/usr/bin/java -Xmx8000000000 -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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:49:24,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:49:24,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:49:24,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:49:24,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:49:24,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:49:24,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:49:24,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:49:24,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:49:24,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:49:24,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:49:24,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:49:24,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:49:24,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:49:24,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:49:24,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:49:24,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:49:24,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:49:24,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:49:24,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:49:24,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:49:24,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:49:24,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:49:24,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:49:24,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 21:49:24,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:49:24,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:49:24,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:49:24,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:49:24,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:49:24,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:49:24,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:49:24,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:49:24,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:49:24,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:49:24,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:49:24,936 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-SemanticLbe.epf [2022-12-05 21:49:24,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:49:24,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:49:24,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:49:24,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:49:24,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:49:24,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:49:24,959 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:49:24,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:49:24,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:49:24,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:49:24,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:49:24,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:49:24,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:49:24,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:49:24,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:49:24,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:49:25,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:49:25,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:49:25,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:49:25,233 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:49:25,234 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:49:25,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2022-12-05 21:49:26,018 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:49:26,170 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:49:26,170 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2022-12-05 21:49:26,174 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19afa6fb4/f0bee10b29f54f52946b8d0611c51694/FLAG7865b7004 [2022-12-05 21:49:26,184 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19afa6fb4/f0bee10b29f54f52946b8d0611c51694 [2022-12-05 21:49:26,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:49:26,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:49:26,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:49:26,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:49:26,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:49:26,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231a109f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26, skipping insertion in model container [2022-12-05 21:49:26,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:49:26,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:49:26,301 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:49:26,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:49:26,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:49:26,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:49:26,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:49:26,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:49:26,323 WARN L237 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-max-array.wvr.c[2553,2566] [2022-12-05 21:49:26,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:49:26,347 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:49:26,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:49:26,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:49:26,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:49:26,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:49:26,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:49:26,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:49:26,379 WARN L237 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-max-array.wvr.c[2553,2566] [2022-12-05 21:49:26,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:49:26,394 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:49:26,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26 WrapperNode [2022-12-05 21:49:26,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:49:26,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:49:26,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:49:26,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:49:26,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,434 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2022-12-05 21:49:26,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:49:26,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:49:26,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:49:26,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:49:26,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:49:26,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:49:26,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:49:26,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:49:26,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (1/1) ... [2022-12-05 21:49:26,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:49:26,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:26,494 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) [2022-12-05 21:49:26,506 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 [2022-12-05 21:49:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:49:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:49:26,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:49:26,543 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:49:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:49:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:49:26,544 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:49:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:49:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:49:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:49:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:49:26,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:49:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 21:49:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:49:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:49:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:49:26,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:49:26,546 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:49:26,635 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:49:26,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:49:26,860 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:49:26,895 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:49:26,895 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-05 21:49:26,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:49:26 BoogieIcfgContainer [2022-12-05 21:49:26,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:49:26,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:49:26,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:49:26,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:49:26,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:49:26" (1/3) ... [2022-12-05 21:49:26,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6703c476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:49:26, skipping insertion in model container [2022-12-05 21:49:26,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:49:26" (2/3) ... [2022-12-05 21:49:26,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6703c476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:49:26, skipping insertion in model container [2022-12-05 21:49:26,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:49:26" (3/3) ... [2022-12-05 21:49:26,902 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2022-12-05 21:49:26,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:49:26,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:49:26,914 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:49:26,964 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 21:49:26,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 141 transitions, 306 flow [2022-12-05 21:49:27,037 INFO L130 PetriNetUnfolder]: 12/138 cut-off events. [2022-12-05 21:49:27,037 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:49:27,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 138 events. 12/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-05 21:49:27,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 141 transitions, 306 flow [2022-12-05 21:49:27,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 128 transitions, 274 flow [2022-12-05 21:49:27,051 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:49:27,071 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 128 transitions, 274 flow [2022-12-05 21:49:27,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 128 transitions, 274 flow [2022-12-05 21:49:27,110 INFO L130 PetriNetUnfolder]: 12/128 cut-off events. [2022-12-05 21:49:27,111 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:49:27,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 12/128 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 91 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-05 21:49:27,113 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 128 transitions, 274 flow [2022-12-05 21:49:27,113 INFO L188 LiptonReduction]: Number of co-enabled transitions 1320 [2022-12-05 21:49:31,515 INFO L203 LiptonReduction]: Total number of compositions: 104 [2022-12-05 21:49:31,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:49:31,530 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;@60445f38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:49:31,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 21:49:31,534 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2022-12-05 21:49:31,534 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:49:31,535 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:31,538 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:49:31,538 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)] === [2022-12-05 21:49:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash -833214972, now seen corresponding path program 1 times [2022-12-05 21:49:31,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:31,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122254001] [2022-12-05 21:49:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:31,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:31,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122254001] [2022-12-05 21:49:31,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122254001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:49:31,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:49:31,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 21:49:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86220286] [2022-12-05 21:49:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:49:31,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 21:49:31,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:31,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 21:49:31,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 21:49:31,991 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-05 21:49:31,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:31,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:31,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-05 21:49:31,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:32,078 INFO L130 PetriNetUnfolder]: 265/372 cut-off events. [2022-12-05 21:49:32,078 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-05 21:49:32,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 372 events. 265/372 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1070 event pairs, 132 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 606. Up to 368 conditions per place. [2022-12-05 21:49:32,083 INFO L137 encePairwiseOnDemand]: 21/24 looper letters, 21 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2022-12-05 21:49:32,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 114 flow [2022-12-05 21:49:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 21:49:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 21:49:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2022-12-05 21:49:32,092 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2022-12-05 21:49:32,093 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 30 transitions. [2022-12-05 21:49:32,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 114 flow [2022-12-05 21:49:32,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 21:49:32,097 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2022-12-05 21:49:32,099 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2022-12-05 21:49:32,101 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2022-12-05 21:49:32,102 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2022-12-05 21:49:32,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:32,102 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:32,102 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:49:32,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:49:32,103 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)] === [2022-12-05 21:49:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:32,105 INFO L85 PathProgramCache]: Analyzing trace with hash 432676337, now seen corresponding path program 1 times [2022-12-05 21:49:32,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:32,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694828914] [2022-12-05 21:49:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:32,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:32,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:32,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694828914] [2022-12-05 21:49:32,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694828914] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:32,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621225845] [2022-12-05 21:49:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:32,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:32,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:32,249 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) [2022-12-05 21:49:32,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 21:49:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:32,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-05 21:49:32,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:32,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:32,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621225845] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:32,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 21:49:32,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-12-05 21:49:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132616096] [2022-12-05 21:49:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:49:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:49:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:32,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:49:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:49:32,408 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-05 21:49:32,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:32,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:32,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-05 21:49:32,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:32,503 INFO L130 PetriNetUnfolder]: 309/442 cut-off events. [2022-12-05 21:49:32,503 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 21:49:32,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 442 events. 