/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 04:39:31,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 04:39:31,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 04:39:31,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 04:39:31,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 04:39:31,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 04:39:31,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 04:39:31,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 04:39:31,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 04:39:31,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 04:39:31,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 04:39:31,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 04:39:31,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 04:39:31,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 04:39:31,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 04:39:31,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 04:39:31,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 04:39:31,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 04:39:31,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 04:39:32,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 04:39:32,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 04:39:32,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 04:39:32,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 04:39:32,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 04:39:32,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 04:39:32,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 04:39:32,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 04:39:32,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 04:39:32,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 04:39:32,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 04:39:32,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 04:39:32,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 04:39:32,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 04:39:32,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 04:39:32,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 04:39:32,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 04:39:32,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 04:39:32,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 04:39:32,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 04:39:32,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 04:39:32,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 04:39:32,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 04:39:32,043 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 04:39:32,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 04:39:32,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 04:39:32,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 04:39:32,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 04:39:32,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 04:39:32,046 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 04:39:32,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 04:39:32,046 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 04:39:32,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 04:39:32,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 04:39:32,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 04:39:32,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 04:39:32,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 04:39:32,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 04:39:32,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:39:32,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 04:39:32,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 04:39:32,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 04:39:32,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 04:39:32,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 04:39:32,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 04:39:32,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 04:39:32,049 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 04:39:32,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 04:39:32,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 04:39:32,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 04:39:32,274 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 04:39:32,275 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 04:39:32,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-01-28 04:39:33,402 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 04:39:33,560 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 04:39:33,561 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c [2023-01-28 04:39:33,566 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3f4abd8/4dcb7b8b5b2244c78c7b57e5641e73a7/FLAG7457b6fc9 [2023-01-28 04:39:33,579 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3f4abd8/4dcb7b8b5b2244c78c7b57e5641e73a7 [2023-01-28 04:39:33,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 04:39:33,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 04:39:33,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 04:39:33,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 04:39:33,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 04:39:33,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0108ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33, skipping insertion in model container [2023-01-28 04:39:33,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 04:39:33,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 04:39:33,751 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2023-01-28 04:39:33,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:39:33,766 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 04:39:33,783 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array-hom.wvr.c[2586,2599] [2023-01-28 04:39:33,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 04:39:33,795 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:39:33,795 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 04:39:33,800 INFO L208 MainTranslator]: Completed translation [2023-01-28 04:39:33,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33 WrapperNode [2023-01-28 04:39:33,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 04:39:33,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 04:39:33,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 04:39:33,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 04:39:33,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,827 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-01-28 04:39:33,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 04:39:33,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 04:39:33,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 04:39:33,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 04:39:33,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 04:39:33,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 04:39:33,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 04:39:33,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 04:39:33,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (1/1) ... [2023-01-28 04:39:33,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 04:39:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:39:33,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 04:39:33,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 04:39:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 04:39:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 04:39:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 04:39:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 04:39:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 04:39:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 04:39:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 04:39:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 04:39:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 04:39:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 04:39:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 04:39:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 04:39:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 04:39:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 04:39:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 04:39:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 04:39:33,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 04:39:33,925 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 04:39:34,006 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 04:39:34,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 04:39:34,295 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 04:39:34,386 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 04:39:34,387 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 04:39:34,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:39:34 BoogieIcfgContainer [2023-01-28 04:39:34,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 04:39:34,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 04:39:34,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 04:39:34,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 04:39:34,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 04:39:33" (1/3) ... [2023-01-28 04:39:34,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f56b8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:39:34, skipping insertion in model container [2023-01-28 04:39:34,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 04:39:33" (2/3) ... [2023-01-28 04:39:34,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f56b8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 04:39:34, skipping insertion in model container [2023-01-28 04:39:34,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 04:39:34" (3/3) ... [2023-01-28 04:39:34,400 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2023-01-28 04:39:34,416 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 04:39:34,417 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 04:39:34,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 04:39:34,521 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 04:39:34,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 145 transitions, 314 flow [2023-01-28 04:39:34,625 INFO L130 PetriNetUnfolder]: 12/142 cut-off events. [2023-01-28 04:39:34,625 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:39:34,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 12/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 88 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-01-28 04:39:34,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 145 transitions, 314 flow [2023-01-28 04:39:34,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 132 transitions, 282 flow [2023-01-28 04:39:34,637 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 04:39:34,644 