/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:44:08,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:44:08,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:44:08,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:44:08,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:44:08,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:44:08,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:44:08,192 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:44:08,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:44:08,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:44:08,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:44:08,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:44:08,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:44:08,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:44:08,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:44:08,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:44:08,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:44:08,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:44:08,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:44:08,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:44:08,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:44:08,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:44:08,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:44:08,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:44:08,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:44:08,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:44:08,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:44:08,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:44:08,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:44:08,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:44:08,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:44:08,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:44:08,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:44:08,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:44:08,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:44:08,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:44:08,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:44:08,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:44:08,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:44:08,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:44:08,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:44:08,234 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 04:44:08,260 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:44:08,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:44:08,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:44:08,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:44:08,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:44:08,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:44:08,263 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:44:08,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:44:08,263 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:44:08,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:44:08,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:44:08,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:44:08,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:44:08,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:44:08,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:44:08,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:44:08,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:44:08,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:44:08,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:44:08,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:44:08,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:44:08,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:44:08,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:44:08,266 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:44:08,267 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:44:08,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:44:08,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:44:08,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:44:08,503 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:44:08,506 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:44:08,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-01-28 04:44:09,649 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:44:09,834 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:44:09,835 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-01-28 04:44:09,841 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62194511f/3e61d36a96a84d738bbe2f21ae3c943e/FLAG648a8fd94 [2023-01-28 04:44:09,856 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62194511f/3e61d36a96a84d738bbe2f21ae3c943e [2023-01-28 04:44:09,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:44:09,859 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:44:09,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:44:09,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:44:09,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:44:09,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:44:09" (1/1) ... [2023-01-28 04:44:09,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8de6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:09, skipping insertion in model container [2023-01-28 04:44:09,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:44:09" (1/1) ... [2023-01-28 04:44:09,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:44:09,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:44:10,058 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-01-28 04:44:10,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:44:10,072 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:44:10,096 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c[2553,2566] [2023-01-28 04:44:10,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:44:10,107 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:44:10,107 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:44:10,112 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:44:10,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10 WrapperNode [2023-01-28 04:44:10,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:44:10,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:44:10,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:44:10,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:44:10,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,145 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-01-28 04:44:10,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:44:10,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:44:10,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:44:10,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:44:10,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,168 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:44:10,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:44:10,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:44:10,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:44:10,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (1/1) ... [2023-01-28 04:44:10,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:44:10,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:10,206 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 04:44:10,230 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 04:44:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:44:10,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:44:10,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:44:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:44:10,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:44:10,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:44:10,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:44:10,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:44:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:44:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:44:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:44:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:44:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:44:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:44:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:44:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:44:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:44:10,250 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 04:44:10,364 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:44:10,366 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:44:10,656 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:44:10,747 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:44:10,748 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 04:44:10,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:44:10 BoogieIcfgContainer [2023-01-28 04:44:10,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:44:10,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:44:10,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:44:10,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:44:10,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:44:09" (1/3) ... [2023-01-28 04:44:10,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee6d0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:44:10, skipping insertion in model container [2023-01-28 04:44:10,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:44:10" (2/3) ... [2023-01-28 04:44:10,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee6d0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:44:10, skipping insertion in model container [2023-01-28 04:44:10,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:44:10" (3/3) ... [2023-01-28 04:44:10,759 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-01-28 04:44:10,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:44:10,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:44:10,774 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:44:10,854 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 04:44:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 144 transitions, 312 flow [2023-01-28 04:44:10,988 INFO L130 PetriNetUnfolder]: 12/141 cut-off events. [2023-01-28 04:44:10,988 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:44:11,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 141 events. 12/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 04:44:11,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 144 transitions, 312 flow [2023-01-28 04:44:11,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 131 transitions, 280 flow [2023-01-28 04:44:11,013 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:44:11,027 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 131 transitions, 280 flow [2023-01-28 04:44:11,029 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 131 transitions, 280 flow [2023-01-28 04:44:11,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 131 transitions, 280 flow [2023-01-28 04:44:11,064 INFO L130 PetriNetUnfolder]: 12/131 cut-off events. [2023-01-28 04:44:11,065 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:44:11,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 12/131 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-28 04:44:11,066 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-28 04:44:15,420 INFO L134 LiptonReduction]: Checked pairs total: 1615 [2023-01-28 04:44:15,421 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-01-28 04:44:15,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:44:15,449 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;@5b0f2be6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:44:15,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 04:44:15,464 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-28 04:44:15,465 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:44:15,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:15,465 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] [2023-01-28 04:44:15,466 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 04:44:15,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1107178468, now seen corresponding path program 1 times [2023-01-28 04:44:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474211594] [2023-01-28 04:44:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:15,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:16,156 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 04:44:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474211594] [2023-01-28 04:44:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474211594] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:44:16,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:44:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 04:44:16,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065766621] [2023-01-28 04:44:16,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:44:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:44:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:16,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:44:16,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 04:44:16,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 273 [2023-01-28 04:44:16,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:16,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 273 [2023-01-28 04:44:16,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:16,478 INFO L130 PetriNetUnfolder]: 679/943 cut-off events. [2023-01-28 04:44:16,478 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 04:44:16,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 943 events. 679/943 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3493 event pairs, 265 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 765. Up to 370 conditions per place. [2023-01-28 04:44:16,489 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 55 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-01-28 04:44:16,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 65 transitions, 304 flow [2023-01-28 04:44:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:44:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:44:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 765 transitions. [2023-01-28 04:44:16,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4003139717425432 [2023-01-28 04:44:16,510 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 765 transitions. [2023-01-28 04:44:16,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 765 transitions. [2023-01-28 04:44:16,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:16,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 765 transitions. [2023-01-28 04:44:16,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,528 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,529 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 7 states and 765 transitions. [2023-01-28 04:44:16,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 65 transitions, 304 flow [2023-01-28 04:44:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 65 transitions, 272 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 04:44:16,536 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 97 flow [2023-01-28 04:44:16,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-01-28 04:44:16,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-01-28 04:44:16,540 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 97 flow [2023-01-28 04:44:16,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:16,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:16,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:44:16,544 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 04:44:16,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1966737023, now seen corresponding path program 1 times [2023-01-28 04:44:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:16,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047633487] [2023-01-28 04:44:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:16,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:16,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047633487] [2023-01-28 04:44:16,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047633487] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:44:16,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:44:16,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 04:44:16,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875877613] [2023-01-28 04:44:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:44:16,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:44:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:44:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 04:44:16,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 273 [2023-01-28 04:44:16,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:16,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 273 [2023-01-28 04:44:16,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:16,884 INFO L130 PetriNetUnfolder]: 342/475 cut-off events. [2023-01-28 04:44:16,884 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2023-01-28 04:44:16,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 475 events. 