309/442 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1396 event pairs, 50 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 889. Up to 335 conditions per place. [2022-12-05 21:49:32,507 INFO L137 encePairwiseOnDemand]: 19/24 looper letters, 29 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2022-12-05 21:49:32,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 154 flow [2022-12-05 21:49:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:49:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:49:32,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2022-12-05 21:49:32,510 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2022-12-05 21:49:32,510 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 44 transitions. [2022-12-05 21:49:32,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 154 flow [2022-12-05 21:49:32,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-05 21:49:32,511 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 78 flow [2022-12-05 21:49:32,511 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2022-12-05 21:49:32,512 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2022-12-05 21:49:32,512 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 78 flow [2022-12-05 21:49:32,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:32,514 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:32,514 INFO L213 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] [2022-12-05 21:49:32,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 21:49:32,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:32,722 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)] === [2022-12-05 21:49:32,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:32,722 INFO L85 PathProgramCache]: Analyzing trace with hash 762512851, now seen corresponding path program 1 times [2022-12-05 21:49:32,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:32,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328027403] [2022-12-05 21:49:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:32,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:32,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:32,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328027403] [2022-12-05 21:49:32,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328027403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:32,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244677430] [2022-12-05 21:49:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:32,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:32,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:32,820 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) [2022-12-05 21:49:32,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 21:49:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:32,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:49:32,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:32,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:33,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244677430] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:33,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 21:49:33,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2022-12-05 21:49:33,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613749288] [2022-12-05 21:49:33,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:49:33,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 21:49:33,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:33,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 21:49:33,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-05 21:49:33,049 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:33,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:33,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:33,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:33,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:33,192 INFO L130 PetriNetUnfolder]: 409/609 cut-off events. [2022-12-05 21:49:33,192 INFO L131 PetriNetUnfolder]: For 106/151 co-relation queries the response was YES. [2022-12-05 21:49:33,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 609 events. 409/609 cut-off events. For 106/151 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2024 event pairs, 138 based on Foata normal form. 45/485 useless extension candidates. Maximal degree in co-relation 1407. Up to 345 conditions per place. [2022-12-05 21:49:33,195 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 52 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2022-12-05 21:49:33,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 300 flow [2022-12-05 21:49:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:49:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:49:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2022-12-05 21:49:33,197 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2022-12-05 21:49:33,197 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 78 flow. Second operand 7 states and 65 transitions. [2022-12-05 21:49:33,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 300 flow [2022-12-05 21:49:33,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 283 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-05 21:49:33,199 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 120 flow [2022-12-05 21:49:33,199 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=120, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2022-12-05 21:49:33,199 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2022-12-05 21:49:33,199 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 120 flow [2022-12-05 21:49:33,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:33,199 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:33,200 INFO L213 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] [2022-12-05 21:49:33,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:33,404 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,SelfDestructingSolverStorable2 [2022-12-05 21:49:33,405 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)] === [2022-12-05 21:49:33,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1818408007, now seen corresponding path program 2 times [2022-12-05 21:49:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:33,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189212174] [2022-12-05 21:49:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:33,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:33,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:33,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189212174] [2022-12-05 21:49:33,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189212174] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:33,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883998733] [2022-12-05 21:49:33,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:49:33,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:33,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:33,487 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) [2022-12-05 21:49:33,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 21:49:33,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 21:49:33,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:33,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-05 21:49:33,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 21:49:33,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 21:49:33,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883998733] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:49:33,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 21:49:33,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2022-12-05 21:49:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539387067] [2022-12-05 21:49:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:49:33,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 21:49:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:33,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 21:49:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-05 21:49:33,618 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-05 21:49:33,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:33,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:33,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-05 21:49:33,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:33,690 INFO L130 PetriNetUnfolder]: 312/464 cut-off events. [2022-12-05 21:49:33,690 INFO L131 PetriNetUnfolder]: For 223/252 co-relation queries the response was YES. [2022-12-05 21:49:33,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 464 events. 312/464 cut-off events. For 223/252 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1482 event pairs, 119 based on Foata normal form. 55/416 useless extension candidates. Maximal degree in co-relation 1317. Up to 330 conditions per place. [2022-12-05 21:49:33,693 INFO L137 encePairwiseOnDemand]: 20/24 looper letters, 34 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2022-12-05 21:49:33,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 228 flow [2022-12-05 21:49:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 21:49:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 21:49:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 41 transitions. [2022-12-05 21:49:33,694 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2022-12-05 21:49:33,694 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 120 flow. Second operand 4 states and 41 transitions. [2022-12-05 21:49:33,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 228 flow [2022-12-05 21:49:33,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 217 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-05 21:49:33,696 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 125 flow [2022-12-05 21:49:33,696 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2022-12-05 21:49:33,696 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2022-12-05 21:49:33,696 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 125 flow [2022-12-05 21:49:33,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:33,697 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:33,697 INFO L213 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] [2022-12-05 21:49:33,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:33,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:33,904 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)] === [2022-12-05 21:49:33,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:33,904 INFO L85 PathProgramCache]: Analyzing trace with hash 94706180, now seen corresponding path program 1 times [2022-12-05 21:49:33,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:33,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540872727] [2022-12-05 21:49:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:33,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:34,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540872727] [2022-12-05 21:49:34,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540872727] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:34,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533297814] [2022-12-05 21:49:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:34,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:34,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:34,739 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) [2022-12-05 21:49:34,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 21:49:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:34,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-05 21:49:34,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:35,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:49:35,039 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 35 treesize of output 33 [2022-12-05 21:49:35,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 21:49:35,096 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 35 treesize of output 33 [2022-12-05 21:49:35,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-05 21:49:35,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:49:35,211 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 66 treesize of output 39 [2022-12-05 21:49:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:35,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:35,397 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_198 (Array Int Int))) (< c_~max2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_198) c_~A~0.base) .cse0)))) (forall ((v_ArrVal_198 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_198) c_~A~0.base) .cse0))) (or (= c_~max1~0 .cse1) (not (< c_~max2~0 .cse1))))))) is different from false [2022-12-05 21:49:35,434 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_197 (Array Int Int)) (v_ArrVal_198 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_197) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_198) c_~A~0.base) .cse1))) (or (= c_~max1~0 .cse0) (not (< c_~max2~0 .cse0))))) (or (= c_~max1~0 c_~max2~0) (forall ((v_ArrVal_197 (Array Int Int)) (v_ArrVal_198 (Array Int Int))) (< c_~max2~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_197) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_198) c_~A~0.base) .cse1)))))) is different from false [2022-12-05 21:49:35,456 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:49:35,456 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 259 treesize of output 223 [2022-12-05 21:49:35,461 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 188 treesize of output 176 [2022-12-05 21:49:35,473 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 176 treesize of output 170 [2022-12-05 21:49:35,481 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 170 treesize of output 146 [2022-12-05 21:49:35,486 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 146 treesize of output 134 [2022-12-05 21:49:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:35,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533297814] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:35,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:35,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2022-12-05 21:49:35,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935678409] [2022-12-05 21:49:35,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-05 21:49:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:35,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-05 21:49:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=548, Unknown=2, NotChecked=98, Total=756 [2022-12-05 21:49:35,746 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:35,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 125 flow. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:35,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:35,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:35,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:36,581 INFO L130 PetriNetUnfolder]: 913/1339 cut-off events. [2022-12-05 21:49:36,581 INFO L131 PetriNetUnfolder]: For 1311/1327 co-relation queries the response was YES. [2022-12-05 21:49:36,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 1339 events. 913/1339 cut-off events. For 1311/1327 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5522 event pairs, 82 based on Foata normal form. 18/1102 useless extension candidates. Maximal degree in co-relation 3158. Up to 749 conditions per place. [2022-12-05 21:49:36,588 INFO L137 encePairwiseOnDemand]: 14/24 looper letters, 95 selfloop transitions, 48 changer transitions 4/149 dead transitions. [2022-12-05 21:49:36,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 149 transitions, 880 flow [2022-12-05 21:49:36,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 21:49:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 21:49:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2022-12-05 21:49:36,590 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2022-12-05 21:49:36,590 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 125 flow. Second operand 12 states and 130 transitions. [2022-12-05 21:49:36,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 149 transitions, 880 flow [2022-12-05 21:49:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 149 transitions, 804 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-05 21:49:36,595 INFO L231 Difference]: Finished difference. Result has 52 places, 78 transitions, 455 flow [2022-12-05 21:49:36,595 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=455, PETRI_PLACES=52, PETRI_TRANSITIONS=78} [2022-12-05 21:49:36,595 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2022-12-05 21:49:36,595 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 78 transitions, 455 flow [2022-12-05 21:49:36,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 28 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:36,596 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:36,596 INFO L213 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] [2022-12-05 21:49:36,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:36,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:36,801 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)] === [2022-12-05 21:49:36,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:36,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2016180092, now seen corresponding path program 2 times [2022-12-05 21:49:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:36,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429532445] [2022-12-05 21:49:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:36,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:37,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429532445] [2022-12-05 21:49:37,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429532445] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:37,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869627958] [2022-12-05 21:49:37,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:49:37,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:37,311 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) [2022-12-05 21:49:37,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 21:49:37,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:49:37,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:37,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-05 21:49:37,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:37,622 INFO L321 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2022-12-05 21:49:37,622 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 75 treesize of output 65 [2022-12-05 21:49:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:37,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:37,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:49:37,729 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 87 treesize of output 51 [2022-12-05 21:49:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:37,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869627958] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:37,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:37,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 22 [2022-12-05 21:49:37,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015111436] [2022-12-05 21:49:37,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:37,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-05 21:49:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-05 21:49:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-12-05 21:49:37,940 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:49:37,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 78 transitions, 455 flow. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:37,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:37,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:49:37,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:38,912 INFO L130 PetriNetUnfolder]: 1275/1867 cut-off events. [2022-12-05 21:49:38,913 INFO L131 PetriNetUnfolder]: For 2630/2630 co-relation queries the response was YES. [2022-12-05 21:49:38,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6786 conditions, 1867 events. 1275/1867 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7342 event pairs, 265 based on Foata normal form. 1/1867 useless extension candidates. Maximal degree in co-relation 6524. Up to 1451 conditions per place. [2022-12-05 21:49:38,921 INFO L137 encePairwiseOnDemand]: 12/24 looper letters, 119 selfloop transitions, 84 changer transitions 1/204 dead transitions. [2022-12-05 21:49:38,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 204 transitions, 1429 flow [2022-12-05 21:49:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-05 21:49:38,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-05 21:49:38,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 146 transitions. [2022-12-05 21:49:38,924 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.2644927536231884 [2022-12-05 21:49:38,924 INFO L175 Difference]: Start difference. First operand has 52 places, 78 transitions, 455 flow. Second operand 23 states and 146 transitions. [2022-12-05 21:49:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 204 transitions, 1429 flow [2022-12-05 21:49:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 204 transitions, 1417 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-05 21:49:38,934 INFO L231 Difference]: Finished difference. Result has 85 places, 144 transitions, 1113 flow [2022-12-05 21:49:38,934 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1113, PETRI_PLACES=85, PETRI_TRANSITIONS=144} [2022-12-05 21:49:38,939 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2022-12-05 21:49:38,939 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 144 transitions, 1113 flow [2022-12-05 21:49:38,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 23 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:38,939 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:38,939 INFO L213 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] [2022-12-05 21:49:38,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:39,140 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)] === [2022-12-05 21:49:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 515105554, now seen corresponding path program 3 times [2022-12-05 21:49:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349099317] [2022-12-05 21:49:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:39,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349099317] [2022-12-05 21:49:39,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349099317] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:39,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504714258] [2022-12-05 21:49:39,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:49:39,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:39,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:39,599 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) [2022-12-05 21:49:39,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 21:49:39,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-05 21:49:39,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:39,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-05 21:49:39,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:39,904 INFO L321 Elim1Store]: treesize reduction 12, result has 63.6 percent of original size [2022-12-05 21:49:39,905 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 75 treesize of output 65 [2022-12-05 21:49:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:39,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:40,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:49:40,036 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 87 treesize of output 51 [2022-12-05 21:49:40,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:40,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504714258] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:40,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:40,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2022-12-05 21:49:40,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348225582] [2022-12-05 21:49:40,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:40,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-05 21:49:40,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:40,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-05 21:49:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-12-05 21:49:40,180 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:40,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 144 transitions, 1113 flow. Second operand has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:40,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:40,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:40,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:40,845 INFO L130 PetriNetUnfolder]: 1277/1889 cut-off events. [2022-12-05 21:49:40,845 INFO L131 PetriNetUnfolder]: For 5601/5654 co-relation queries the response was YES. [2022-12-05 21:49:40,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8264 conditions, 1889 events. 1277/1889 cut-off events. For 5601/5654 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8090 event pairs, 267 based on Foata normal form. 29/1859 useless extension candidates. Maximal degree in co-relation 8000. Up to 1507 conditions per place. [2022-12-05 21:49:40,858 INFO L137 encePairwiseOnDemand]: 15/24 looper letters, 115 selfloop transitions, 68 changer transitions 1/196 dead transitions. [2022-12-05 21:49:40,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 196 transitions, 1743 flow [2022-12-05 21:49:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 21:49:40,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 21:49:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2022-12-05 21:49:40,860 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2022-12-05 21:49:40,860 INFO L175 Difference]: Start difference. First operand has 85 places, 144 transitions, 1113 flow. Second operand 10 states and 97 transitions. [2022-12-05 21:49:40,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 196 transitions, 1743 flow [2022-12-05 21:49:40,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 196 transitions, 1683 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-12-05 21:49:40,873 INFO L231 Difference]: Finished difference. Result has 95 places, 154 transitions, 1349 flow [2022-12-05 21:49:40,873 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1349, PETRI_PLACES=95, PETRI_TRANSITIONS=154} [2022-12-05 21:49:40,873 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2022-12-05 21:49:40,873 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 154 transitions, 1349 flow [2022-12-05 21:49:40,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:40,874 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:40,874 INFO L213 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] [2022-12-05 21:49:40,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:41,079 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)] === [2022-12-05 21:49:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash 804785588, now seen corresponding path program 4 times [2022-12-05 21:49:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34878547] [2022-12-05 21:49:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:41,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:41,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:41,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34878547] [2022-12-05 21:49:41,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34878547] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:41,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077402141] [2022-12-05 21:49:41,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 21:49:41,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:41,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:41,445 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) [2022-12-05 21:49:41,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 21:49:41,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 21:49:41,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:41,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-05 21:49:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:41,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:49:41,691 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 85 treesize of output 81 [2022-12-05 21:49:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:41,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:41,971 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:49:41,972 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 75 treesize of output 49 [2022-12-05 21:49:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:42,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077402141] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:42,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:42,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2022-12-05 21:49:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469405234] [2022-12-05 21:49:42,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-05 21:49:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-05 21:49:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-12-05 21:49:42,063 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:49:42,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 154 transitions, 1349 flow. Second operand has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:42,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:42,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:49:42,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:43,971 INFO L130 PetriNetUnfolder]: 1803/2678 cut-off events. [2022-12-05 21:49:43,971 INFO L131 PetriNetUnfolder]: For 8264/8264 co-relation queries the response was YES. [2022-12-05 21:49:43,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12086 conditions, 2678 events. 