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 132 transitions, 282 flow [2023-01-28 04:39:34,647 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 132 transitions, 282 flow [2023-01-28 04:39:34,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 282 flow [2023-01-28 04:39:34,676 INFO L130 PetriNetUnfolder]: 12/132 cut-off events. [2023-01-28 04:39:34,676 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:39:34,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 12/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 89 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 106. Up to 2 conditions per place. [2023-01-28 04:39:34,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2023-01-28 04:39:39,028 INFO L134 LiptonReduction]: Checked pairs total: 1523 [2023-01-28 04:39:39,029 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-01-28 04:39:39,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 04:39:39,052 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;@4a7c4468, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 04:39:39,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 04:39:39,068 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-28 04:39:39,068 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 04:39:39,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:39:39,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:39:39,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:39:39,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:39:39,078 INFO L85 PathProgramCache]: Analyzing trace with hash -924859563, now seen corresponding path program 1 times [2023-01-28 04:39:39,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:39:39,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235483153] [2023-01-28 04:39:39,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:39:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:39:39,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:39:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235483153] [2023-01-28 04:39:39,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235483153] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:39:39,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 04:39:39,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 04:39:39,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171228980] [2023-01-28 04:39:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:39:39,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 04:39:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:39:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 04:39:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 04:39:39,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 267 [2023-01-28 04:39:39,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:39,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:39:39,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 267 [2023-01-28 04:39:39,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:39:39,906 INFO L130 PetriNetUnfolder]: 269/376 cut-off events. [2023-01-28 04:39:39,906 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-01-28 04:39:39,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 376 events. 269/376 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1112 event pairs, 117 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 593. Up to 367 conditions per place. [2023-01-28 04:39:39,911 INFO L137 encePairwiseOnDemand]: 264/267 looper letters, 20 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-28 04:39:39,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 112 flow [2023-01-28 04:39:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 04:39:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 04:39:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-01-28 04:39:39,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332084893882647 [2023-01-28 04:39:39,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-01-28 04:39:39,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-01-28 04:39:39,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:39:39,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-01-28 04:39:39,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:39,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:39,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:39,959 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 347 transitions. [2023-01-28 04:39:39,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 112 flow [2023-01-28 04:39:39,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 04:39:39,965 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-01-28 04:39:39,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, 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} [2023-01-28 04:39:39,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-28 04:39:39,970 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-01-28 04:39:39,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:39,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:39:39,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:39:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 04:39:39,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:39:39,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:39:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash 313336442, now seen corresponding path program 1 times [2023-01-28 04:39:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:39:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836504111] [2023-01-28 04:39:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:39:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:39:40,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:39:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836504111] [2023-01-28 04:39:40,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836504111] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:39:40,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968813500] [2023-01-28 04:39:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:40,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:39:40,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:39:40,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:39:40,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 04:39:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:40,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 04:39:40,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:39:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:39:40,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:39:40,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:39:40,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968813500] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:39:40,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:39:40,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 04:39:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954203562] [2023-01-28 04:39:40,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:39:40,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 04:39:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:39:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 04:39:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:39:40,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-01-28 04:39:40,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:40,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:39:40,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-01-28 04:39:40,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:39:40,493 INFO L130 PetriNetUnfolder]: 309/442 cut-off events. [2023-01-28 04:39:40,494 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 04:39:40,495 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 1394 event pairs, 49 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 889. Up to 335 conditions per place. [2023-01-28 04:39:40,497 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 29 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-01-28 04:39:40,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 154 flow [2023-01-28 04:39:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 04:39:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 04:39:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-01-28 04:39:40,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41872659176029964 [2023-01-28 04:39:40,502 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-01-28 04:39:40,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-01-28 04:39:40,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:39:40,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-01-28 04:39:40,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:40,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:40,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:40,507 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 559 transitions. [2023-01-28 04:39:40,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 154 flow [2023-01-28 04:39:40,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 04:39:40,512 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 78 flow [2023-01-28 04:39:40,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, 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} [2023-01-28 04:39:40,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-28 04:39:40,513 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 78 flow [2023-01-28 04:39:40,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:40,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:39:40,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:39:40,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 04:39:40,719 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 [2023-01-28 04:39:40,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:39:40,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:39:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1604052521, now seen corresponding path program 1 times [2023-01-28 04:39:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:39:40,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258916804] [2023-01-28 04:39:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:39:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:39:40,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:39:40,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258916804] [2023-01-28 04:39:40,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258916804] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:39:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644516810] [2023-01-28 04:39:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:40,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:39:40,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:39:40,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:39:40,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 04:39:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:41,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:39:41,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:39:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:39:41,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:39:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:39:41,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644516810] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 04:39:41,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 04:39:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 14 [2023-01-28 04:39:41,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363442639] [2023-01-28 04:39:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:39:41,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 04:39:41,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:39:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 04:39:41,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:39:41,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:39:41,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:41,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:39:41,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:39:41,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:39:41,392 INFO L130 PetriNetUnfolder]: 409/609 cut-off events. [2023-01-28 04:39:41,392 INFO L131 PetriNetUnfolder]: For 108/152 co-relation queries the response was YES. [2023-01-28 04:39:41,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 609 events. 