342/475 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1468 event pairs, 133 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 1137. Up to 371 conditions per place. [2023-01-28 04:44:16,888 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 30 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-01-28 04:44:16,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 168 flow [2023-01-28 04:44:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:44:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:44:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2023-01-28 04:44:16,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3965201465201465 [2023-01-28 04:44:16,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 433 transitions. [2023-01-28 04:44:16,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 433 transitions. [2023-01-28 04:44:16,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:16,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 433 transitions. [2023-01-28 04:44:16,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,896 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 97 flow. Second operand 4 states and 433 transitions. [2023-01-28 04:44:16,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 168 flow [2023-01-28 04:44:16,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 157 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 04:44:16,900 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 77 flow [2023-01-28 04:44:16,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-28 04:44:16,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-01-28 04:44:16,902 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 77 flow [2023-01-28 04:44:16,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:16,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:16,903 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 04:44:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 04:44:16,903 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 04:44:16,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash -805618038, now seen corresponding path program 1 times [2023-01-28 04:44:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:16,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206056497] [2023-01-28 04:44:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:17,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:17,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206056497] [2023-01-28 04:44:17,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206056497] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115746755] [2023-01-28 04:44:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:17,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:17,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:17,025 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 04:44:17,048 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 04:44:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:17,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:44:17,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:17,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:17,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:17,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115746755] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:17,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:44:17,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-01-28 04:44:17,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149672958] [2023-01-28 04:44:17,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:44:17,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:44:17,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:44:17,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-28 04:44:17,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-01-28 04:44:17,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:17,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:17,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-01-28 04:44:17,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:17,380 INFO L130 PetriNetUnfolder]: 311/453 cut-off events. [2023-01-28 04:44:17,380 INFO L131 PetriNetUnfolder]: For 117/143 co-relation queries the response was YES. [2023-01-28 04:44:17,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 453 events. 311/453 cut-off events. For 117/143 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1443 event pairs, 73 based on Foata normal form. 26/371 useless extension candidates. Maximal degree in co-relation 1011. Up to 349 conditions per place. [2023-01-28 04:44:17,383 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 31 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-01-28 04:44:17,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 177 flow [2023-01-28 04:44:17,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:44:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:44:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2023-01-28 04:44:17,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40586080586080586 [2023-01-28 04:44:17,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2023-01-28 04:44:17,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2023-01-28 04:44:17,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:17,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2023-01-28 04:44:17,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:17,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:17,391 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:17,391 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 77 flow. Second operand 5 states and 554 transitions. [2023-01-28 04:44:17,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 177 flow [2023-01-28 04:44:17,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 04:44:17,392 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 88 flow [2023-01-28 04:44:17,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-01-28 04:44:17,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 04:44:17,393 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 88 flow [2023-01-28 04:44:17,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:17,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:17,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:17,410 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 04:44:17,607 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 04:44:17,607 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 04:44:17,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1619003621, now seen corresponding path program 1 times [2023-01-28 04:44:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809173532] [2023-01-28 04:44:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:18,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:18,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809173532] [2023-01-28 04:44:18,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809173532] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:18,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132949228] [2023-01-28 04:44:18,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:18,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:18,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:18,352 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 04:44:18,367 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 04:44:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:18,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 04:44:18,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:18,922 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 04:44:18,923 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 73 treesize of output 59 [2023-01-28 04:44:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:19,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:19,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:19,148 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 85 treesize of output 45 [2023-01-28 04:44:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:19,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132949228] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:19,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:19,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-01-28 04:44:19,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202483677] [2023-01-28 04:44:19,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:19,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:44:19,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:19,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:44:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-01-28 04:44:19,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 273 [2023-01-28 04:44:19,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 88 flow. Second operand has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:19,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:19,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 273 [2023-01-28 04:44:19,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:19,948 INFO L130 PetriNetUnfolder]: 599/864 cut-off events. [2023-01-28 04:44:19,949 INFO L131 PetriNetUnfolder]: For 286/286 co-relation queries the response was YES. [2023-01-28 04:44:19,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 864 events. 599/864 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3184 event pairs, 84 based on Foata normal form. 1/639 useless extension candidates. Maximal degree in co-relation 1966. Up to 639 conditions per place. [2023-01-28 04:44:19,955 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 64 selfloop transitions, 25 changer transitions 1/91 dead transitions. [2023-01-28 04:44:19,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 91 transitions, 453 flow [2023-01-28 04:44:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:44:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:44:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 907 transitions. [2023-01-28 04:44:19,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322344322344322 [2023-01-28 04:44:19,959 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 907 transitions. [2023-01-28 04:44:19,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 907 transitions. [2023-01-28 04:44:19,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:19,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 907 transitions. [2023-01-28 04:44:19,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:19,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:19,967 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 273.0) internal successors, (3003), 11 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:19,967 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 88 flow. Second operand 10 states and 907 transitions. [2023-01-28 04:44:19,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 91 transitions, 453 flow [2023-01-28 04:44:19,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 91 transitions, 431 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 04:44:19,972 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 230 flow [2023-01-28 04:44:19,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2023-01-28 04:44:19,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2023-01-28 04:44:19,973 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 230 flow [2023-01-28 04:44:19,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:19,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:19,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:19,986 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 04:44:20,182 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 04:44:20,183 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 04:44:20,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash 431023461, now seen corresponding path program 2 times [2023-01-28 04:44:20,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:20,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752757828] [2023-01-28 04:44:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:20,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:20,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:20,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752757828] [2023-01-28 04:44:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752757828] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89310711] [2023-01-28 04:44:20,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:44:20,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:20,784 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 04:44:20,810 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 04:44:20,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:44:20,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:44:20,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 04:44:20,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:21,228 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:44:21,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:21,231 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 64 treesize of output 37 [2023-01-28 04:44:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:21,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:21,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:21,440 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 85 treesize of output 45 [2023-01-28 04:44:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:21,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89310711] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:21,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:21,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-01-28 04:44:21,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603014388] [2023-01-28 04:44:21,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:21,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-01-28 04:44:21,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:21,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-01-28 04:44:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-01-28 04:44:21,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 273 [2023-01-28 04:44:21,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 230 flow. Second operand has 25 states, 25 states have (on average 81.52) internal successors, (2038), 25 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:21,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:21,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 273 [2023-01-28 04:44:21,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:22,843 INFO L130 PetriNetUnfolder]: 843/1253 cut-off events. [2023-01-28 04:44:22,843 INFO L131 PetriNetUnfolder]: For 848/848 co-relation queries the response was YES. [2023-01-28 04:44:22,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3830 conditions, 1253 events. 843/1253 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4605 event pairs, 128 based on Foata normal form. 16/1269 useless extension candidates. Maximal degree in co-relation 2872. Up to 832 conditions per place. [2023-01-28 04:44:22,852 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 98 selfloop transitions, 57 changer transitions 7/162 dead transitions. [2023-01-28 04:44:22,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 162 transitions, 949 flow [2023-01-28 04:44:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:44:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:44:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1811 transitions. [2023-01-28 04:44:22,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31589045874760163 [2023-01-28 04:44:22,858 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1811 transitions. [2023-01-28 04:44:22,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1811 transitions. [2023-01-28 04:44:22,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:22,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1811 transitions. [2023-01-28 04:44:22,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 86.23809523809524) internal successors, (1811), 21 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:22,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:22,874 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:22,874 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 230 flow. Second operand 21 states and 1811 transitions. [2023-01-28 04:44:22,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 162 transitions, 949 flow [2023-01-28 04:44:22,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 943 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 04:44:22,881 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 625 flow [2023-01-28 04:44:22,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=625, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-01-28 04:44:22,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-01-28 04:44:22,883 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 625 flow [2023-01-28 04:44:22,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.52) internal successors, (2038), 25 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:22,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:22,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:22,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 04:44:23,090 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 04:44:23,091 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 04:44:23,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:23,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1301817307, now seen corresponding path program 3 times [2023-01-28 04:44:23,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:23,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385640117] [2023-01-28 04:44:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:23,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:23,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:23,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385640117] [2023-01-28 04:44:23,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385640117] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:23,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119409989] [2023-01-28 04:44:23,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:44:23,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:23,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:23,665 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 04:44:23,672 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 04:44:23,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:44:23,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:44:23,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 04:44:23,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:24,108 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:44:24,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:24,111 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 64 treesize of output 37 [2023-01-28 04:44:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:24,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:24,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:24,314 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 85 treesize of output 45 [2023-01-28 04:44:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:24,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119409989] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:24,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:24,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-01-28 04:44:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819977357] [2023-01-28 04:44:24,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:24,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:44:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:44:24,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-01-28 04:44:24,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 273 [2023-01-28 04:44:24,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 625 flow. Second operand has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:24,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:24,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 273 [2023-01-28 04:44:24,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:25,498 INFO L130 PetriNetUnfolder]: 1085/1624 cut-off events. [2023-01-28 04:44:25,498 INFO L131 PetriNetUnfolder]: For 3498/3528 co-relation queries the response was YES. [2023-01-28 04:44:25,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6522 conditions, 1624 events. 