse16)))))))) (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse20 (select (select .cse21 ~o_4~0.base) c_~o_4~0.offset)) (.cse22 (select (select .cse21 c_~o_0~0.base) c_~o_0~0.offset))) (or (forall ((~o_2~0.base Int)) (let ((.cse19 (select .cse21 ~o_2~0.base))) (or (not (= (select .cse19 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (<= .cse20 (select .cse19 c_~o_2~0.offset))))) (< .cse22 .cse20) (< .cse20 .cse22))))) (or (forall ((~o_4~0.base Int) (v_ArrVal_1831 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1831))) (let ((.cse23 (select (select .cse24 ~o_4~0.base) c_~o_4~0.offset)) (.cse25 (select (select .cse24 c_~o_0~0.base) c_~o_0~0.offset))) (or (<= .cse23 (select (select .cse24 ~o_2~0.base) c_~o_2~0.offset)) (< .cse25 .cse23) (< .cse23 .cse25))))) .cse3))) is different from false [2023-01-28 08:48:13,613 INFO L321 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-01-28 08:48:13,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 244 treesize of output 273 [2023-01-28 08:48:13,671 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:48:13,672 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 172 treesize of output 198 [2023-01-28 08:48:17,434 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 08:48:17,440 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-28 08:48:17,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 1 [2023-01-28 08:48:17,443 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 08:48:17,447 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-28 08:48:17,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 1 [2023-01-28 08:48:17,450 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 08:48:17,457 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-28 08:48:17,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 1 [2023-01-28 08:48:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:48:17,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85536616] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:17,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:17,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 16, 14] total 34 [2023-01-28 08:48:17,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125608902] [2023-01-28 08:48:17,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:17,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 08:48:17,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:17,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 08:48:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1005, Unknown=1, NotChecked=64, Total=1190 [2023-01-28 08:48:17,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 676 [2023-01-28 08:48:17,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 573 flow. Second operand has 35 states, 35 states have (on average 223.57142857142858) internal successors, (7825), 35 states have internal predecessors, (7825), 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 08:48:17,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:17,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 676 [2023-01-28 08:48:17,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:21,117 INFO L130 PetriNetUnfolder]: 3918/5639 cut-off events. [2023-01-28 08:48:21,117 INFO L131 PetriNetUnfolder]: For 25606/25606 co-relation queries the response was YES. [2023-01-28 08:48:21,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23438 conditions, 5639 events. 3918/5639 cut-off events. For 25606/25606 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 27801 event pairs, 749 based on Foata normal form. 2/5273 useless extension candidates. Maximal degree in co-relation 23323. Up to 1655 conditions per place. [2023-01-28 08:48:21,137 INFO L137 encePairwiseOnDemand]: 660/676 looper letters, 219 selfloop transitions, 55 changer transitions 114/388 dead transitions. [2023-01-28 08:48:21,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 388 transitions, 4182 flow [2023-01-28 08:48:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 08:48:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 08:48:21,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5063 transitions. [2023-01-28 08:48:21,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34043840774610007 [2023-01-28 08:48:21,145 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5063 transitions. [2023-01-28 08:48:21,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5063 transitions. [2023-01-28 08:48:21,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:21,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5063 transitions. [2023-01-28 08:48:21,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 230.13636363636363) internal successors, (5063), 22 states have internal predecessors, (5063), 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 08:48:21,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 676.0) internal successors, (15548), 23 states have internal predecessors, (15548), 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 08:48:21,165 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 676.0) internal successors, (15548), 23 states have internal predecessors, (15548), 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 08:48:21,165 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 573 flow. Second operand 22 states and 5063 transitions. [2023-01-28 08:48:21,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 388 transitions, 4182 flow [2023-01-28 08:48:21,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 388 transitions, 3752 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-01-28 08:48:21,201 INFO L231 Difference]: Finished difference. Result has 115 places, 121 transitions, 1297 flow [2023-01-28 08:48:21,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1297, PETRI_PLACES=115, PETRI_TRANSITIONS=121} [2023-01-28 08:48:21,202 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 81 predicate places. [2023-01-28 08:48:21,202 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 121 transitions, 1297 flow [2023-01-28 08:48:21,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 223.57142857142858) internal successors, (7825), 35 states have internal predecessors, (7825), 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 08:48:21,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:21,203 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 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 08:48:21,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:21,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:21,410 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:21,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:21,410 INFO L85 PathProgramCache]: Analyzing trace with