1803/2678 cut-off events. For 8264/8264 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11721 event pairs, 272 based on Foata normal form. 4/2682 useless extension candidates. Maximal degree in co-relation 11780. Up to 1801 conditions per place. [2022-12-05 21:49:43,988 INFO L137 encePairwiseOnDemand]: 11/24 looper letters, 171 selfloop transitions, 133 changer transitions 18/322 dead transitions. [2022-12-05 21:49:43,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 322 transitions, 2868 flow [2022-12-05 21:49:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-05 21:49:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-05 21:49:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 241 transitions. [2022-12-05 21:49:43,989 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3138020833333333 [2022-12-05 21:49:43,989 INFO L175 Difference]: Start difference. First operand has 95 places, 154 transitions, 1349 flow. Second operand 32 states and 241 transitions. [2022-12-05 21:49:43,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 322 transitions, 2868 flow [2022-12-05 21:49:44,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 322 transitions, 2798 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-12-05 21:49:44,008 INFO L231 Difference]: Finished difference. Result has 133 places, 198 transitions, 2050 flow [2022-12-05 21:49:44,008 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2050, PETRI_PLACES=133, PETRI_TRANSITIONS=198} [2022-12-05 21:49:44,010 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2022-12-05 21:49:44,010 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 198 transitions, 2050 flow [2022-12-05 21:49:44,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.772727272727273) internal successors, (61), 22 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:44,010 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:44,010 INFO L213 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] [2022-12-05 21:49:44,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:44,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:44,216 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)] === [2022-12-05 21:49:44,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:44,216 INFO L85 PathProgramCache]: Analyzing trace with hash -844384012, now seen corresponding path program 5 times [2022-12-05 21:49:44,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:44,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8157936] [2022-12-05 21:49:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:44,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:44,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:44,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8157936] [2022-12-05 21:49:44,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8157936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:44,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325962671] [2022-12-05 21:49:44,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 21:49:44,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:44,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:44,910 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) [2022-12-05 21:49:44,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 21:49:44,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:49:44,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:44,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-05 21:49:44,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:45,222 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 60 treesize of output 36 [2022-12-05 21:49:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:45,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:45,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:49:45,369 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 75 treesize of output 49 [2022-12-05 21:49:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:45,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325962671] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:45,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:45,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 22 [2022-12-05 21:49:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879670634] [2022-12-05 21:49:45,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-05 21:49:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-05 21:49:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-12-05 21:49:45,548 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:45,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 198 transitions, 2050 flow. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:45,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:45,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:45,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:46,831 INFO L130 PetriNetUnfolder]: 1947/2964 cut-off events. [2022-12-05 21:49:46,831 INFO L131 PetriNetUnfolder]: For 15758/15842 co-relation queries the response was YES. [2022-12-05 21:49:46,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15860 conditions, 2964 events. 1947/2964 cut-off events. For 15758/15842 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14563 event pairs, 293 based on Foata normal form. 30/2940 useless extension candidates. Maximal degree in co-relation 15704. Up to 1949 conditions per place. [2022-12-05 21:49:46,856 INFO L137 encePairwiseOnDemand]: 14/24 looper letters, 160 selfloop transitions, 112 changer transitions 4/290 dead transitions. [2022-12-05 21:49:46,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 290 transitions, 3265 flow [2022-12-05 21:49:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-05 21:49:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-05 21:49:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 141 transitions. [2022-12-05 21:49:46,857 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2022-12-05 21:49:46,857 INFO L175 Difference]: Start difference. First operand has 133 places, 198 transitions, 2050 flow. Second operand 15 states and 141 transitions. [2022-12-05 21:49:46,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 290 transitions, 3265 flow [2022-12-05 21:49:46,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 290 transitions, 2900 flow, removed 127 selfloop flow, removed 17 redundant places. [2022-12-05 21:49:46,896 INFO L231 Difference]: Finished difference. Result has 135 places, 232 transitions, 2457 flow [2022-12-05 21:49:46,896 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2457, PETRI_PLACES=135, PETRI_TRANSITIONS=232} [2022-12-05 21:49:46,896 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2022-12-05 21:49:46,896 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 232 transitions, 2457 flow [2022-12-05 21:49:46,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:46,897 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:46,897 INFO L213 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] [2022-12-05 21:49:46,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:47,098 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,SelfDestructingSolverStorable8 [2022-12-05 21:49:47,099 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)] === [2022-12-05 21:49:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:47,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1224660712, now seen corresponding path program 6 times [2022-12-05 21:49:47,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:47,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008929777] [2022-12-05 21:49:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:47,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008929777] [2022-12-05 21:49:47,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008929777] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233917320] [2022-12-05 21:49:47,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 21:49:47,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:47,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:47,165 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) [2022-12-05 21:49:47,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-05 21:49:47,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-05 21:49:47,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:47,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:49:47,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:47,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:47,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233917320] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:47,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:47,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-12-05 21:49:47,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865371919] [2022-12-05 21:49:47,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:47,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 21:49:47,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 21:49:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-12-05 21:49:47,318 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-05 21:49:47,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 232 transitions, 2457 flow. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:47,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:47,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-05 21:49:47,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:47,753 INFO L130 PetriNetUnfolder]: 1866/2970 cut-off events. [2022-12-05 21:49:47,753 INFO L131 PetriNetUnfolder]: For 22113/22291 co-relation queries the response was YES. [2022-12-05 21:49:47,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16433 conditions, 2970 events. 1866/2970 cut-off events. For 22113/22291 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 15907 event pairs, 475 based on Foata normal form. 261/3139 useless extension candidates. Maximal degree in co-relation 16313. Up to 1517 conditions per place. [2022-12-05 21:49:47,776 INFO L137 encePairwiseOnDemand]: 18/24 looper letters, 231 selfloop transitions, 35 changer transitions 3/289 dead transitions. [2022-12-05 21:49:47,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 289 transitions, 3482 flow [2022-12-05 21:49:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:49:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:49:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2022-12-05 21:49:47,777 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2022-12-05 21:49:47,777 INFO L175 Difference]: Start difference. First operand has 135 places, 232 transitions, 2457 flow. Second operand 8 states and 88 transitions. [2022-12-05 21:49:47,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 289 transitions, 3482 flow [2022-12-05 21:49:47,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 289 transitions, 3189 flow, removed 104 selfloop flow, removed 10 redundant places. [2022-12-05 21:49:47,820 INFO L231 Difference]: Finished difference. Result has 134 places, 210 transitions, 2169 flow [2022-12-05 21:49:47,820 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2169, PETRI_PLACES=134, PETRI_TRANSITIONS=210} [2022-12-05 21:49:47,820 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2022-12-05 21:49:47,821 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 210 transitions, 2169 flow [2022-12-05 21:49:47,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:47,821 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:47,821 INFO L213 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] [2022-12-05 21:49:47,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:48,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-05 21:49:48,026 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)] === [2022-12-05 21:49:48,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1808079463, now seen corresponding path program 7 times [2022-12-05 21:49:48,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:48,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324858148] [2022-12-05 21:49:48,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:48,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:48,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324858148] [2022-12-05 21:49:48,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324858148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:48,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318677843] [2022-12-05 21:49:48,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 21:49:48,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:48,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:48,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 21:49:48,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-05 21:49:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:48,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:49:48,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:48,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:49:48,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318677843] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:48,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:48,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-12-05 21:49:48,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204187024] [2022-12-05 21:49:48,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:48,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-05 21:49:48,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:48,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-05 21:49:48,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-12-05 21:49:48,334 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:48,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 210 transitions, 2169 flow. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:48,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:48,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:48,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:49,115 INFO L130 PetriNetUnfolder]: 2379/3735 cut-off events. [2022-12-05 21:49:49,116 INFO L131 PetriNetUnfolder]: For 21814/22003 co-relation queries the response was YES. [2022-12-05 21:49:49,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20030 conditions, 3735 events. 