1085/1624 cut-off events. For 3498/3528 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6901 event pairs, 159 based on Foata normal form. 32/1632 useless extension candidates. Maximal degree in co-relation 6485. Up to 958 conditions per place. [2023-01-28 04:44:25,513 INFO L137 encePairwiseOnDemand]: 260/273 looper letters, 106 selfloop transitions, 62 changer transitions 4/177 dead transitions. [2023-01-28 04:44:25,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 177 transitions, 1332 flow [2023-01-28 04:44:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:44:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:44:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1192 transitions. [2023-01-28 04:44:25,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.335869258946182 [2023-01-28 04:44:25,518 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1192 transitions. [2023-01-28 04:44:25,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1192 transitions. [2023-01-28 04:44:25,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:25,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1192 transitions. [2023-01-28 04:44:25,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.6923076923077) internal successors, (1192), 13 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:25,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:25,528 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:25,528 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 625 flow. Second operand 13 states and 1192 transitions. [2023-01-28 04:44:25,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 177 transitions, 1332 flow [2023-01-28 04:44:25,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 177 transitions, 1293 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-01-28 04:44:25,542 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 940 flow [2023-01-28 04:44:25,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=940, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2023-01-28 04:44:25,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2023-01-28 04:44:25,544 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 940 flow [2023-01-28 04:44:25,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.6086956521739) internal successors, (1946), 23 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:25,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:25,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:25,555 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 04:44:25,752 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 04:44:25,752 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 04:44:25,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash -864561951, now seen corresponding path program 4 times [2023-01-28 04:44:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833892897] [2023-01-28 04:44:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:26,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833892897] [2023-01-28 04:44:26,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833892897] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:26,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931162142] [2023-01-28 04:44:26,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:44:26,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:26,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:26,614 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 04:44:26,616 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 04:44:26,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:44:26,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:44:26,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 43 conjunts are in the unsatisfiable core [2023-01-28 04:44:26,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:26,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 04:44:26,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:44:26,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:44:27,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:44:27,130 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 34 treesize of output 32 [2023-01-28 04:44:27,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:44:27,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:27,297 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 64 treesize of output 37 [2023-01-28 04:44:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:27,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:27,488 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse1))) (or (<= c_~min2~0 .cse0) (= c_~min1~0 .cse0)))) (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse1) c_~min2~0))))) is different from false [2023-01-28 04:44:28,221 WARN L839 $PredicateComparison]: unable to prove that (and (or (= c_~min2~0 c_~min1~0) (forall ((~M~0 Int) (v_ArrVal_263 (Array Int Int)) (v_ArrVal_265 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (or (< 0 ~M~0) (< ~M~0 0) (< (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~min1~0) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~min2~0))))) (forall ((~M~0 Int)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (or (< (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~min1~0) (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse2 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (= c_~min1~0 .cse2) (<= c_~min2~0 .cse2))))))) (< 0 ~M~0) (< ~M~0 0))) (forall ((~M~0 Int)) (or (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= c_~min1~0 .cse3) (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~min2~0)) (= c_~min2~0 .cse3))))) (< 0 ~M~0) (< ~M~0 0))) (forall ((~M~0 Int)) (or (< 0 ~M~0) (< ~M~0 0) (forall ((v_ArrVal_263 (Array Int Int)) (v_ArrVal_264 (Array Int Int))) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_263) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_264))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= c_~min1~0 .cse5) (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse6 (select (select (store .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* ~M~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (<= c_~min2~0 .cse6) (= .cse6 .cse5))))))))))) is different from false [2023-01-28 04:44:28,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:28,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 76 [2023-01-28 04:44:28,312 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,312 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 1730 treesize of output 1586 [2023-01-28 04:44:28,355 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 290 [2023-01-28 04:44:28,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 172 [2023-01-28 04:44:28,390 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 108 [2023-01-28 04:44:28,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:28,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 66 [2023-01-28 04:44:28,488 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:44:28,496 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 170 [2023-01-28 04:44:28,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:44:28,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 75 [2023-01-28 04:44:28,522 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 128 [2023-01-28 04:44:28,592 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:28,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 59 [2023-01-28 04:44:28,599 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:44:28,607 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 372 treesize of output 344 [2023-01-28 04:44:28,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:44:28,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2023-01-28 04:44:28,676 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 65 [2023-01-28 04:44:28,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:28,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 46 [2023-01-28 04:44:28,722 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:44:28,729 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 111 [2023-01-28 04:44:28,743 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 95 [2023-01-28 04:44:28,756 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:44:28,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 45 [2023-01-28 04:44:28,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-01-28 04:44:28,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931162142] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:28,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:28,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 29 [2023-01-28 04:44:28,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695748189] [2023-01-28 04:44:28,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:28,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 04:44:28,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:28,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 04:44:28,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=699, Unknown=3, NotChecked=110, Total=930 [2023-01-28 04:44:28,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 273 [2023-01-28 04:44:28,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 940 flow. Second operand has 31 states, 31 states have (on average 73.93548387096774) internal successors, (2292), 31 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:28,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:28,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 273 [2023-01-28 04:44:28,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:30,793 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~min2~0 c_~min1~0))) (and (or .cse0 (<= (+ c_thread3Thread1of1ForFork0_~i~2 1) c_~N~0)) (or (let ((.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_265 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse2))) (or (<= c_~min2~0 .cse1) (= c_~min1~0 .cse1)))) (or .cse0 (forall ((v_ArrVal_265 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_265) c_~A~0.base) .cse2) c_~min2~0))))) (< c_thread1Thread1of1ForFork1_~i~0 c_~N~0)))) is different from false [2023-01-28 04:44:41,968 INFO L130 PetriNetUnfolder]: 1889/2864 cut-off events. [2023-01-28 04:44:41,968 INFO L131 PetriNetUnfolder]: For 10844/10941 co-relation queries the response was YES. [2023-01-28 04:44:41,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13049 conditions, 2864 events. 1889/2864 cut-off events. For 10844/10941 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14242 event pairs, 175 based on Foata normal form. 44/2863 useless extension candidates. Maximal degree in co-relation 13007. Up to 1323 conditions per place. [2023-01-28 04:44:41,993 INFO L137 encePairwiseOnDemand]: 255/273 looper letters, 176 selfloop transitions, 176 changer transitions 6/363 dead transitions. [2023-01-28 04:44:41,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 363 transitions, 3015 flow [2023-01-28 04:44:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 04:44:41,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 04:44:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2578 transitions. [2023-01-28 04:44:42,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2951007326007326 [2023-01-28 04:44:42,002 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2578 transitions. [2023-01-28 04:44:42,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2578 transitions. [2023-01-28 04:44:42,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:42,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2578 transitions. [2023-01-28 04:44:42,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 80.5625) internal successors, (2578), 32 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:42,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 273.0) internal successors, (9009), 33 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:42,021 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 273.0) internal successors, (9009), 33 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:42,021 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 940 flow. Second operand 32 states and 2578 transitions. [2023-01-28 04:44:42,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 363 transitions, 3015 flow [2023-01-28 04:44:42,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 363 transitions, 2882 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-01-28 04:44:42,055 INFO L231 Difference]: Finished difference. Result has 134 places, 227 transitions, 2375 flow [2023-01-28 04:44:42,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2375, PETRI_PLACES=134, PETRI_TRANSITIONS=227} [2023-01-28 04:44:42,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2023-01-28 04:44:42,056 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 227 transitions, 2375 flow [2023-01-28 04:44:42,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 73.93548387096774) internal successors, (2292), 31 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:42,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:42,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:42,063 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 04:44:42,263 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 04:44:42,263 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 04:44:42,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:42,264 INFO L85 PathProgramCache]: Analyzing trace with hash -148406021, now seen corresponding path program 5 times [2023-01-28 04:44:42,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:42,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389085835] [2023-01-28 04:44:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:42,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:42,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:42,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:42,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389085835] [2023-01-28 04:44:42,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389085835] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:42,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311546135] [2023-01-28 04:44:42,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:44:42,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:42,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:42,817 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 04:44:42,827 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 04:44:42,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 04:44:42,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:44:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 04:44:42,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:43,223 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:43,223 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 73 treesize of output 67 [2023-01-28 04:44:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:43,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:43,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:43,575 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 85 treesize of output 45 [2023-01-28 04:44:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:43,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311546135] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:43,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:43,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 6] total 22 [2023-01-28 04:44:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540280208] [2023-01-28 04:44:43,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:43,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 04:44:43,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 04:44:43,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2023-01-28 04:44:43,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 273 [2023-01-28 04:44:43,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 227 transitions, 2375 flow. Second operand has 24 states, 24 states have (on average 81.625) internal successors, (1959), 24 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:43,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:43,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 273 [2023-01-28 04:44:43,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:47,575 INFO L130 PetriNetUnfolder]: 3048/4523 cut-off events. [2023-01-28 04:44:47,575 INFO L131 PetriNetUnfolder]: For 44013/44013 co-relation queries the response was YES. [2023-01-28 04:44:47,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30208 conditions, 4523 events. 3048/4523 cut-off events. For 44013/44013 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22239 event pairs, 448 based on Foata normal form. 4/4527 useless extension candidates. Maximal degree in co-relation 30148. Up to 2663 conditions per place. [2023-01-28 04:44:47,629 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 305 selfloop transitions, 248 changer transitions 12/565 dead transitions. [2023-01-28 04:44:47,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 565 transitions, 7052 flow [2023-01-28 04:44:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-01-28 04:44:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-01-28 04:44:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3953 transitions. [2023-01-28 04:44:47,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31477942347507565 [2023-01-28 04:44:47,640 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3953 transitions. [2023-01-28 04:44:47,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3953 transitions. [2023-01-28 04:44:47,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:47,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3953 transitions. [2023-01-28 04:44:47,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 85.93478260869566) internal successors, (3953), 46 states have internal predecessors, (3953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:47,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 273.0) internal successors, (12831), 47 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:47,676 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 273.0) internal successors, (12831), 47 states have internal predecessors, (12831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:47,676 INFO L175 Difference]: Start difference. First operand has 134 places, 227 transitions, 2375 flow. Second operand 46 states and 3953 transitions. [2023-01-28 04:44:47,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 565 transitions, 7052 flow [2023-01-28 04:44:47,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 565 transitions, 6400 flow, removed 305 selfloop flow, removed 6 redundant places. [2023-01-28 04:44:47,813 INFO L231 Difference]: Finished difference. Result has 186 places, 408 transitions, 4488 flow [2023-01-28 04:44:47,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4488, PETRI_PLACES=186, PETRI_TRANSITIONS=408} [2023-01-28 04:44:47,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-01-28 04:44:47,815 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 408 transitions, 4488 flow [2023-01-28 04:44:47,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 81.625) internal successors, (1959), 24 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:47,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:47,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:47,827 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 04:44:48,022 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 04:44:48,023 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 04:44:48,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash -34831059, now seen corresponding path program 6 times [2023-01-28 04:44:48,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:48,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544306328] [2023-01-28 04:44:48,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:48,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:48,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544306328] [2023-01-28 04:44:48,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544306328] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:48,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957767943] [2023-01-28 04:44:48,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:44:48,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:48,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:48,807 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 04:44:48,808 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 04:44:48,893 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:44:48,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:44:48,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 04:44:48,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:49,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-01-28 04:44:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:49,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:49,269 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:49,269 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 73 treesize of output 45 [2023-01-28 04:44:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957767943] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:49,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 22 [2023-01-28 04:44:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081282338] [2023-01-28 04:44:49,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:49,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 04:44:49,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 04:44:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-01-28 04:44:49,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 273 [2023-01-28 04:44:49,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 408 transitions, 4488 flow. Second operand has 24 states, 24 states have (on average 71.54166666666667) internal successors, (1717), 24 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:49,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:49,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 273 [2023-01-28 04:44:49,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:51,198 INFO L130 PetriNetUnfolder]: 3558/5287 cut-off events. [2023-01-28 04:44:51,199 INFO L131 PetriNetUnfolder]: For 54541/54541 co-relation queries the response was YES. [2023-01-28 04:44:51,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36949 conditions, 5287 events. 