hash 361103584, now seen corresponding path program 2 times [2023-01-28 08:48:21,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375586665] [2023-01-28 08:48:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 08:48:21,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375586665] [2023-01-28 08:48:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375586665] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843158639] [2023-01-28 08:48:21,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 08:48:21,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:21,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:21,694 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:21,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 08:48:21,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 08:48:21,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:21,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 36 conjunts are in the unsatisfiable core [2023-01-28 08:48:21,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:48:22,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 08:48:23,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843158639] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:23,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:23,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 10] total 24 [2023-01-28 08:48:23,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882678089] [2023-01-28 08:48:23,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:23,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 08:48:23,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 08:48:23,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-01-28 08:48:23,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 676 [2023-01-28 08:48:23,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 1297 flow. Second operand has 25 states, 25 states have (on average 256.08) internal successors, (6402), 25 states have internal predecessors, (6402), 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 08:48:23,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:23,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 676 [2023-01-28 08:48:23,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:48:27,220 INFO L130 PetriNetUnfolder]: 9070/13068 cut-off events. [2023-01-28 08:48:27,220 INFO L131 PetriNetUnfolder]: For 124535/124535 co-relation queries the response was YES. [2023-01-28 08:48:27,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75424 conditions, 13068 events. 9070/13068 cut-off events. For 124535/124535 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 70112 event pairs, 731 based on Foata normal form. 9/13077 useless extension candidates. Maximal degree in co-relation 75374. Up to 3195 conditions per place. [2023-01-28 08:48:27,279 INFO L137 encePairwiseOnDemand]: 661/676 looper letters, 325 selfloop transitions, 267 changer transitions 369/961 dead transitions. [2023-01-28 08:48:27,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 961 transitions, 12493 flow [2023-01-28 08:48:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-01-28 08:48:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-01-28 08:48:27,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 13413 transitions. [2023-01-28 08:48:27,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890532544378698 [2023-01-28 08:48:27,290 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 13413 transitions. [2023-01-28 08:48:27,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 13413 transitions. [2023-01-28 08:48:27,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:48:27,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 13413 transitions. [2023-01-28 08:48:27,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 263.0) internal successors, (13413), 51 states have internal predecessors, (13413), 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 08:48:27,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 676.0) internal successors, (35152), 52 states have internal predecessors, (35152), 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 08:48:27,331 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 676.0) internal successors, (35152), 52 states have internal predecessors, (35152), 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 08:48:27,331 INFO L175 Difference]: Start difference. First operand has 115 places, 121 transitions, 1297 flow. Second operand 51 states and 13413 transitions. [2023-01-28 08:48:27,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 961 transitions, 12493 flow [2023-01-28 08:48:27,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 961 transitions, 11350 flow, removed 559 selfloop flow, removed 8 redundant places. [2023-01-28 08:48:27,711 INFO L231 Difference]: Finished difference. Result has 192 places, 388 transitions, 5981 flow [2023-01-28 08:48:27,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5981, PETRI_PLACES=192, PETRI_TRANSITIONS=388} [2023-01-28 08:48:27,712 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 158 predicate places. [2023-01-28 08:48:27,712 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 388 transitions, 5981 flow [2023-01-28 08:48:27,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 256.08) internal successors, (6402), 25 states have internal predecessors, (6402), 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 08:48:27,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:48:27,713 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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 08:48:27,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 08:48:27,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:27,921 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:48:27,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:48:27,921 INFO L85 PathProgramCache]: Analyzing trace with hash -489564831, now seen corresponding path program 3 times [2023-01-28 08:48:27,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:48:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309069089] [2023-01-28 08:48:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:48:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:48:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:48:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-01-28 08:48:30,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:48:30,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309069089] [2023-01-28 08:48:30,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309069089] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:48:30,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736388082] [2023-01-28 