2379/3735 cut-off events. For 21814/22003 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19638 event pairs, 812 based on Foata normal form. 189/3916 useless extension candidates. Maximal degree in co-relation 19747. Up to 2165 conditions per place. [2022-12-05 21:49:49,145 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 324 selfloop transitions, 50 changer transitions 0/388 dead transitions. [2022-12-05 21:49:49,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 388 transitions, 4338 flow [2022-12-05 21:49:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 21:49:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 21:49:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 195 transitions. [2022-12-05 21:49:49,146 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2022-12-05 21:49:49,146 INFO L175 Difference]: Start difference. First operand has 134 places, 210 transitions, 2169 flow. Second operand 18 states and 195 transitions. [2022-12-05 21:49:49,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 388 transitions, 4338 flow [2022-12-05 21:49:49,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 388 transitions, 4327 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-05 21:49:49,234 INFO L231 Difference]: Finished difference. Result has 158 places, 236 transitions, 2684 flow [2022-12-05 21:49:49,234 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2684, PETRI_PLACES=158, PETRI_TRANSITIONS=236} [2022-12-05 21:49:49,234 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2022-12-05 21:49:49,234 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 236 transitions, 2684 flow [2022-12-05 21:49:49,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:49,237 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:49,237 INFO L213 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] [2022-12-05 21:49:49,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:49,452 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,SelfDestructingSolverStorable10 [2022-12-05 21:49:49,452 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)] === [2022-12-05 21:49:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 155729354, now seen corresponding path program 1 times [2022-12-05 21:49:49,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:49,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521224962] [2022-12-05 21:49:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:49,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:49,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:49,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521224962] [2022-12-05 21:49:49,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521224962] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:49,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001334833] [2022-12-05 21:49:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:49,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:49,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:49,522 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) [2022-12-05 21:49:49,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-05 21:49:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:49,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 21:49:49,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:49,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:49,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001334833] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:49,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:49,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-05 21:49:49,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209487821] [2022-12-05 21:49:49,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:49,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 21:49:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 21:49:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-05 21:49:49,707 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:49,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 236 transitions, 2684 flow. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:49,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:49,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:49,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:50,425 INFO L130 PetriNetUnfolder]: 2511/3953 cut-off events. [2022-12-05 21:49:50,425 INFO L131 PetriNetUnfolder]: For 39688/39881 co-relation queries the response was YES. [2022-12-05 21:49:50,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24867 conditions, 3953 events. 2511/3953 cut-off events. For 39688/39881 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21155 event pairs, 478 based on Foata normal form. 205/4150 useless extension candidates. Maximal degree in co-relation 24537. Up to 1107 conditions per place. [2022-12-05 21:49:50,455 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 258 selfloop transitions, 80 changer transitions 17/369 dead transitions. [2022-12-05 21:49:50,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 369 transitions, 4550 flow [2022-12-05 21:49:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 21:49:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 21:49:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2022-12-05 21:49:50,456 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-05 21:49:50,456 INFO L175 Difference]: Start difference. First operand has 158 places, 236 transitions, 2684 flow. Second operand 12 states and 128 transitions. [2022-12-05 21:49:50,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 369 transitions, 4550 flow [2022-12-05 21:49:50,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 369 transitions, 4435 flow, removed 56 selfloop flow, removed 2 redundant places. [2022-12-05 21:49:50,554 INFO L231 Difference]: Finished difference. Result has 172 places, 254 transitions, 3042 flow [2022-12-05 21:49:50,555 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3042, PETRI_PLACES=172, PETRI_TRANSITIONS=254} [2022-12-05 21:49:50,555 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2022-12-05 21:49:50,555 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 254 transitions, 3042 flow [2022-12-05 21:49:50,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:50,555 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:50,555 INFO L213 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] [2022-12-05 21:49:50,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:50,762 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,SelfDestructingSolverStorable11 [2022-12-05 21:49:50,762 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)] === [2022-12-05 21:49:50,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:50,763 INFO L85 PathProgramCache]: Analyzing trace with hash 240491076, now seen corresponding path program 2 times [2022-12-05 21:49:50,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:50,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253954187] [2022-12-05 21:49:50,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:50,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:50,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253954187] [2022-12-05 21:49:50,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253954187] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220545272] [2022-12-05 21:49:50,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:49:50,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:50,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:50,836 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) [2022-12-05 21:49:50,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-05 21:49:50,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:49:50,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:50,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-05 21:49:50,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:51,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:51,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220545272] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:51,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:51,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 14 [2022-12-05 21:49:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737269856] [2022-12-05 21:49:51,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:51,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 21:49:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 21:49:51,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-05 21:49:51,058 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:51,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 254 transitions, 3042 flow. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:51,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:51,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:51,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:51,624 INFO L130 PetriNetUnfolder]: 1973/3223 cut-off events. [2022-12-05 21:49:51,625 INFO L131 PetriNetUnfolder]: For 39145/39336 co-relation queries the response was YES. [2022-12-05 21:49:51,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20207 conditions, 3223 events. 1973/3223 cut-off events. For 39145/39336 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 17622 event pairs, 337 based on Foata normal form. 377/3596 useless extension candidates. Maximal degree in co-relation 20142. Up to 1205 conditions per place. [2022-12-05 21:49:51,657 INFO L137 encePairwiseOnDemand]: 17/24 looper letters, 220 selfloop transitions, 29 changer transitions 16/277 dead transitions. [2022-12-05 21:49:51,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 277 transitions, 3473 flow [2022-12-05 21:49:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:49:51,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:49:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2022-12-05 21:49:51,658 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.41203703703703703 [2022-12-05 21:49:51,658 INFO L175 Difference]: Start difference. First operand has 172 places, 254 transitions, 3042 flow. Second operand 9 states and 89 transitions. [2022-12-05 21:49:51,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 277 transitions, 3473 flow [2022-12-05 21:49:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 277 transitions, 3330 flow, removed 26 selfloop flow, removed 10 redundant places. [2022-12-05 21:49:51,749 INFO L231 Difference]: Finished difference. Result has 167 places, 188 transitions, 2132 flow [2022-12-05 21:49:51,749 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2132, PETRI_PLACES=167, PETRI_TRANSITIONS=188} [2022-12-05 21:49:51,749 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2022-12-05 21:49:51,749 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 188 transitions, 2132 flow [2022-12-05 21:49:51,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:51,751 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:51,752 INFO L213 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] [2022-12-05 21:49:51,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:51,952 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,SelfDestructingSolverStorable12 [2022-12-05 21:49:51,952 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)] === [2022-12-05 21:49:51,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -641347813, now seen corresponding path program 8 times [2022-12-05 21:49:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:51,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536716894] [2022-12-05 21:49:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:51,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:52,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:52,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536716894] [2022-12-05 21:49:52,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536716894] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229322865] [2022-12-05 21:49:52,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:49:52,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:52,020 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) [2022-12-05 21:49:52,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-05 21:49:52,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:49:52,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:52,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:49:52,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:52,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:52,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229322865] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:52,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:52,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-12-05 21:49:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996781536] [2022-12-05 21:49:52,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-05 21:49:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-05 21:49:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-12-05 21:49:52,188 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-05 21:49:52,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 188 transitions, 2132 flow. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:52,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:52,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-05 21:49:52,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:52,724 INFO L130 PetriNetUnfolder]: 2048/3251 cut-off events. [2022-12-05 21:49:52,724 INFO L131 PetriNetUnfolder]: For 38975/39121 co-relation queries the response was YES. [2022-12-05 21:49:52,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21627 conditions, 3251 events. 2048/3251 cut-off events. For 38975/39121 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17181 event pairs, 772 based on Foata normal form. 160/3322 useless extension candidates. Maximal degree in co-relation 21569. Up to 1277 conditions per place. [2022-12-05 21:49:52,748 INFO L137 encePairwiseOnDemand]: 19/24 looper letters, 219 selfloop transitions, 27 changer transitions 0/272 dead transitions. [2022-12-05 21:49:52,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 272 transitions, 3573 flow [2022-12-05 21:49:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 21:49:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 21:49:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2022-12-05 21:49:52,749 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2022-12-05 21:49:52,749 INFO L175 Difference]: Start difference. First operand has 167 places, 188 transitions, 2132 flow. Second operand 7 states and 78 transitions. [2022-12-05 21:49:52,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 272 transitions, 3573 flow [2022-12-05 21:49:52,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 272 transitions, 3449 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-12-05 21:49:52,815 INFO L231 Difference]: Finished difference. Result has 165 places, 190 transitions, 2153 flow [2022-12-05 21:49:52,815 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2153, PETRI_PLACES=165, PETRI_TRANSITIONS=190} [2022-12-05 21:49:52,816 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2022-12-05 21:49:52,816 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 190 transitions, 2153 flow [2022-12-05 21:49:52,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:52,817 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:52,817 INFO L213 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] [2022-12-05 21:49:52,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:53,022 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,SelfDestructingSolverStorable13 [2022-12-05 21:49:53,022 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)] === [2022-12-05 21:49:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1870557143, now seen corresponding path program 9 times [2022-12-05 21:49:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:53,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025050316] [2022-12-05 21:49:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:53,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:53,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:53,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025050316] [2022-12-05 21:49:53,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025050316] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:53,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757389818] [2022-12-05 21:49:53,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:49:53,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:53,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:53,132 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) [2022-12-05 21:49:53,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-05 21:49:53,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 21:49:53,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:53,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-05 21:49:53,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:53,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757389818] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:53,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:53,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-12-05 21:49:53,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225514921] [2022-12-05 21:49:53,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:53,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 21:49:53,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 21:49:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-05 21:49:53,375 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 24 [2022-12-05 21:49:53,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 190 transitions, 2153 flow. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:53,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:53,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 24 [2022-12-05 21:49:53,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:53,908 INFO L130 PetriNetUnfolder]: 1561/2546 cut-off events. [2022-12-05 21:49:53,908 INFO L131 PetriNetUnfolder]: For 30554/30788 co-relation queries the response was YES. [2022-12-05 21:49:53,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16853 conditions, 2546 events. 1561/2546 cut-off events. For 30554/30788 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13204 event pairs, 400 based on Foata normal form. 317/2821 useless extension candidates. Maximal degree in co-relation 16796. Up to 990 conditions per place. [2022-12-05 21:49:53,932 INFO L137 encePairwiseOnDemand]: 18/24 looper letters, 98 selfloop transitions, 9 changer transitions 92/208 dead transitions. [2022-12-05 21:49:53,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 208 transitions, 2566 flow [2022-12-05 21:49:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 21:49:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 21:49:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2022-12-05 21:49:53,933 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4375 [2022-12-05 21:49:53,933 INFO L175 Difference]: Start difference. First operand has 165 places, 190 transitions, 2153 flow. Second operand 8 states and 84 transitions. [2022-12-05 21:49:53,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 208 transitions, 2566 flow [2022-12-05 21:49:53,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 208 transitions, 2328 flow, removed 42 selfloop flow, removed 13 redundant places. [2022-12-05 21:49:53,999 INFO L231 Difference]: Finished difference. Result has 156 places, 102 transitions, 1086 flow [2022-12-05 21:49:53,999 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1086, PETRI_PLACES=156, PETRI_TRANSITIONS=102} [2022-12-05 21:49:53,999 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2022-12-05 21:49:53,999 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 102 transitions, 1086 flow [2022-12-05 21:49:53,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:53,999 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:54,000 INFO L213 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] [2022-12-05 21:49:54,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:54,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:54,205 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)] === [2022-12-05 21:49:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:54,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1650283985, now seen corresponding path program 10 times [2022-12-05 21:49:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:54,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654243162] [2022-12-05 21:49:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:54,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 21:49:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:54,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654243162] [2022-12-05 21:49:54,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654243162] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:54,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960919699] [2022-12-05 21:49:54,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 21:49:54,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:54,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:54,307 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) [2022-12-05 21:49:54,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-05 21:49:54,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 21:49:54,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:54,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:49:54,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:54,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:54,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:54,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960919699] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:54,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:54,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 16 [2022-12-05 21:49:54,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757253905] [2022-12-05 21:49:54,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:54,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 21:49:54,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 21:49:54,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-12-05 21:49:54,532 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:49:54,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 102 transitions, 1086 flow. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:54,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:54,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:49:54,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:55,188 INFO L130 PetriNetUnfolder]: 1738/2632 cut-off events. [2022-12-05 21:49:55,188 INFO L131 PetriNetUnfolder]: For 31340/31340 co-relation queries the response was YES. [2022-12-05 21:49:55,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18076 conditions, 2632 events. 1738/2632 cut-off events. For 31340/31340 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12020 event pairs, 279 based on Foata normal form. 30/2662 useless extension candidates. Maximal degree in co-relation 18025. Up to 1100 conditions per place. [2022-12-05 21:49:55,209 INFO L137 encePairwiseOnDemand]: 14/24 looper letters, 194 selfloop transitions, 85 changer transitions 0/279 dead transitions. [2022-12-05 21:49:55,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 279 transitions, 3574 flow [2022-12-05 21:49:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 21:49:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 21:49:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 138 transitions. [2022-12-05 21:49:55,220 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3026315789473684 [2022-12-05 21:49:55,220 INFO L175 Difference]: Start difference. First operand has 156 places, 102 transitions, 1086 flow. Second operand 19 states and 138 transitions. [2022-12-05 21:49:55,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 279 transitions, 3574 flow [2022-12-05 21:49:55,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 279 transitions, 2992 flow, removed 175 selfloop flow, removed 27 redundant places. [2022-12-05 21:49:55,325 INFO L231 Difference]: Finished difference. Result has 117 places, 135 transitions, 1506 flow [2022-12-05 21:49:55,326 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1506, PETRI_PLACES=117, PETRI_TRANSITIONS=135} [2022-12-05 21:49:55,327 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2022-12-05 21:49:55,327 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 135 transitions, 1506 flow [2022-12-05 21:49:55,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:55,327 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:55,327 INFO L213 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] [2022-12-05 21:49:55,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:55,531 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,SelfDestructingSolverStorable15 [2022-12-05 21:49:55,532 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)] === [2022-12-05 21:49:55,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:55,532 INFO L85 PathProgramCache]: Analyzing trace with hash 365007695, now seen corresponding path program 11 times [2022-12-05 21:49:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:55,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652430353] [2022-12-05 21:49:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:55,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:55,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:55,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652430353] [2022-12-05 21:49:55,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652430353] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:55,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348073509] [2022-12-05 21:49:55,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 21:49:55,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:55,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:55,619 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) [2022-12-05 21:49:55,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-05 21:49:55,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:49:55,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:55,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:49:55,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:55,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:55,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348073509] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:55,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:55,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2022-12-05 21:49:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719002483] [2022-12-05 21:49:55,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:55,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 21:49:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 21:49:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-12-05 21:49:55,843 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:49:55,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 135 transitions, 1506 flow. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:55,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:55,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:49:55,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:56,564 INFO L130 PetriNetUnfolder]: 1778/2698 cut-off events. [2022-12-05 21:49:56,565 INFO L131 PetriNetUnfolder]: For 27808/27808 co-relation queries the response was YES. [2022-12-05 21:49:56,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18462 conditions, 2698 events. 1778/2698 cut-off events. For 27808/27808 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12389 event pairs, 279 based on Foata normal form. 20/2718 useless extension candidates. Maximal degree in co-relation 18421. Up to 1118 conditions per place. [2022-12-05 21:49:56,582 INFO L137 encePairwiseOnDemand]: 14/24 looper letters, 192 selfloop transitions, 115 changer transitions 0/307 dead transitions. [2022-12-05 21:49:56,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 307 transitions, 3826 flow [2022-12-05 21:49:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-05 21:49:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-05 21:49:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 165 transitions. [2022-12-05 21:49:56,583 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3125 [2022-12-05 21:49:56,583 INFO L175 Difference]: Start difference. First operand has 117 places, 135 transitions, 1506 flow. Second operand 22 states and 165 transitions. [2022-12-05 21:49:56,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 307 transitions, 3826 flow [2022-12-05 21:49:56,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 307 transitions, 3533 flow, removed 83 selfloop flow, removed 10 redundant places. [2022-12-05 21:49:56,631 INFO L231 Difference]: Finished difference. Result has 140 places, 179 transitions, 2300 flow [2022-12-05 21:49:56,631 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2300, PETRI_PLACES=140, PETRI_TRANSITIONS=179} [2022-12-05 21:49:56,632 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2022-12-05 21:49:56,632 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 179 transitions, 2300 flow [2022-12-05 21:49:56,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:56,632 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:56,632 INFO L213 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] [2022-12-05 21:49:56,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:56,837 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,SelfDestructingSolverStorable16 [2022-12-05 21:49:56,837 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)] === [2022-12-05 21:49:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1201762613, now seen corresponding path program 12 times [2022-12-05 21:49:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:56,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071409114] [2022-12-05 21:49:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:56,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:56,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071409114] [2022-12-05 21:49:56,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071409114] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:56,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846303207] [2022-12-05 21:49:56,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-05 21:49:56,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:56,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:56,933 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) [2022-12-05 21:49:56,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-05 21:49:57,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-05 21:49:57,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:57,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:49:57,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:57,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:57,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846303207] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:57,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:57,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-05 21:49:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539197739] [2022-12-05 21:49:57,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:57,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 21:49:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 21:49:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-12-05 21:49:57,196 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:57,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 179 transitions, 2300 flow. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:57,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:57,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:57,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:57,638 INFO L130 PetriNetUnfolder]: 1684/2583 cut-off events. [2022-12-05 21:49:57,638 INFO L131 PetriNetUnfolder]: For 32004/32090 co-relation queries the response was YES. [2022-12-05 21:49:57,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18420 conditions, 2583 events. 1684/2583 cut-off events. For 32004/32090 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12049 event pairs, 481 based on Foata normal form. 100/2682 useless extension candidates. Maximal degree in co-relation 18373. Up to 1458 conditions per place. [2022-12-05 21:49:57,657 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 146 selfloop transitions, 69 changer transitions 0/227 dead transitions. [2022-12-05 21:49:57,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 227 transitions, 3076 flow [2022-12-05 21:49:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:49:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:49:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 77 transitions. [2022-12-05 21:49:57,659 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35648148148148145 [2022-12-05 21:49:57,659 INFO L175 Difference]: Start difference. First operand has 140 places, 179 transitions, 2300 flow. Second operand 9 states and 77 transitions. [2022-12-05 21:49:57,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 227 transitions, 3076 flow [2022-12-05 21:49:57,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 227 transitions, 2884 flow, removed 66 selfloop flow, removed 6 redundant places. [2022-12-05 21:49:57,730 INFO L231 Difference]: Finished difference. Result has 144 places, 186 transitions, 2399 flow [2022-12-05 21:49:57,731 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2399, PETRI_PLACES=144, PETRI_TRANSITIONS=186} [2022-12-05 21:49:57,731 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2022-12-05 21:49:57,731 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 186 transitions, 2399 flow [2022-12-05 21:49:57,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:57,731 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:57,731 INFO L213 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] [2022-12-05 21:49:57,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:57,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-05 21:49:57,937 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)] === [2022-12-05 21:49:57,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash -838743923, now seen corresponding path program 13 times [2022-12-05 21:49:57,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:57,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199658049] [2022-12-05 21:49:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:57,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:58,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:58,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199658049] [2022-12-05 21:49:58,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199658049] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:58,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707655308] [2022-12-05 21:49:58,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 21:49:58,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:58,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:58,025 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) [2022-12-05 21:49:58,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-05 21:49:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:58,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:49:58,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:58,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:58,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707655308] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:58,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:58,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-12-05 21:49:58,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903590705] [2022-12-05 21:49:58,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:58,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-05 21:49:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-05 21:49:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-12-05 21:49:58,276 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:58,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 186 transitions, 2399 flow. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:58,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:58,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:58,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:58,837 INFO L130 PetriNetUnfolder]: 1655/2522 cut-off events. [2022-12-05 21:49:58,837 INFO L131 PetriNetUnfolder]: For 30328/30439 co-relation queries the response was YES. [2022-12-05 21:49:58,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 2522 events. 1655/2522 cut-off events. For 30328/30439 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11622 event pairs, 445 based on Foata normal form. 125/2647 useless extension candidates. Maximal degree in co-relation 17924. Up to 1390 conditions per place. [2022-12-05 21:49:58,852 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 156 selfloop transitions, 99 changer transitions 0/266 dead transitions. [2022-12-05 21:49:58,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 266 transitions, 3450 flow [2022-12-05 21:49:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 21:49:58,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 21:49:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 114 transitions. [2022-12-05 21:49:58,854 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2022-12-05 21:49:58,854 INFO L175 Difference]: Start difference. First operand has 144 places, 186 transitions, 2399 flow. Second operand 13 states and 114 transitions. [2022-12-05 21:49:58,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 266 transitions, 3450 flow [2022-12-05 21:49:58,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 266 transitions, 3368 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-12-05 21:49:58,917 INFO L231 Difference]: Finished difference. Result has 154 places, 194 transitions, 2686 flow [2022-12-05 21:49:58,917 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2686, PETRI_PLACES=154, PETRI_TRANSITIONS=194} [2022-12-05 21:49:58,917 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2022-12-05 21:49:58,917 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 194 transitions, 2686 flow [2022-12-05 21:49:58,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:58,918 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:58,918 INFO L213 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] [2022-12-05 21:49:58,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-05 21:49:59,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:59,118 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)] === [2022-12-05 21:49:59,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:49:59,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1810412295, now seen corresponding path program 14 times [2022-12-05 21:49:59,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:49:59,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785187889] [2022-12-05 21:49:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:49:59,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:49:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:49:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:59,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:49:59,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785187889] [2022-12-05 21:49:59,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785187889] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:49:59,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307338684] [2022-12-05 21:49:59,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 21:49:59,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:49:59,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:49:59,196 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) [2022-12-05 21:49:59,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-05 21:49:59,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:49:59,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:49:59,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:49:59,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:49:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:59,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:49:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:49:59,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307338684] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:49:59,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:49:59,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-05 21:49:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768230768] [2022-12-05 21:49:59,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:49:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 21:49:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:49:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 21:49:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-12-05 21:49:59,431 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:49:59,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 194 transitions, 2686 flow. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:59,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:49:59,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:49:59,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:49:59,851 INFO L130 PetriNetUnfolder]: 1721/2632 cut-off events. [2022-12-05 21:49:59,851 INFO L131 PetriNetUnfolder]: For 33291/33314 co-relation queries the response was YES. [2022-12-05 21:49:59,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19271 conditions, 2632 events. 1721/2632 cut-off events. For 33291/33314 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12211 event pairs, 388 based on Foata normal form. 43/2675 useless extension candidates. Maximal degree in co-relation 19220. Up to 1215 conditions per place. [2022-12-05 21:49:59,871 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 171 selfloop transitions, 72 changer transitions 0/254 dead transitions. [2022-12-05 21:49:59,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 254 transitions, 3783 flow [2022-12-05 21:49:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 21:49:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 21:49:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 76 transitions. [2022-12-05 21:49:59,872 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2022-12-05 21:49:59,872 INFO L175 Difference]: Start difference. First operand has 154 places, 194 transitions, 2686 flow. Second operand 9 states and 76 transitions. [2022-12-05 21:49:59,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 254 transitions, 3783 flow [2022-12-05 21:49:59,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 254 transitions, 3512 flow, removed 60 selfloop flow, removed 8 redundant places. [2022-12-05 21:49:59,947 INFO L231 Difference]: Finished difference. Result has 156 places, 199 transitions, 2721 flow [2022-12-05 21:49:59,947 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2721, PETRI_PLACES=156, PETRI_TRANSITIONS=199} [2022-12-05 21:49:59,948 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2022-12-05 21:49:59,948 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 199 transitions, 2721 flow [2022-12-05 21:49:59,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:49:59,948 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:49:59,948 INFO L213 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] [2022-12-05 21:49:59,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-05 21:50:00,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:50:00,149 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)] === [2022-12-05 21:50:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:50:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1250165933, now seen corresponding path program 15 times [2022-12-05 21:50:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:50:00,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195774311] [2022-12-05 21:50:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:50:00,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:50:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:50:00,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:50:00,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:50:00,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195774311] [2022-12-05 21:50:00,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195774311] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:50:00,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093140134] [2022-12-05 21:50:00,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 21:50:00,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:50:00,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:50:00,229 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) [2022-12-05 21:50:00,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-05 21:50:00,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 21:50:00,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:50:00,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 21:50:00,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:50:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:50:00,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:50:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:50:00,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093140134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:50:00,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:50:00,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-12-05 21:50:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886445590] [2022-12-05 21:50:00,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:50:00,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-05 21:50:00,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:50:00,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-05 21:50:00,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-12-05 21:50:00,480 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 24 [2022-12-05 21:50:00,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 199 transitions, 2721 flow. Second operand has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:50:00,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:50:00,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 24 [2022-12-05 21:50:00,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:50:01,099 INFO L130 PetriNetUnfolder]: 1693/2576 cut-off events. [2022-12-05 21:50:01,099 INFO L131 PetriNetUnfolder]: For 32937/32960 co-relation queries the response was YES. [2022-12-05 21:50:01,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19193 conditions, 2576 events. 