3558/5287 cut-off events. For 54541/54541 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26844 event pairs, 774 based on Foata normal form. 4/5285 useless extension candidates. Maximal degree in co-relation 36876. Up to 4469 conditions per place. [2023-01-28 04:44:51,259 INFO L137 encePairwiseOnDemand]: 260/273 looper letters, 401 selfloop transitions, 156 changer transitions 3/560 dead transitions. [2023-01-28 04:44:51,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 560 transitions, 7422 flow [2023-01-28 04:44:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 04:44:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 04:44:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1686 transitions. [2023-01-28 04:44:51,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2807192807192807 [2023-01-28 04:44:51,263 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1686 transitions. [2023-01-28 04:44:51,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1686 transitions. [2023-01-28 04:44:51,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:51,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1686 transitions. [2023-01-28 04:44:51,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 76.63636363636364) internal successors, (1686), 22 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:51,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:51,272 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:51,272 INFO L175 Difference]: Start difference. First operand has 186 places, 408 transitions, 4488 flow. Second operand 22 states and 1686 transitions. [2023-01-28 04:44:51,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 560 transitions, 7422 flow [2023-01-28 04:44:51,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 560 transitions, 6418 flow, removed 483 selfloop flow, removed 4 redundant places. [2023-01-28 04:44:51,631 INFO L231 Difference]: Finished difference. Result has 210 places, 474 transitions, 4872 flow [2023-01-28 04:44:51,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4872, PETRI_PLACES=210, PETRI_TRANSITIONS=474} [2023-01-28 04:44:51,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2023-01-28 04:44:51,633 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 474 transitions, 4872 flow [2023-01-28 04:44:51,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 71.54166666666667) internal successors, (1717), 24 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:51,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:51,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:51,640 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 04:44:51,836 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 04:44:51,836 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 04:44:51,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1677275523, now seen corresponding path program 7 times [2023-01-28 04:44:51,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:51,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426641243] [2023-01-28 04:44:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426641243] [2023-01-28 04:44:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426641243] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533092850] [2023-01-28 04:44:52,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:44:52,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:52,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:52,582 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 04:44:52,584 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 04:44:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:52,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-28 04:44:52,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:52,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:44:52,966 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 34 treesize of output 32 [2023-01-28 04:44:53,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:44:53,190 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 34 treesize of output 32 [2023-01-28 04:44:53,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:44:53,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:53,358 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 64 treesize of output 37 [2023-01-28 04:44:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:53,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:53,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:44:53,752 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 331 treesize of output 283 [2023-01-28 04:44:53,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 159 [2023-01-28 04:44:53,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 153 [2023-01-28 04:44:53,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 141 [2023-01-28 04:44:53,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 129 [2023-01-28 04:44:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:44:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533092850] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:54,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:54,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 28 [2023-01-28 04:44:54,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795279880] [2023-01-28 04:44:54,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:54,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 04:44:54,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 04:44:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=742, Unknown=16, NotChecked=0, Total=870 [2023-01-28 04:44:54,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 273 [2023-01-28 04:44:54,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 474 transitions, 4872 flow. Second operand has 30 states, 30 states have (on average 74.13333333333334) internal successors, (2224), 30 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:54,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:54,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 273 [2023-01-28 04:44:54,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:58,425 INFO L130 PetriNetUnfolder]: 4569/6870 cut-off events. [2023-01-28 04:44:58,425 INFO L131 PetriNetUnfolder]: For 68546/68546 co-relation queries the response was YES. [2023-01-28 04:44:58,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45874 conditions, 6870 events. 4569/6870 cut-off events. For 68546/68546 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 37858 event pairs, 410 based on Foata normal form. 66/6928 useless extension candidates. Maximal degree in co-relation 45795. Up to 4532 conditions per place. [2023-01-28 04:44:58,571 INFO L137 encePairwiseOnDemand]: 261/273 looper letters, 468 selfloop transitions, 273 changer transitions 8/749 dead transitions. [2023-01-28 04:44:58,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 749 transitions, 8962 flow [2023-01-28 04:44:58,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 04:44:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 04:44:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1726 transitions. [2023-01-28 04:44:58,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30106401534972965 [2023-01-28 04:44:58,575 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1726 transitions. [2023-01-28 04:44:58,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1726 transitions. [2023-01-28 04:44:58,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:44:58,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1726 transitions. [2023-01-28 04:44:58,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.19047619047619) internal successors, (1726), 21 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:58,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:58,583 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 273.0) internal successors, (6006), 22 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:58,584 INFO L175 Difference]: Start difference. First operand has 210 places, 474 transitions, 4872 flow. Second operand 21 states and 1726 transitions. [2023-01-28 04:44:58,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 749 transitions, 8962 flow [2023-01-28 04:44:58,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 749 transitions, 8558 flow, removed 132 selfloop flow, removed 13 redundant places. [2023-01-28 04:44:58,803 INFO L231 Difference]: Finished difference. Result has 226 places, 597 transitions, 6472 flow [2023-01-28 04:44:58,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6472, PETRI_PLACES=226, PETRI_TRANSITIONS=597} [2023-01-28 04:44:58,805 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2023-01-28 04:44:58,805 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 597 transitions, 6472 flow [2023-01-28 04:44:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 74.13333333333334) internal successors, (2224), 30 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:58,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:44:58,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:44:58,811 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 04:44:59,011 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 04:44:59,011 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 04:44:59,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:44:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash -646141863, now seen corresponding path program 1 times [2023-01-28 04:44:59,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:44:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004429707] [2023-01-28 04:44:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:44:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:59,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:59,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:44:59,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004429707] [2023-01-28 04:44:59,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004429707] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:44:59,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929058013] [2023-01-28 04:44:59,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:44:59,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:44:59,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:44:59,125 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 04:44:59,128 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 04:44:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:44:59,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:44:59,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:44:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:59,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:44:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:44:59,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929058013] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:44:59,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:44:59,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 04:44:59,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867747501] [2023-01-28 04:44:59,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:44:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:44:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:44:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:44:59,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:44:59,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:44:59,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 597 transitions, 6472 flow. Second operand has 18 states, 18 states have (on average 99.16666666666667) internal successors, (1785), 18 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:44:59,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:44:59,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:44:59,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:01,927 INFO L130 PetriNetUnfolder]: 7121/11022 cut-off events. [2023-01-28 04:45:01,927 INFO L131 PetriNetUnfolder]: For 145351/145432 co-relation queries the response was YES. [2023-01-28 04:45:01,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79507 conditions, 11022 events. 7121/11022 cut-off events. For 145351/145432 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 70540 event pairs, 468 based on Foata normal form. 341/11357 useless extension candidates. Maximal degree in co-relation 79420. Up to 3675 conditions per place. [2023-01-28 04:45:02,024 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 1268 selfloop transitions, 254 changer transitions 23/1564 dead transitions. [2023-01-28 04:45:02,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 1564 transitions, 19496 flow [2023-01-28 04:45:02,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 04:45:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 04:45:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2129 transitions. [2023-01-28 04:45:02,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38992673992673993 [2023-01-28 04:45:02,030 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2129 transitions. [2023-01-28 04:45:02,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2129 transitions. [2023-01-28 04:45:02,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:02,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2129 transitions. [2023-01-28 04:45:02,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 106.45) internal successors, (2129), 20 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:02,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 273.0) internal successors, (5733), 21 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:02,043 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 273.0) internal successors, (5733), 21 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:02,043 INFO L175 Difference]: Start difference. First operand has 226 places, 597 transitions, 6472 flow. Second operand 20 states and 2129 transitions. [2023-01-28 04:45:02,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 1564 transitions, 19496 flow [2023-01-28 04:45:02,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 1564 transitions, 18767 flow, removed 283 selfloop flow, removed 9 redundant places. [2023-01-28 04:45:02,469 INFO L231 Difference]: Finished difference. Result has 245 places, 779 transitions, 9052 flow [2023-01-28 04:45:02,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6018, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9052, PETRI_PLACES=245, PETRI_TRANSITIONS=779} [2023-01-28 04:45:02,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2023-01-28 04:45:02,470 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 779 transitions, 9052 flow [2023-01-28 04:45:02,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 99.16666666666667) internal successors, (1785), 18 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:02,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:02,471 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:45:02,477 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 04:45:02,676 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 04:45:02,677 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 04:45:02,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1167316142, now seen corresponding path program 8 times [2023-01-28 04:45:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:02,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646451047] [2023-01-28 04:45:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:02,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:02,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:02,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646451047] [2023-01-28 04:45:02,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646451047] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479012792] [2023-01-28 04:45:02,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:45:02,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:02,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:02,773 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 04:45:02,802 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 04:45:02,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:45:02,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:02,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:45:02,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:02,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:02,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479012792] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:02,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:02,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 04:45:02,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134857134] [2023-01-28 04:45:02,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:02,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 04:45:02,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:02,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 04:45:02,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:45:02,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-01-28 04:45:02,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 779 transitions, 9052 flow. Second operand has 14 states, 14 states have (on average 106.78571428571429) internal successors, (1495), 14 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:02,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:02,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-01-28 04:45:02,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:05,114 INFO L130 PetriNetUnfolder]: 5538/8875 cut-off events. [2023-01-28 04:45:05,115 INFO L131 PetriNetUnfolder]: For 148386/149728 co-relation queries the response was YES. [2023-01-28 04:45:05,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68751 conditions, 8875 events. 