08:48:30,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 08:48:30,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:48:30,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:48:30,594 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:48:30,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 08:48:31,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-01-28 08:48:31,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:48:31,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 85 conjunts are in the unsatisfiable core [2023-01-28 08:48:31,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:48:31,943 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-28 08:48:31,944 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 38 treesize of output 22 [2023-01-28 08:48:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-01-28 08:48:32,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:48:33,794 INFO L321 Elim1Store]: treesize reduction 19, result has 90.7 percent of original size [2023-01-28 08:48:33,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 199 [2023-01-28 08:48:37,285 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-28 08:48:37,285 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 57 treesize of output 1 [2023-01-28 08:48:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-01-28 08:48:37,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736388082] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:48:37,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:48:37,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 14] total 39 [2023-01-28 08:48:37,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684619003] [2023-01-28 08:48:37,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:48:37,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 08:48:37,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:48:37,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 08:48:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2023-01-28 08:48:37,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 676 [2023-01-28 08:48:37,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 388 transitions, 5981 flow. Second operand has 40 states, 40 states have (on average 225.075) internal successors, (9003), 40 states have internal predecessors, (9003), 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 08:48:37,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:48:37,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 676 [2023-01-28 08:48:37,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:04,376 INFO L130 PetriNetUnfolder]: 15096/21763 cut-off events. [2023-01-28 08:49:04,376 INFO L131 PetriNetUnfolder]: For 437570/437570 co-relation queries the response was YES. [2023-01-28 08:49:04,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169243 conditions, 21763 events. 15096/21763 cut-off events. For 437570/437570 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 124707 event pairs, 1042 based on Foata normal form. 45/21808 useless extension candidates. Maximal degree in co-relation 169103. Up to 6203 conditions per place. [2023-01-28 08:49:04,547 INFO L137 encePairwiseOnDemand]: 658/676 looper letters, 648 selfloop transitions, 844 changer transitions 253/1745 dead transitions. [2023-01-28 08:49:04,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1745 transitions, 27640 flow [2023-01-28 08:49:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-01-28 08:49:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-01-28 08:49:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 21489 transitions. [2023-01-28 08:49:04,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34181141439205953 [2023-01-28 08:49:04,572 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 21489 transitions. [2023-01-28 08:49:04,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 21489 transitions. [2023-01-28 08:49:04,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:04,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 21489 transitions. [2023-01-28 08:49:04,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 231.06451612903226) internal successors, (21489), 93 states have internal predecessors, (21489), 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 08:49:04,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 676.0) internal successors, (63544), 94 states have internal predecessors, (63544), 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 08:49:04,643 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 676.0) internal successors, (63544), 94 states have internal predecessors, (63544), 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 08:49:04,643 INFO L175 Difference]: Start difference. First operand has 192 places, 388 transitions, 5981 flow. Second operand 93 states and 21489 transitions. [2023-01-28 08:49:04,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 1745 transitions, 27640 flow [2023-01-28 08:49:08,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 1745 transitions, 24299 flow, removed 1665 selfloop flow, removed 24 redundant places. [2023-01-28 08:49:08,601 INFO L231 Difference]: Finished difference. Result has 285 places, 1104 transitions, 17571 flow [2023-01-28 08:49:08,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=5536, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=17571, PETRI_PLACES=285, PETRI_TRANSITIONS=1104} [2023-01-28 08:49:08,602 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 251 predicate places. [2023-01-28 08:49:08,602 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 1104 transitions, 17571 flow [2023-01-28 08:49:08,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 225.075) internal successors, (9003), 40 states have internal predecessors, (9003), 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 08:49:08,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:08,603 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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 08:49:08,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:08,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:08,804 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:49:08,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash -541040723, now seen corresponding path program 4 times [2023-01-28 08:49:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:08,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681542046] [2023-01-28 08:49:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:08,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:49:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-01-28 08:49:12,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:49:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681542046] [2023-01-28 