1693/2576 cut-off events. For 32937/32960 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11824 event pairs, 310 based on Foata normal form. 43/2619 useless extension candidates. Maximal degree in co-relation 19140. Up to 991 conditions per place. [2022-12-05 21:50:01,119 INFO L137 encePairwiseOnDemand]: 16/24 looper letters, 215 selfloop transitions, 90 changer transitions 0/316 dead transitions. [2022-12-05 21:50:01,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 316 transitions, 4282 flow [2022-12-05 21:50:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-05 21:50:01,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-05 21:50:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 147 transitions. [2022-12-05 21:50:01,120 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2022-12-05 21:50:01,120 INFO L175 Difference]: Start difference. First operand has 156 places, 199 transitions, 2721 flow. Second operand 15 states and 147 transitions. [2022-12-05 21:50:01,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 316 transitions, 4282 flow [2022-12-05 21:50:01,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 316 transitions, 4205 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-05 21:50:01,198 INFO L231 Difference]: Finished difference. Result has 164 places, 196 transitions, 2790 flow [2022-12-05 21:50:01,198 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2790, PETRI_PLACES=164, PETRI_TRANSITIONS=196} [2022-12-05 21:50:01,198 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2022-12-05 21:50:01,198 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 196 transitions, 2790 flow [2022-12-05 21:50:01,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.857142857142857) internal successors, (60), 21 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:50:01,199 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:50:01,199 INFO L213 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] [2022-12-05 21:50:01,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-05 21:50:01,405 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,SelfDestructingSolverStorable20 [2022-12-05 21:50:01,405 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)] === [2022-12-05 21:50:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:50:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1732273267, now seen corresponding path program 16 times [2022-12-05 21:50:01,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:50:01,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707846271] [2022-12-05 21:50:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:50:01,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:50:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:50:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:50:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:50:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707846271] [2022-12-05 21:50:01,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707846271] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:50:01,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067361880] [2022-12-05 21:50:01,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 21:50:01,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:50:01,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:50:01,487 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) [2022-12-05 21:50:01,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-05 21:50:01,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 21:50:01,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:50:01,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 21:50:01,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:50:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:50:01,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:50:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 21:50:01,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067361880] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 21:50:01,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 21:50:01,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2022-12-05 21:50:01,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615853911] [2022-12-05 21:50:01,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 21:50:01,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-05 21:50:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:50:01,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-05 21:50:01,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-12-05 21:50:01,705 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 24 [2022-12-05 21:50:01,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 196 transitions, 2790 flow. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:50:01,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:50:01,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 24 [2022-12-05 21:50:01,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:50:02,430 INFO L130 PetriNetUnfolder]: 1753/2623 cut-off events. [2022-12-05 21:50:02,430 INFO L131 PetriNetUnfolder]: For 36095/36095 co-relation queries the response was YES. [2022-12-05 21:50:02,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19645 conditions, 2623 events. 1753/2623 cut-off events. For 36095/36095 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11719 event pairs, 397 based on Foata normal form. 14/2637 useless extension candidates. Maximal degree in co-relation 19592. Up to 1595 conditions per place. [2022-12-05 21:50:02,450 INFO L137 encePairwiseOnDemand]: 14/24 looper letters, 206 selfloop transitions, 99 changer transitions 0/305 dead transitions. [2022-12-05 21:50:02,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 4566 flow [2022-12-05 21:50:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-05 21:50:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-05 21:50:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 121 transitions. [2022-12-05 21:50:02,465 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.26535087719298245 [2022-12-05 21:50:02,465 INFO L175 Difference]: Start difference. First operand has 164 places, 196 transitions, 2790 flow. Second operand 19 states and 121 transitions. [2022-12-05 21:50:02,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 4566 flow [2022-12-05 21:50:02,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 305 transitions, 4307 flow, removed 4 selfloop flow, removed 14 redundant places. [2022-12-05 21:50:02,544 INFO L231 Difference]: Finished difference. Result has 171 places, 217 transitions, 3067 flow [2022-12-05 21:50:02,544 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3067, PETRI_PLACES=171, PETRI_TRANSITIONS=217} [2022-12-05 21:50:02,544 INFO L294 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2022-12-05 21:50:02,544 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 217 transitions, 3067 flow [2022-12-05 21:50:02,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 21:50:02,544 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:50:02,545 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:50:02,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-05 21:50:02,749 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,SelfDestructingSolverStorable21 [2022-12-05 21:50:02,749 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)] === [2022-12-05 21:50:02,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:50:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1543440040, now seen corresponding path program 17 times [2022-12-05 21:50:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:50:02,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448951112] [2022-12-05 21:50:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:50:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:50:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:50:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:50:03,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:50:03,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448951112] [2022-12-05 21:50:03,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448951112] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 21:50:03,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761802154] [2022-12-05 21:50:03,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 21:50:03,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 21:50:03,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:50:03,576 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) [2022-12-05 21:50:03,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-05 21:50:03,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 21:50:03,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 21:50:03,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-05 21:50:03,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 21:50:04,220 INFO L321 Elim1Store]: treesize reduction 49, result has 49.5 percent of original size [2022-12-05 21:50:04,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 174 treesize of output 141 [2022-12-05 21:50:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:50:04,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 21:50:08,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 21:50:08,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 18 select indices, 18 select index equivalence classes, 0 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 153 case distinctions, treesize of input 521 treesize of output 2091 [2022-12-05 21:51:07,762 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. [2022-12-05 21:55:05,851 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-12-05 21:56:57,105 WARN L718 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2022-12-05 21:59:38,518 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-12-05 22:00:56,041 WARN L718 sPolynomialRelations]: Constructing 512(two to the power of 9 dual juncts. Received shutdown request... [2022-12-05 22:03:39,399 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-05 22:03:39,400 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 22:03:39,407 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 [2022-12-05 22:03:39,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-05 22:03:39,415 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 [2022-12-05 22:03:39,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 22:03:39,601 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 5 for 37ms.. [2022-12-05 22:03:39,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 22:03:39,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 22:03:39,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 22:03:39,603 INFO L458 BasicCegarLoop]: Path program histogram: [17, 2, 2, 1, 1] [2022-12-05 22:03:39,605 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 22:03:39,605 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 22:03:39,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 10:03:39 BasicIcfg [2022-12-05 22:03:39,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 22:03:39,607 INFO L158 Benchmark]: Toolchain (without parser) took 853420.67ms. Allocated memory was 189.8MB in the beginning and 739.2MB in the end (delta: 549.5MB). Free memory was 165.8MB in the beginning and 436.7MB in the end (delta: -271.0MB). Peak memory consumption was 525.1MB. Max. memory is 8.0GB. [2022-12-05 22:03:39,607 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 166.6MB in the beginning and 166.5MB in the end (delta: 88.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:03:39,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.92ms. Allocated memory is still 189.8MB. Free memory was 165.2MB in the beginning and 152.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-05 22:03:39,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.67ms. Allocated memory is still 189.8MB. Free memory was 152.6MB in the beginning and 151.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 22:03:39,608 INFO L158 Benchmark]: Boogie Preprocessor took 33.40ms. Allocated memory is still 189.8MB. Free memory was 151.1MB in the beginning and 149.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:03:39,608 INFO L158 Benchmark]: RCFGBuilder took 427.88ms. Allocated memory is still 189.8MB. Free memory was 149.0MB in the beginning and 128.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-12-05 22:03:39,608 INFO L158 Benchmark]: TraceAbstraction took 852708.79ms. Allocated memory was 189.8MB in the beginning and 739.2MB in the end (delta: 549.5MB). Free memory was 128.0MB in the beginning and 436.7MB in the end (delta: -308.7MB). Peak memory consumption was 487.3MB. Max. memory is 8.0GB. [2022-12-05 22:03:39,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 166.6MB in the beginning and 166.5MB in the end (delta: 88.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.92ms. Allocated memory is still 189.8MB. Free memory was 165.2MB in the beginning and 152.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.67ms. Allocated memory is still 189.8MB. Free memory was 152.6MB in the beginning and 151.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.40ms. Allocated memory is still 189.8MB. Free memory was 151.1MB in the beginning and 149.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 427.88ms. Allocated memory is still 189.8MB. Free memory was 149.0MB in the beginning and 128.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 852708.79ms. Allocated memory was 189.8MB in the beginning and 739.2MB in the end (delta: 549.5MB). Free memory was 128.0MB in the beginning and 436.7MB in the end (delta: -308.7MB). Peak memory consumption was 487.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 126 PlacesBefore, 30 PlacesAfterwards, 128 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 66 TrivialYvCompositions, 30 ConcurrentYvCompositions, 8 ChoiceCompositions, 104 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 712, independent: 706, independent conditional: 706, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 712, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 712, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 712, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 712, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 712, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 712, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 712, unknown conditional: 0, unknown unconditional: 712] , Statistics on independence cache: Total cache size (in pairs): 1132, Positive cache size: 1126, Positive conditional cache size: 0, Positive unconditional cache size: 1126, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - 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 5 for 37ms.. - 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 5 for 37ms.. - 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 5 for 37ms.. - 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 5 for 37ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 160 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: 852.6s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3143 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3143 mSDsluCounter, 607 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 123 IncrementalHoareTripleChecker+Unchecked, 508 mSDsCounter, 161 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10430 IncrementalHoareTripleChecker+Invalid, 10714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 161 mSolverCounterUnsat, 99 mSDtfsCounter, 10430 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1292 GetRequests, 736 SyntacticMatches, 41 SemanticMatches, 515 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2939 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3067occurred in iteration=22, InterpolantAutomatonStates: 279, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 1018 NumberOfCodeBlocks, 1001 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 1432 ConstructedInterpolants, 7 QuantifiedInterpolants, 10699 SizeOfPredicates, 185 NumberOfNonLiveVariables, 4398 ConjunctsInSsa, 300 ConjunctsInUnsatCore, 63 InterpolantComputations, 4 PerfectInterpolantSequences, 147/289 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