5538/8875 cut-off events. For 148386/149728 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 59626 event pairs, 1039 based on Foata normal form. 853/9431 useless extension candidates. Maximal degree in co-relation 68656. Up to 4526 conditions per place. [2023-01-28 04:45:05,282 INFO L137 encePairwiseOnDemand]: 267/273 looper letters, 671 selfloop transitions, 58 changer transitions 22/820 dead transitions. [2023-01-28 04:45:05,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 820 transitions, 11316 flow [2023-01-28 04:45:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:45:05,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:45:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 904 transitions. [2023-01-28 04:45:05,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2023-01-28 04:45:05,285 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 904 transitions. [2023-01-28 04:45:05,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 904 transitions. [2023-01-28 04:45:05,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:05,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 904 transitions. [2023-01-28 04:45:05,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.0) internal successors, (904), 8 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:05,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:05,291 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:05,292 INFO L175 Difference]: Start difference. First operand has 245 places, 779 transitions, 9052 flow. Second operand 8 states and 904 transitions. [2023-01-28 04:45:05,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 820 transitions, 11316 flow [2023-01-28 04:45:05,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 820 transitions, 10698 flow, removed 301 selfloop flow, removed 5 redundant places. [2023-01-28 04:45:05,938 INFO L231 Difference]: Finished difference. Result has 245 places, 682 transitions, 7731 flow [2023-01-28 04:45:05,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=7486, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7731, PETRI_PLACES=245, PETRI_TRANSITIONS=682} [2023-01-28 04:45:05,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2023-01-28 04:45:05,939 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 682 transitions, 7731 flow [2023-01-28 04:45:05,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.78571428571429) internal successors, (1495), 14 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:05,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:05,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:45:05,944 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 04:45:06,141 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 04:45:06,141 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 04:45:06,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1828925582, now seen corresponding path program 9 times [2023-01-28 04:45:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:06,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551021501] [2023-01-28 04:45:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:45:06,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:06,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551021501] [2023-01-28 04:45:06,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551021501] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:06,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549812415] [2023-01-28 04:45:06,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:45:06,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:06,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:06,253 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 04:45:06,279 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 04:45:06,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:45:06,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:06,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:45:06,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:45:06,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:45:06,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549812415] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:06,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-01-28 04:45:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356632022] [2023-01-28 04:45:06,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:06,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 04:45:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 04:45:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:45:06,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 273 [2023-01-28 04:45:06,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 682 transitions, 7731 flow. Second operand has 15 states, 15 states have (on average 106.93333333333334) internal successors, (1604), 15 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:06,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:06,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 273 [2023-01-28 04:45:06,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:08,077 INFO L130 PetriNetUnfolder]: 4588/7260 cut-off events. [2023-01-28 04:45:08,077 INFO L131 PetriNetUnfolder]: For 97661/98639 co-relation queries the response was YES. [2023-01-28 04:45:08,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53505 conditions, 7260 events. 4588/7260 cut-off events. For 97661/98639 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 46740 event pairs, 1266 based on Foata normal form. 412/7432 useless extension candidates. Maximal degree in co-relation 53408. Up to 5024 conditions per place. [2023-01-28 04:45:08,155 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 502 selfloop transitions, 101 changer transitions 2/669 dead transitions. [2023-01-28 04:45:08,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 669 transitions, 9074 flow [2023-01-28 04:45:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:45:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:45:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 793 transitions. [2023-01-28 04:45:08,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2023-01-28 04:45:08,157 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 793 transitions. [2023-01-28 04:45:08,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 793 transitions. [2023-01-28 04:45:08,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:08,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 793 transitions. [2023-01-28 04:45:08,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 113.28571428571429) internal successors, (793), 7 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:08,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:08,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:08,160 INFO L175 Difference]: Start difference. First operand has 245 places, 682 transitions, 7731 flow. Second operand 7 states and 793 transitions. [2023-01-28 04:45:08,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 669 transitions, 9074 flow [2023-01-28 04:45:08,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 669 transitions, 8866 flow, removed 71 selfloop flow, removed 8 redundant places. [2023-01-28 04:45:08,464 INFO L231 Difference]: Finished difference. Result has 240 places, 600 transitions, 7115 flow [2023-01-28 04:45:08,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6765, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7115, PETRI_PLACES=240, PETRI_TRANSITIONS=600} [2023-01-28 04:45:08,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2023-01-28 04:45:08,465 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 600 transitions, 7115 flow [2023-01-28 04:45:08,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 106.93333333333334) internal successors, (1604), 15 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:08,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:08,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:08,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 04:45:08,666 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 04:45:08,666 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 04:45:08,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:08,666 INFO L85 PathProgramCache]: Analyzing trace with hash -175255495, now seen corresponding path program 2 times [2023-01-28 04:45:08,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:08,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489750963] [2023-01-28 04:45:08,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:08,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489750963] [2023-01-28 04:45:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489750963] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996060440] [2023-01-28 04:45:08,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:45:08,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:08,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:08,773 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 04:45:08,794 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 04:45:08,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:45:08,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:08,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 04:45:08,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:08,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:09,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:09,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996060440] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:09,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:09,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2023-01-28 04:45:09,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13877082] [2023-01-28 04:45:09,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:09,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 04:45:09,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 04:45:09,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:45:09,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:45:09,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 600 transitions, 7115 flow. Second operand has 15 states, 15 states have (on average 100.4) internal successors, (1506), 15 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:09,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:09,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:45:09,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:10,760 INFO L130 PetriNetUnfolder]: 4067/6713 cut-off events. [2023-01-28 04:45:10,760 INFO L131 PetriNetUnfolder]: For 70423/70506 co-relation queries the response was YES. [2023-01-28 04:45:10,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45790 conditions, 6713 events. 4067/6713 cut-off events. For 70423/70506 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 44153 event pairs, 417 based on Foata normal form. 513/7223 useless extension candidates. Maximal degree in co-relation 45695. Up to 3635 conditions per place. [2023-01-28 04:45:10,807 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 573 selfloop transitions, 45 changer transitions 38/676 dead transitions. [2023-01-28 04:45:10,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 676 transitions, 9124 flow [2023-01-28 04:45:10,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:45:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:45:10,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 954 transitions. [2023-01-28 04:45:10,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882783882783883 [2023-01-28 04:45:10,809 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 954 transitions. [2023-01-28 04:45:10,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 954 transitions. [2023-01-28 04:45:10,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:10,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 954 transitions. [2023-01-28 04:45:10,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.0) internal successors, (954), 9 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:10,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:10,813 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:10,813 INFO L175 Difference]: Start difference. First operand has 240 places, 600 transitions, 7115 flow. Second operand 9 states and 954 transitions. [2023-01-28 04:45:10,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 676 transitions, 9124 flow [2023-01-28 04:45:11,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 676 transitions, 8664 flow, removed 77 selfloop flow, removed 14 redundant places. [2023-01-28 04:45:11,091 INFO L231 Difference]: Finished difference. Result has 228 places, 463 transitions, 5366 flow [2023-01-28 04:45:11,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5624, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5366, PETRI_PLACES=228, PETRI_TRANSITIONS=463} [2023-01-28 04:45:11,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2023-01-28 04:45:11,092 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 463 transitions, 5366 flow [2023-01-28 04:45:11,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 100.4) internal successors, (1506), 15 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:11,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:11,092 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 04:45:11,097 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 04:45:11,292 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 04:45:11,293 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 04:45:11,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:11,294 INFO L85 PathProgramCache]: Analyzing trace with hash -975950254, now seen corresponding path program 10 times [2023-01-28 04:45:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408100467] [2023-01-28 04:45:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:11,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408100467] [2023-01-28 04:45:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408100467] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847590016] [2023-01-28 04:45:11,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:45:11,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:11,448 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 04:45:11,471 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 04:45:11,536 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:45:11,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:11,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 04:45:11,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:11,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:45:11,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847590016] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:11,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:11,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 17 [2023-01-28 04:45:11,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804195932] [2023-01-28 04:45:11,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:11,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 04:45:11,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:11,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 04:45:11,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-01-28 04:45:11,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:45:11,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 463 transitions, 5366 flow. Second operand has 17 states, 17 states have (on average 100.47058823529412) internal successors, (1708), 17 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:11,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:11,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:45:11,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:12,948 INFO L130 PetriNetUnfolder]: 2563/4351 cut-off events. [2023-01-28 04:45:12,948 INFO L131 PetriNetUnfolder]: For 48835/48931 co-relation queries the response was YES. [2023-01-28 04:45:12,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30846 conditions, 4351 events. 