08:49:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681542046] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:49:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084270325] [2023-01-28 08:49:12,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 08:49:12,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:49:12,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:49:12,009 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:49:12,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 08:49:12,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 08:49:12,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:49:12,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 84 conjunts are in the unsatisfiable core [2023-01-28 08:49:12,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:49:12,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 08:49:12,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 08:49:12,902 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 08:49:12,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-01-28 08:49:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-01-28 08:49:12,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:49:14,168 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse5 (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))) (and (forall ((v_ArrVal_2156 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2156))) (let ((.cse4 (select .cse3 ~o_2~0.base))) (or (forall ((~o_4~0.base Int)) (let ((.cse0 (select .cse4 c_~o_2~0.offset)) (.cse1 (select (select .cse3 ~o_4~0.base) c_~o_4~0.offset)) (.cse2 (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset))) (or (= .cse0 .cse1) (= .cse2 .cse1) (< .cse0 .cse1) (< .cse1 .cse2)))) (not (= (select .cse4 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)))))) (forall ((v_ArrVal_2156 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_2156))) (let ((.cse6 (select .cse9 ~o_2~0.base))) (or (not (= (select .cse6 .cse5) |c_thread1Thread1of1ForFork2_#t~mem1#1|)) (forall ((~o_4~0.base Int)) (let ((.cse7 (select .cse6 c_~o_2~0.offset)) (.cse8 (select (select .cse9 ~o_4~0.base) c_~o_4~0.offset))) (or (= .cse7 .cse8) (< .cse8 .cse7) (<= (select (select .cse9 c_~o_0~0.base) c_~o_0~0.offset) .cse8)))))))))) is different from false [2023-01-28 08:49:14,314 INFO L321 Elim1Store]: treesize reduction 23, result has 81.0 percent of original size [2023-01-28 08:49:14,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 244 treesize of output 269 [2023-01-28 08:49:14,347 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 08:49:14,347 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 172 treesize of output 198 [2023-01-28 08:49:18,449 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 08:49:18,453 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-28 08:49:18,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 1 [2023-01-28 08:49:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-01-28 08:49:18,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084270325] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:49:18,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:49:18,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 14] total 48 [2023-01-28 08:49:18,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118253098] [2023-01-28 08:49:18,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:49:18,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-01-28 08:49:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:49:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-01-28 08:49:18,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2173, Unknown=1, NotChecked=94, Total=2450 [2023-01-28 08:49:18,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 676 [2023-01-28 08:49:18,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1104 transitions, 17571 flow. Second operand has 50 states, 50 states have (on average 200.02) internal successors, (10001), 50 states have internal predecessors, (10001), 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 08:49:18,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:49:18,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 676 [2023-01-28 08:49:18,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:49:38,732 INFO L130 PetriNetUnfolder]: 23286/33325 cut-off events. [2023-01-28 08:49:38,732 INFO L131 PetriNetUnfolder]: For 1557338/1557338 co-relation queries the response was YES. [2023-01-28 08:49:39,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342277 conditions, 33325 events. 23286/33325 cut-off events. For 1557338/1557338 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 200788 event pairs, 1080 based on Foata normal form. 24/33349 useless extension candidates. Maximal degree in co-relation 342080. Up to 9262 conditions per place. [2023-01-28 08:49:39,475 INFO L137 encePairwiseOnDemand]: 655/676 looper letters, 1351 selfloop transitions, 1097 changer transitions 141/2589 dead transitions. [2023-01-28 08:49:39,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 2589 transitions, 48666 flow [2023-01-28 08:49:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-01-28 08:49:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-01-28 08:49:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 11553 transitions. [2023-01-28 08:49:39,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3051827979712595 [2023-01-28 08:49:39,488 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 11553 transitions. [2023-01-28 08:49:39,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 11553 transitions. [2023-01-28 08:49:39,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:49:39,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 11553 transitions. [2023-01-28 08:49:39,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 206.30357142857142) internal successors, (11553), 56 states have internal predecessors, (11553), 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 08:49:39,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 676.0) internal successors, (38532), 57 states have internal predecessors, (38532), 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 08:49:39,536 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 676.0) internal successors, (38532), 57 states have internal predecessors, (38532), 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 08:49:39,537 INFO L175 Difference]: Start difference. First operand has 285 places, 1104 transitions, 17571 flow. Second operand 56 states and 11553 transitions. [2023-01-28 08:49:39,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 2589 transitions, 48666 flow [2023-01-28 