2563/4351 cut-off events. For 48835/48931 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 27904 event pairs, 258 based on Foata normal form. 341/4665 useless extension candidates. Maximal degree in co-relation 30761. Up to 1713 conditions per place. [2023-01-28 04:45:13,062 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 225 selfloop transitions, 150 changer transitions 176/559 dead transitions. [2023-01-28 04:45:13,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 559 transitions, 7508 flow [2023-01-28 04:45:13,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:45:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:45:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1974 transitions. [2023-01-28 04:45:13,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805668016194332 [2023-01-28 04:45:13,065 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1974 transitions. [2023-01-28 04:45:13,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1974 transitions. [2023-01-28 04:45:13,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:13,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1974 transitions. [2023-01-28 04:45:13,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 103.89473684210526) internal successors, (1974), 19 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:13,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:13,071 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:13,072 INFO L175 Difference]: Start difference. First operand has 228 places, 463 transitions, 5366 flow. Second operand 19 states and 1974 transitions. [2023-01-28 04:45:13,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 559 transitions, 7508 flow [2023-01-28 04:45:13,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 559 transitions, 7094 flow, removed 136 selfloop flow, removed 13 redundant places. [2023-01-28 04:45:13,264 INFO L231 Difference]: Finished difference. Result has 229 places, 323 transitions, 3524 flow [2023-01-28 04:45:13,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=4587, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3524, PETRI_PLACES=229, PETRI_TRANSITIONS=323} [2023-01-28 04:45:13,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2023-01-28 04:45:13,265 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 323 transitions, 3524 flow [2023-01-28 04:45:13,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 100.47058823529412) internal successors, (1708), 17 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:13,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:13,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:13,271 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 04:45:13,466 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 04:45:13,466 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 04:45:13,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash -137993499, now seen corresponding path program 11 times [2023-01-28 04:45:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331568174] [2023-01-28 04:45:13,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:13,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:13,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:13,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331568174] [2023-01-28 04:45:13,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331568174] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335952105] [2023-01-28 04:45:13,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:45:13,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:13,601 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 04:45:13,616 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 04:45:13,705 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:45:13,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:13,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:45:13,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:13,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335952105] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:13,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:13,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-01-28 04:45:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978052464] [2023-01-28 04:45:13,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:13,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:45:13,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:13,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:45:13,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:45:13,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 273 [2023-01-28 04:45:13,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 323 transitions, 3524 flow. Second operand has 18 states, 18 states have (on average 96.44444444444444) internal successors, (1736), 18 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:13,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:13,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 273 [2023-01-28 04:45:13,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:14,732 INFO L130 PetriNetUnfolder]: 1612/2350 cut-off events. [2023-01-28 04:45:14,732 INFO L131 PetriNetUnfolder]: For 21374/21374 co-relation queries the response was YES. [2023-01-28 04:45:14,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17118 conditions, 2350 events. 1612/2350 cut-off events. For 21374/21374 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10023 event pairs, 97 based on Foata normal form. 20/2370 useless extension candidates. Maximal degree in co-relation 17055. Up to 1058 conditions per place. [2023-01-28 04:45:14,756 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 280 selfloop transitions, 191 changer transitions 0/471 dead transitions. [2023-01-28 04:45:14,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 471 transitions, 6091 flow [2023-01-28 04:45:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:45:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:45:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1907 transitions. [2023-01-28 04:45:14,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3676498939656834 [2023-01-28 04:45:14,766 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1907 transitions. [2023-01-28 04:45:14,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1907 transitions. [2023-01-28 04:45:14,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:14,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1907 transitions. [2023-01-28 04:45:14,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 100.36842105263158) internal successors, (1907), 19 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:14,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:14,779 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 273.0) internal successors, (5460), 20 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:14,779 INFO L175 Difference]: Start difference. First operand has 229 places, 323 transitions, 3524 flow. Second operand 19 states and 1907 transitions. [2023-01-28 04:45:14,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 471 transitions, 6091 flow [2023-01-28 04:45:14,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 471 transitions, 5373 flow, removed 149 selfloop flow, removed 27 redundant places. [2023-01-28 04:45:14,964 INFO L231 Difference]: Finished difference. Result has 169 places, 370 transitions, 4017 flow [2023-01-28 04:45:14,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3000, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4017, PETRI_PLACES=169, PETRI_TRANSITIONS=370} [2023-01-28 04:45:14,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2023-01-28 04:45:14,965 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 370 transitions, 4017 flow [2023-01-28 04:45:14,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 96.44444444444444) internal successors, (1736), 18 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:14,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:14,965 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:14,974 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 04:45:15,172 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 04:45:15,172 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 04:45:15,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash -116924017, now seen corresponding path program 12 times [2023-01-28 04:45:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912401893] [2023-01-28 04:45:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:15,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912401893] [2023-01-28 04:45:15,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912401893] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:15,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194909549] [2023-01-28 04:45:15,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:45:15,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:15,341 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 04:45:15,344 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 04:45:15,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:45:15,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:15,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:45:15,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:15,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194909549] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:15,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:15,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-28 04:45:15,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775075838] [2023-01-28 04:45:15,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:15,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:45:15,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:45:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:45:15,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:45:15,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 370 transitions, 4017 flow. Second operand has 21 states, 21 states have (on average 98.95238095238095) internal successors, (2078), 21 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:15,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:15,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:45:15,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:16,629 INFO L130 PetriNetUnfolder]: 2224/3303 cut-off events. [2023-01-28 04:45:16,629 INFO L131 PetriNetUnfolder]: For 29196/29229 co-relation queries the response was YES. [2023-01-28 04:45:16,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23637 conditions, 3303 events. 2224/3303 cut-off events. For 29196/29229 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 15788 event pairs, 294 based on Foata normal form. 40/3327 useless extension candidates. Maximal degree in co-relation 23584. Up to 1540 conditions per place. [2023-01-28 04:45:16,655 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 447 selfloop transitions, 175 changer transitions 0/639 dead transitions. [2023-01-28 04:45:16,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 639 transitions, 7997 flow [2023-01-28 04:45:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 04:45:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 04:45:16,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1473 transitions. [2023-01-28 04:45:16,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38540031397174257 [2023-01-28 04:45:16,659 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1473 transitions. [2023-01-28 04:45:16,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1473 transitions. [2023-01-28 04:45:16,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:16,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1473 transitions. [2023-01-28 04:45:16,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 105.21428571428571) internal successors, (1473), 14 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:16,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:16,664 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:16,664 INFO L175 Difference]: Start difference. First operand has 169 places, 370 transitions, 4017 flow. Second operand 14 states and 1473 transitions. [2023-01-28 04:45:16,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 639 transitions, 7997 flow [2023-01-28 04:45:16,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 639 transitions, 7677 flow, removed 75 selfloop flow, removed 6 redundant places. [2023-01-28 04:45:16,793 INFO L231 Difference]: Finished difference. Result has 182 places, 459 transitions, 5462 flow [2023-01-28 04:45:16,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3783, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5462, PETRI_PLACES=182, PETRI_TRANSITIONS=459} [2023-01-28 04:45:16,794 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2023-01-28 04:45:16,794 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 459 transitions, 5462 flow [2023-01-28 04:45:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 98.95238095238095) internal successors, (2078), 21 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:16,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:16,795 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:16,800 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 04:45:16,999 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 04:45:17,000 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 04:45:17,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1665899523, now seen corresponding path program 13 times [2023-01-28 04:45:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639399722] [2023-01-28 04:45:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:17,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639399722] [2023-01-28 04:45:17,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639399722] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:17,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737983032] [2023-01-28 04:45:17,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:45:17,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:17,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:17,124 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 04:45:17,125 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 04:45:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:17,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:45:17,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:17,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:17,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737983032] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:17,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:17,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-01-28 04:45:17,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366295153] [2023-01-28 04:45:17,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:17,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:45:17,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:17,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:45:17,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:45:17,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:45:17,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 459 transitions, 5462 flow. Second operand has 20 states, 20 states have (on average 99.1) internal successors, (1982), 20 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:17,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:17,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:45:17,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:18,521 INFO L130 PetriNetUnfolder]: 3032/4501 cut-off events. [2023-01-28 04:45:18,521 INFO L131 PetriNetUnfolder]: For 45160/45191 co-relation queries the response was YES. [2023-01-28 04:45:18,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34538 conditions, 4501 events. 3032/4501 cut-off events. For 45160/45191 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 22345 event pairs, 350 based on Foata normal form. 42/4531 useless extension candidates. Maximal degree in co-relation 34480. Up to 1808 conditions per place. [2023-01-28 04:45:18,550 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 446 selfloop transitions, 278 changer transitions 0/741 dead transitions. [2023-01-28 04:45:18,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 741 transitions, 9990 flow [2023-01-28 04:45:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 04:45:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 04:45:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1898 transitions. [2023-01-28 04:45:18,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2023-01-28 04:45:18,552 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1898 transitions. [2023-01-28 04:45:18,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1898 transitions. [2023-01-28 04:45:18,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:18,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1898 transitions. [2023-01-28 04:45:18,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 105.44444444444444) internal successors, (1898), 18 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:18,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:18,557 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 273.0) internal successors, (5187), 19 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:18,557 INFO L175 Difference]: Start difference. First operand has 182 places, 459 transitions, 5462 flow. Second operand 18 states and 1898 transitions. [2023-01-28 04:45:18,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 741 transitions, 9990 flow [2023-01-28 04:45:18,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 741 transitions, 9773 flow, removed 106 selfloop flow, removed 3 redundant places. [2023-01-28 04:45:18,704 INFO L231 Difference]: Finished difference. Result has 203 places, 537 transitions, 7360 flow [2023-01-28 04:45:18,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5263, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7360, PETRI_PLACES=203, PETRI_TRANSITIONS=537} [2023-01-28 04:45:18,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2023-01-28 04:45:18,705 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 537 transitions, 7360 flow [2023-01-28 04:45:18,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 99.1) internal successors, (1982), 20 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:18,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:18,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:18,709 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 04:45:18,905 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 04:45:18,906 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 04:45:18,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1130806537, now seen corresponding path program 14 times [2023-01-28 04:45:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828848712] [2023-01-28 04:45:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:19,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828848712] [2023-01-28 04:45:19,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828848712] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:19,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528595209] [2023-01-28 04:45:19,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:45:19,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:19,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:19,037 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 04:45:19,040 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 04:45:19,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:45:19,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:19,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:45:19,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:19,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:19,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528595209] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:19,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:19,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 04:45:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796012794] [2023-01-28 04:45:19,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:19,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:45:19,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:45:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:45:19,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:45:19,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 537 transitions, 7360 flow. Second operand has 19 states, 19 states have (on average 99.15789473684211) internal successors, (1884), 19 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:19,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:19,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:45:19,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:20,187 INFO L130 PetriNetUnfolder]: 3022/4487 cut-off events. [2023-01-28 04:45:20,188 INFO L131 PetriNetUnfolder]: For 49100/49145 co-relation queries the response was YES. [2023-01-28 04:45:20,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35878 conditions, 4487 events. 