08:49:57,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 2589 transitions, 45133 flow, removed 1696 selfloop flow, removed 10 redundant places. [2023-01-28 08:49:57,610 INFO L231 Difference]: Finished difference. Result has 353 places, 1657 transitions, 29562 flow [2023-01-28 08:49:57,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=676, PETRI_DIFFERENCE_MINUEND_FLOW=15470, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=556, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=29562, PETRI_PLACES=353, PETRI_TRANSITIONS=1657} [2023-01-28 08:49:57,611 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 319 predicate places. [2023-01-28 08:49:57,612 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 1657 transitions, 29562 flow [2023-01-28 08:49:57,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 200.02) internal successors, (10001), 50 states have internal predecessors, (10001), 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 08:49:57,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 08:49:57,613 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 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 08:49:57,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 08:49:57,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-01-28 08:49:57,814 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 08:49:57,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 08:49:57,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1981758789, now seen corresponding path program 5 times [2023-01-28 08:49:57,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 08:49:57,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698746537] [2023-01-28 08:49:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 08:49:57,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 08:49:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 08:50:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-01-28 08:50:01,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 08:50:01,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698746537] [2023-01-28 08:50:01,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698746537] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 08:50:01,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768909036] [2023-01-28 08:50:01,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 08:50:01,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 08:50:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 08:50:01,553 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 08:50:01,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 08:50:02,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-01-28 08:50:02,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 08:50:02,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 80 conjunts are in the unsatisfiable core [2023-01-28 08:50:02,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 08:50:02,529 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 08:50:02,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-01-28 08:50:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-28 08:50:02,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 08:50:04,076 INFO L321 Elim1Store]: treesize reduction 36, result has 70.2 percent of original size [2023-01-28 08:50:04,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 98 [2023-01-28 08:50:04,186 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-01-28 08:50:04,186 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 57 treesize of output 1 [2023-01-28 08:50:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-28 08:50:04,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768909036] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 08:50:04,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 08:50:04,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 12] total 51 [2023-01-28 08:50:04,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847617883] [2023-01-28 08:50:04,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 08:50:04,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-01-28 08:50:04,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 08:50:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-01-28 08:50:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2429, Unknown=0, NotChecked=0, Total=2652 [2023-01-28 08:50:04,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 676 [2023-01-28 08:50:04,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 1657 transitions, 29562 flow. Second operand has 52 states, 52 states have (on average 190.90384615384616) internal successors, (9927), 52 states have internal predecessors, (9927), 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 08:50:04,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 08:50:04,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 676 [2023-01-28 08:50:04,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 08:52:07,259 INFO L130 PetriNetUnfolder]: 155389/221984 cut-off events. [2023-01-28 08:52:07,259 INFO L131 PetriNetUnfolder]: For 12561849/12561849 co-relation queries the response was YES. [2023-01-28 08:52:11,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448562 conditions, 221984 events. 155389/221984 cut-off events. For 12561849/12561849 co-relation queries the response was YES. Maximal size of possible extension queue 5366. Compared 1680300 event pairs, 11732 based on Foata normal form. 88/222072 useless extension candidates. Maximal degree in co-relation 2448327. Up to 60896 conditions per place. [2023-01-28 08:52:13,163 INFO L137 encePairwiseOnDemand]: 656/676 looper letters, 6731 selfloop transitions, 8345 changer transitions 236/15312 dead transitions. [2023-01-28 08:52:13,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 15312 transitions, 320909 flow [2023-01-28 08:52:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2023-01-28 08:52:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2023-01-28 08:52:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 41028 transitions. [2023-01-28 08:52:13,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29178994082840237 [2023-01-28 08:52:13,204 INFO L72 ComplementDD]: Start complementDD. Operand 208 states and 41028 transitions. [2023-01-28 08:52:13,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 41028 transitions. [2023-01-28 08:52:13,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 08:52:13,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 208 states and 41028 transitions. [2023-01-28 08:52:13,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 209 states, 208 states have (on average 197.25) internal successors, (41028), 208 states have internal predecessors, (41028), 