3022/4487 cut-off events. For 49100/49145 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 22319 event pairs, 540 based on Foata normal form. 52/4526 useless extension candidates. Maximal degree in co-relation 35813. Up to 2575 conditions per place. [2023-01-28 04:45:20,235 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 531 selfloop transitions, 119 changer transitions 0/666 dead transitions. [2023-01-28 04:45:20,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 666 transitions, 10067 flow [2023-01-28 04:45:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:45:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:45:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 941 transitions. [2023-01-28 04:45:20,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382987382987383 [2023-01-28 04:45:20,238 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 941 transitions. [2023-01-28 04:45:20,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 941 transitions. [2023-01-28 04:45:20,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:20,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 941 transitions. [2023-01-28 04:45:20,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.55555555555556) internal successors, (941), 9 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:20,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:20,241 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:20,241 INFO L175 Difference]: Start difference. First operand has 203 places, 537 transitions, 7360 flow. Second operand 9 states and 941 transitions. [2023-01-28 04:45:20,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 666 transitions, 10067 flow [2023-01-28 04:45:20,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 666 transitions, 9644 flow, removed 189 selfloop flow, removed 5 redundant places. [2023-01-28 04:45:20,495 INFO L231 Difference]: Finished difference. Result has 208 places, 535 transitions, 7405 flow [2023-01-28 04:45:20,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6849, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7405, PETRI_PLACES=208, PETRI_TRANSITIONS=535} [2023-01-28 04:45:20,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2023-01-28 04:45:20,496 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 535 transitions, 7405 flow [2023-01-28 04:45:20,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.15789473684211) internal successors, (1884), 19 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:20,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:20,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:20,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-01-28 04:45:20,696 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 04:45:20,697 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 04:45:20,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1249787287, now seen corresponding path program 15 times [2023-01-28 04:45:20,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:20,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536356809] [2023-01-28 04:45:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:20,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:20,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536356809] [2023-01-28 04:45:20,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536356809] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:20,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839859429] [2023-01-28 04:45:20,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:45:20,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:20,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:20,841 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 04:45:20,849 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 04:45:20,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:45:20,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:20,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:45:20,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:21,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:21,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839859429] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:21,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:21,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 04:45:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518657630] [2023-01-28 04:45:21,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:21,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:45:21,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:45:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:45:21,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:45:21,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 535 transitions, 7405 flow. Second operand has 20 states, 20 states have (on average 98.9) internal successors, (1978), 20 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:21,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:21,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:45:21,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:22,124 INFO L130 PetriNetUnfolder]: 2984/4409 cut-off events. [2023-01-28 04:45:22,124 INFO L131 PetriNetUnfolder]: For 49410/49433 co-relation queries the response was YES. [2023-01-28 04:45:22,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35438 conditions, 4409 events. 2984/4409 cut-off events. For 49410/49433 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 21601 event pairs, 553 based on Foata normal form. 36/4432 useless extension candidates. Maximal degree in co-relation 35369. Up to 2575 conditions per place. [2023-01-28 04:45:22,168 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 482 selfloop transitions, 131 changer transitions 0/629 dead transitions. [2023-01-28 04:45:22,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 629 transitions, 9550 flow [2023-01-28 04:45:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:45:22,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:45:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 941 transitions. [2023-01-28 04:45:22,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382987382987383 [2023-01-28 04:45:22,169 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 941 transitions. [2023-01-28 04:45:22,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 941 transitions. [2023-01-28 04:45:22,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:22,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 941 transitions. [2023-01-28 04:45:22,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.55555555555556) internal successors, (941), 9 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:22,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:22,172 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:22,172 INFO L175 Difference]: Start difference. First operand has 208 places, 535 transitions, 7405 flow. Second operand 9 states and 941 transitions. [2023-01-28 04:45:22,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 629 transitions, 9550 flow [2023-01-28 04:45:22,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 629 transitions, 9406 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-01-28 04:45:22,371 INFO L231 Difference]: Finished difference. Result has 212 places, 529 transitions, 7429 flow [2023-01-28 04:45:22,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=7051, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7429, PETRI_PLACES=212, PETRI_TRANSITIONS=529} [2023-01-28 04:45:22,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-01-28 04:45:22,372 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 529 transitions, 7429 flow [2023-01-28 04:45:22,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 98.9) internal successors, (1978), 20 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:22,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:22,373 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:22,377 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 04:45:22,573 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 04:45:22,573 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 04:45:22,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash 333717559, now seen corresponding path program 16 times [2023-01-28 04:45:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:22,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448862873] [2023-01-28 04:45:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:22,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:22,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:22,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448862873] [2023-01-28 04:45:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448862873] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:22,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453141793] [2023-01-28 04:45:22,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:45:22,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:22,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:22,720 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 04:45:22,730 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 04:45:22,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:45:22,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:22,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:45:22,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:22,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:23,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453141793] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:23,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-01-28 04:45:23,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504546211] [2023-01-28 04:45:23,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:45:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:45:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:45:23,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 273 [2023-01-28 04:45:23,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 529 transitions, 7429 flow. Second operand has 20 states, 20 states have (on average 96.05) internal successors, (1921), 20 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:23,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:23,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 273 [2023-01-28 04:45:23,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:24,274 INFO L130 PetriNetUnfolder]: 3040/4448 cut-off events. [2023-01-28 04:45:24,274 INFO L131 PetriNetUnfolder]: For 48847/48847 co-relation queries the response was YES. [2023-01-28 04:45:24,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35752 conditions, 4448 events. 3040/4448 cut-off events. For 48847/48847 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 21236 event pairs, 240 based on Foata normal form. 28/4476 useless extension candidates. Maximal degree in co-relation 35682. Up to 1770 conditions per place. [2023-01-28 04:45:24,316 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 453 selfloop transitions, 292 changer transitions 0/745 dead transitions. [2023-01-28 04:45:24,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 745 transitions, 11506 flow [2023-01-28 04:45:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-01-28 04:45:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-01-28 04:45:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2229 transitions. [2023-01-28 04:45:24,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711288711288711 [2023-01-28 04:45:24,319 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2229 transitions. [2023-01-28 04:45:24,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2229 transitions. [2023-01-28 04:45:24,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:24,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2229 transitions. [2023-01-28 04:45:24,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 101.31818181818181) internal successors, (2229), 22 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:24,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:24,327 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 273.0) internal successors, (6279), 23 states have internal predecessors, (6279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:24,327 INFO L175 Difference]: Start difference. First operand has 212 places, 529 transitions, 7429 flow. Second operand 22 states and 2229 transitions. [2023-01-28 04:45:24,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 745 transitions, 11506 flow [2023-01-28 04:45:24,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 745 transitions, 11338 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 04:45:24,548 INFO L231 Difference]: Finished difference. Result has 226 places, 569 transitions, 8363 flow [2023-01-28 04:45:24,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=7261, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8363, PETRI_PLACES=226, PETRI_TRANSITIONS=569} [2023-01-28 04:45:24,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2023-01-28 04:45:24,549 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 569 transitions, 8363 flow [2023-01-28 04:45:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 96.05) internal successors, (1921), 20 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:24,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:24,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:24,554 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 04:45:24,750 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 04:45:24,750 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 04:45:24,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:24,750 INFO L85 PathProgramCache]: Analyzing trace with hash -358518301, now seen corresponding path program 17 times [2023-01-28 04:45:24,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:24,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584819921] [2023-01-28 04:45:24,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:24,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:24,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584819921] [2023-01-28 04:45:24,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584819921] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:24,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589783151] [2023-01-28 04:45:24,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:45:24,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:24,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:24,874 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 04:45:24,876 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 04:45:24,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:45:24,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:24,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:45:24,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:25,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:25,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589783151] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:25,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:25,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2023-01-28 04:45:25,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779605815] [2023-01-28 04:45:25,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:25,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:45:25,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:25,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:45:25,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:45:25,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 273 [2023-01-28 04:45:25,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 569 transitions, 8363 flow. Second operand has 19 states, 19 states have (on average 96.63157894736842) internal successors, (1836), 19 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:25,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:25,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 273 [2023-01-28 04:45:25,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:26,979 INFO L130 PetriNetUnfolder]: 3012/4420 cut-off events. [2023-01-28 04:45:26,980 INFO L131 PetriNetUnfolder]: For 50815/50815 co-relation queries the response was YES. [2023-01-28 04:45:27,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36309 conditions, 4420 events. 3012/4420 cut-off events. For 50815/50815 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 21177 event pairs, 139 based on Foata normal form. 28/4448 useless extension candidates. Maximal degree in co-relation 36239. Up to 1770 conditions per place. [2023-01-28 04:45:27,025 INFO L137 encePairwiseOnDemand]: 263/273 looper letters, 440 selfloop transitions, 422 changer transitions 0/862 dead transitions. [2023-01-28 04:45:27,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 862 transitions, 13382 flow [2023-01-28 04:45:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-28 04:45:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-28 04:45:27,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3743 transitions. [2023-01-28 04:45:27,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37055737055737054 [2023-01-28 04:45:27,030 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3743 transitions. [2023-01-28 04:45:27,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3743 transitions. [2023-01-28 04:45:27,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:27,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3743 transitions. [2023-01-28 04:45:27,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 101.16216216216216) internal successors, (3743), 37 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:27,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 273.0) internal successors, (10374), 38 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:27,043 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 273.0) internal successors, (10374), 38 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:27,043 INFO L175 Difference]: Start difference. First operand has 226 places, 569 transitions, 8363 flow. Second operand 37 states and 3743 transitions. [2023-01-28 04:45:27,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 862 transitions, 13382 flow [2023-01-28 04:45:27,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 862 transitions, 13286 flow, removed 24 selfloop flow, removed 6 redundant places. [2023-01-28 04:45:27,287 INFO L231 Difference]: Finished difference. Result has 256 places, 615 transitions, 9770 flow [2023-01-28 04:45:27,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8253, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9770, PETRI_PLACES=256, PETRI_TRANSITIONS=615} [2023-01-28 04:45:27,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2023-01-28 04:45:27,289 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 615 transitions, 9770 flow [2023-01-28 04:45:27,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 96.63157894736842) internal successors, (1836), 19 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:27,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:27,289 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:45:27,296 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 04:45:27,494 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 04:45:27,494 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 04:45:27,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash 164932615, now seen corresponding path program 18 times [2023-01-28 04:45:27,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:27,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018946982] [2023-01-28 04:45:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:27,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018946982] [2023-01-28 04:45:27,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018946982] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:27,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767976265] [2023-01-28 04:45:27,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:45:27,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:27,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:27,606 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 04:45:27,627 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 04:45:27,728 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:45:27,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:27,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:45:27,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:27,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:45:27,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767976265] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:45:27,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:45:27,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-01-28 04:45:27,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720184818] [2023-01-28 04:45:27,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:45:27,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:45:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:45:27,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:45:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:45:27,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 273 [2023-01-28 04:45:27,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 615 transitions, 9770 flow. Second operand has 19 states, 19 states have (on average 99.05263157894737) internal successors, (1882), 19 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:27,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:45:27,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 273 [2023-01-28 04:45:27,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:45:28,829 INFO L130 PetriNetUnfolder]: 2890/4244 cut-off events. [2023-01-28 04:45:28,829 INFO L131 PetriNetUnfolder]: For 53001/53028 co-relation queries the response was YES. [2023-01-28 04:45:28,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36247 conditions, 4244 events. 2890/4244 cut-off events. For 53001/53028 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 20429 event pairs, 382 based on Foata normal form. 36/4267 useless extension candidates. Maximal degree in co-relation 36177. Up to 1965 conditions per place. [2023-01-28 04:45:28,872 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 401 selfloop transitions, 257 changer transitions 0/688 dead transitions. [2023-01-28 04:45:28,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 688 transitions, 11781 flow [2023-01-28 04:45:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:45:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:45:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 940 transitions. [2023-01-28 04:45:28,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38258038258038257 [2023-01-28 04:45:28,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 940 transitions. [2023-01-28 04:45:28,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 940 transitions. [2023-01-28 04:45:28,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:45:28,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 940 transitions. [2023-01-28 04:45:28,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.44444444444444) internal successors, (940), 9 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:28,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:28,876 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:28,876 INFO L175 Difference]: Start difference. First operand has 256 places, 615 transitions, 9770 flow. Second operand 9 states and 940 transitions. [2023-01-28 04:45:28,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 688 transitions, 11781 flow [2023-01-28 04:45:29,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 688 transitions, 11014 flow, removed 42 selfloop flow, removed 15 redundant places. [2023-01-28 04:45:29,125 INFO L231 Difference]: Finished difference. Result has 249 places, 618 transitions, 9810 flow [2023-01-28 04:45:29,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8984, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9810, PETRI_PLACES=249, PETRI_TRANSITIONS=618} [2023-01-28 04:45:29,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2023-01-28 04:45:29,126 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 618 transitions, 9810 flow [2023-01-28 04:45:29,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 99.05263157894737) internal successors, (1882), 19 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:45:29,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:45:29,127 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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 04:45:29,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-01-28 04:45:29,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-01-28 04:45:29,327 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 04:45:29,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:45:29,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2028378021, now seen corresponding path program 3 times [2023-01-28 04:45:29,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:45:29,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935576004] [2023-01-28 04:45:29,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:45:29,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:45:29,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:45:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:45:30,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:45:30,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935576004] [2023-01-28 04:45:30,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935576004] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:45:30,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140564535] [2023-01-28 04:45:30,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:45:30,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:45:30,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:45:30,569 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:45:30,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 04:45:30,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:45:30,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:45:30,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 54 conjunts are in the unsatisfiable core [2023-01-28 04:45:30,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:45:30,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:45:30,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-01-28 04:45:31,289 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 90 treesize of output 72 [2023-01-28 04:45:31,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:45:31,500 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 90 treesize of output 72 [2023-01-28 04:45:32,449 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:32,449 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 147 treesize of output 89 [2023-01-28 04:45:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:45:32,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:45:33,559 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1060 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (let ((.cse0 (select .cse2 c_~A~0.offset))) (or (<= c_~min2~0 .cse0) (forall ((v_thread3Thread1of1ForFork0_~i~2_107 Int)) (let ((.cse1 (select .cse2 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))))) (or (= c_~min1~0 .cse1) (<= .cse0 .cse1) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107)))))))) (forall ((v_ArrVal_1060 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (let ((.cse3 (select .cse4 c_~A~0.offset))) (or (= c_~min1~0 .cse3) (<= c_~min2~0 .cse3) (forall ((v_thread3Thread1of1ForFork0_~i~2_107 Int)) (or (< (select .cse4 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))) .cse3) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107))))))) (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_1060 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_107 Int)) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (or (< (select .cse5 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))) c_~min2~0) (< (select .cse5 c_~A~0.offset) c_~min2~0) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107))))) (forall ((v_ArrVal_1060 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_107 Int)) (let ((.cse6 (select .cse7 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))))) (or (<= c_~min2~0 .cse6) (= c_~min1~0 .cse6) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107)))) (< (select .cse7 c_~A~0.offset) c_~min2~0))))) is different from false [2023-01-28 04:45:33,735 WARN L839 $PredicateComparison]: unable to prove that (and (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_107 Int)) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (or (< (select .cse0 c_~A~0.offset) c_~min2~0) (< (select .cse0 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))) c_~min2~0) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107))))) (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (let ((.cse1 (select .cse3 c_~A~0.offset))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_107 Int)) (let ((.cse2 (select .cse3 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))))) (or (<= .cse1 .cse2) (= c_~min1~0 .cse2) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107)))) (<= c_~min2~0 .cse1))))) (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int))) (let ((.cse5 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_107 Int)) (let ((.cse4 (select .cse5 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))))) (or (= c_~min1~0 .cse4) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107) (<= c_~min2~0 .cse4)))) (< (select .cse5 c_~A~0.offset) c_~min2~0)))) (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060) c_~A~0.base))) (let ((.cse6 (select .cse7 c_~A~0.offset))) (or (<= c_~min2~0 .cse6) (forall ((v_thread3Thread1of1ForFork0_~i~2_107 Int)) (or (< (select .cse7 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_107 4))) .cse6) (< (+ v_thread3Thread1of1ForFork0_~i~2_107 1) c_~N~0) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_107))) (= c_~min1~0 .cse6)))))) is different from false [2023-01-28 04:45:34,903 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:34,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 2348 treesize of output 2351 [2023-01-28 04:45:35,306 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:35,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1291 treesize of output 1284 [2023-01-28 04:45:35,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:35,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1275 treesize of output 1276 [2023-01-28 04:45:35,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:35,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1267 treesize of output 1264 [2023-01-28 04:45:35,784 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:35,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1255 treesize of output 1232 [2023-01-28 04:45:35,916 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:35,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1223 treesize of output 1216 [2023-01-28 04:45:36,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:36,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1207 treesize of output 1202 [2023-01-28 04:45:36,249 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:36,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1193 treesize of output 1174 [2023-01-28 04:45:36,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:36,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1165 treesize of output 1150 [2023-01-28 04:45:36,485 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-28 04:45:36,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:36,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1141 treesize of output 1122 [2023-01-28 04:45:36,656 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:36,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1113 treesize of output 1108 [2023-01-28 04:45:36,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:36,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1100 [2023-01-28 04:45:36,909 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:36,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1091 treesize of output 1084 [2023-01-28 04:45:37,038 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:37,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1075 treesize of output 1052 [2023-01-28 04:45:37,185 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:37,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1043 treesize of output 1040 [2023-01-28 04:45:37,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:37,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1031 treesize of output 1024 [2023-01-28 04:45:37,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:45:37,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1015 treesize of output 1000 [2023-01-28 04:50:56,463 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-01-28 04:53:56,730 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. Received shutdown request... [2023-01-28 04:57:59,320 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:57:59,320 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 04:57:59,427 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 04:57:59,429 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:57:59,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-01-28 04:57:59,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:57:59,630 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 98ms.. [2023-01-28 04:57:59,631 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:57:59,631 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:57:59,631 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:57:59,631 INFO L445 BasicCegarLoop]: Path program histogram: [18, 3, 1, 1, 1] [2023-01-28 04:57:59,634 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:57:59,634 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:57:59,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:57:59 BasicIcfg [2023-01-28 04:57:59,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:57:59,636 INFO L158 Benchmark]: Toolchain (without parser) took 829777.04ms. Allocated memory was 377.5MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 336.5MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-01-28 04:57:59,636 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:57:59,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.51ms. Allocated memory is still 377.5MB. Free memory was 336.2MB in the beginning and 324.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 04:57:59,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.15ms. Allocated memory is still 377.5MB. Free memory was 324.7MB in the beginning and 323.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:57:59,637 INFO L158 Benchmark]: Boogie Preprocessor took 25.01ms. Allocated memory is still 377.5MB. Free memory was 323.1MB in the beginning and 321.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:57:59,637 INFO L158 Benchmark]: RCFGBuilder took 577.90ms. Allocated memory is still 377.5MB. Free memory was 321.2MB in the beginning and 300.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 04:57:59,637 INFO L158 Benchmark]: TraceAbstraction took 828884.47ms. Allocated memory was 377.5MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 299.9MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-01-28 04:57:59,638 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 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 251.51ms. Allocated memory is still 377.5MB. Free memory was 336.2MB in the beginning and 324.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.15ms. Allocated memory is still 377.5MB. Free memory was 324.7MB in the beginning and 323.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.01ms. Allocated memory is still 377.5MB. Free memory was 323.1MB in the beginning and 321.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 577.90ms. Allocated memory is still 377.5MB. Free memory was 321.2MB in the beginning and 300.5MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 828884.47ms. Allocated memory was 377.5MB in the beginning and 6.1GB in the end (delta: 5.8GB). Free memory was 299.9MB in the beginning and 2.0GB in the end (delta: -1.7GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 129 PlacesBefore, 30 PlacesAfterwards, 131 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 8 FixpointIterations, 73 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 129 TotalNumberOfCompositions, 1615 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1511, independent: 1489, independent conditional: 0, independent unconditional: 1489, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 724, independent: 714, independent conditional: 0, independent unconditional: 714, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1511, independent: 775, independent conditional: 0, independent unconditional: 775, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 724, unknown conditional: 0, unknown unconditional: 724] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 98ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 98ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 98ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 98ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 163 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: 828.7s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 49.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 115 mSolverCounterUnknown, 3896 SdHoareTripleChecker+Valid, 8.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3896 mSDsluCounter, 801 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 833 IncrementalHoareTripleChecker+Unchecked, 692 mSDsCounter, 172 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13198 IncrementalHoareTripleChecker+Invalid, 14318 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 172 mSolverCounterUnsat, 109 mSDtfsCounter, 13198 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1446 GetRequests, 764 SyntacticMatches, 38 SemanticMatches, 644 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 5077 ImplicationChecksByTransitivity, 25.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9810occurred in iteration=23, InterpolantAutomatonStates: 381, 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: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 1047 NumberOfCodeBlocks, 1036 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 1485 ConstructedInterpolants, 15 QuantifiedInterpolants, 14012 SizeOfPredicates, 216 NumberOfNonLiveVariables, 4454 ConjunctsInSsa, 366 ConjunctsInUnsatCore, 65 InterpolantComputations, 3 PerfectInterpolantSequences, 153/307 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