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 08:52:13,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 209 states, 209 states have (on average 676.0) internal successors, (141284), 209 states have internal predecessors, (141284), 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 08:52:13,359 INFO L81 ComplementDD]: Finished complementDD. Result has 209 states, 209 states have (on average 676.0) internal successors, (141284), 209 states have internal predecessors, (141284), 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 08:52:13,359 INFO L175 Difference]: Start difference. First operand has 353 places, 1657 transitions, 29562 flow. Second operand 208 states and 41028 transitions. [2023-01-28 08:52:13,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 15312 transitions, 320909 flow Received shutdown request... [2023-01-28 09:00:59,918 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 09:00:59,918 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:01:00,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 09:01:00,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 09:01:01,162 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 09:01:01,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 09:01:01,162 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 09:01:01,163 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 09:01:01,163 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 09:01:01,163 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 09:01:01,164 INFO L445 BasicCegarLoop]: Path program histogram: [6, 6, 5, 4, 1, 1] [2023-01-28 09:01:01,166 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:01:01,166 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:01:01,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:01:01 BasicIcfg [2023-01-28 09:01:01,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:01:01,168 INFO L158 Benchmark]: Toolchain (without parser) took 802247.39ms. Allocated memory was 367.0MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 313.7MB in the beginning and 3.3GB in the end (delta: -2.9GB). Peak memory consumption was 13.8GB. Max. memory is 16.0GB. [2023-01-28 09:01:01,168 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:01:01,168 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.35ms. Allocated memory is still 367.0MB. Free memory was 313.4MB in the beginning and 301.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:01:01,169 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.01ms. Allocated memory is still 367.0MB. Free memory was 301.5MB in the beginning and 344.3MB in the end (delta: -42.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. [2023-01-28 09:01:01,169 INFO L158 Benchmark]: Boogie Preprocessor took 30.70ms. Allocated memory is still 367.0MB. Free memory was 344.3MB in the beginning and 342.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:01:01,169 INFO L158 Benchmark]: RCFGBuilder took 613.89ms. Allocated memory is still 367.0MB. Free memory was 342.0MB in the beginning and 316.2MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 09:01:01,169 INFO L158 Benchmark]: TraceAbstraction took 801307.80ms. Allocated memory was 367.0MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 315.3MB in the beginning and 3.3GB in the end (delta: -2.9GB). Peak memory consumption was 13.8GB. Max. memory is 16.0GB. [2023-01-28 09:01:01,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 230.35ms. Allocated memory is still 367.0MB. Free memory was 313.4MB in the beginning and 301.5MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.01ms. Allocated memory is still 367.0MB. Free memory was 301.5MB in the beginning and 344.3MB in the end (delta: -42.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.70ms. Allocated memory is still 367.0MB. Free memory was 344.3MB in the beginning and 342.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 613.89ms. Allocated memory is still 367.0MB. Free memory was 342.0MB in the beginning and 316.2MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 801307.80ms. Allocated memory was 367.0MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 315.3MB in the beginning and 3.3GB in the end (delta: -2.9GB). Peak memory consumption was 13.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 292 PlacesBefore, 34 PlacesAfterwards, 311 TransitionsBefore, 31 TransitionsAfterwards, 15390 CoEnabledTransitionPairs, 7 FixpointIterations, 133 TrivialSequentialCompositions, 123 ConcurrentSequentialCompositions, 36 TrivialYvCompositions, 38 ConcurrentYvCompositions, 22 ChoiceCompositions, 352 TotalNumberOfCompositions, 14156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13481, independent: 13431, independent conditional: 0, independent unconditional: 13431, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8834, independent: 8814, independent conditional: 0, independent unconditional: 8814, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13481, independent: 4617, independent conditional: 0, independent unconditional: 4617, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 8834, unknown conditional: 0, unknown unconditional: 8834] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 422 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 801.2s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 743.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6153 SdHoareTripleChecker+Valid, 18.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6153 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 16.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 654 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 533 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24922 IncrementalHoareTripleChecker+Invalid, 26109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 533 mSolverCounterUnsat, 0 mSDtfsCounter, 24922 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1890 GetRequests, 1132 SyntacticMatches, 11 SemanticMatches, 747 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 32537 ImplicationChecksByTransitivity, 59.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29562occurred in iteration=22, InterpolantAutomatonStates: 311, 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: 0.6s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 37.6s InterpolantComputationTime, 1773 NumberOfCodeBlocks, 1732 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 2140 ConstructedInterpolants, 64 QuantifiedInterpolants, 21292 SizeOfPredicates, 208 NumberOfNonLiveVariables, 10007 ConjunctsInSsa, 490 ConjunctsInUnsatCore, 54 InterpolantComputations, 16 PerfectInterpolantSequences, 2233/2506 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