409/609 cut-off events. For 108/152 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1976 event pairs, 138 based on Foata normal form. 44/483 useless extension candidates. Maximal degree in co-relation 1407. Up to 345 conditions per place. [2023-01-28 04:39:41,397 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 52 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-01-28 04:39:41,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 300 flow [2023-01-28 04:39:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:39:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:39:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 744 transitions. [2023-01-28 04:39:41,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39807383627608345 [2023-01-28 04:39:41,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 744 transitions. [2023-01-28 04:39:41,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 744 transitions. [2023-01-28 04:39:41,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:39:41,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 744 transitions. [2023-01-28 04:39:41,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:41,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:41,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:41,407 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 78 flow. Second operand 7 states and 744 transitions. [2023-01-28 04:39:41,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 300 flow [2023-01-28 04:39:41,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 283 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 04:39:41,409 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 120 flow [2023-01-28 04:39:41,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, 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} [2023-01-28 04:39:41,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2023-01-28 04:39:41,411 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 120 flow [2023-01-28 04:39:41,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:41,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:39:41,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:39:41,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 04:39:41,617 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 [2023-01-28 04:39:41,618 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:39:41,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:39:41,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1189152529, now seen corresponding path program 2 times [2023-01-28 04:39:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:39:41,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538484847] [2023-01-28 04:39:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:39:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:39:41,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:39:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538484847] [2023-01-28 04:39:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538484847] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:39:41,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766579792] [2023-01-28 04:39:41,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:39:41,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:39:41,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:39:41,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:39:41,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 04:39:41,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 04:39:41,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:39:41,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 04:39:41,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:39:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:39:41,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 04:39:41,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766579792] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 04:39:41,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 04:39:41,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-01-28 04:39:41,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740359084] [2023-01-28 04:39:41,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 04:39:41,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 04:39:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:39:41,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 04:39:41,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-01-28 04:39:41,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-01-28 04:39:41,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:41,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:39:41,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-01-28 04:39:41,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:39:42,010 INFO L130 PetriNetUnfolder]: 312/464 cut-off events. [2023-01-28 04:39:42,010 INFO L131 PetriNetUnfolder]: For 218/247 co-relation queries the response was YES. [2023-01-28 04:39:42,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 464 events. 312/464 cut-off events. For 218/247 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1477 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. [2023-01-28 04:39:42,013 INFO L137 encePairwiseOnDemand]: 263/267 looper letters, 34 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-01-28 04:39:42,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 228 flow [2023-01-28 04:39:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 04:39:42,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 04:39:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 481 transitions. [2023-01-28 04:39:42,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450374531835206 [2023-01-28 04:39:42,015 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 481 transitions. [2023-01-28 04:39:42,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 481 transitions. [2023-01-28 04:39:42,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:39:42,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 481 transitions. [2023-01-28 04:39:42,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:42,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:42,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:42,019 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 120 flow. Second operand 4 states and 481 transitions. [2023-01-28 04:39:42,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 228 flow [2023-01-28 04:39:42,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 217 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 04:39:42,021 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 125 flow [2023-01-28 04:39:42,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, 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} [2023-01-28 04:39:42,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2023-01-28 04:39:42,022 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 125 flow [2023-01-28 04:39:42,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:39:42,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:39:42,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:39:42,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 04:39:42,231 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 [2023-01-28 04:39:42,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:39:42,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:39:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1697474197, now seen corresponding path program 1 times [2023-01-28 04:39:42,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:39:42,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705416210] [2023-01-28 04:39:42,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:42,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:39:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:39:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:39:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705416210] [2023-01-28 04:39:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705416210] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:39:43,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073108158] [2023-01-28 04:39:43,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:39:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:39:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:39:43,310 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:39:43,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 04:39:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:39:43,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 04:39:43,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:39:43,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 04:39:43,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:39:43,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:39:43,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-28 04:39:43,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:39:43,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-28 04:39:44,082 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:39:44,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:39:44,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-01-28 04:39:44,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:39:44,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:39:44,780 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~max1~0 c_~max2~0)) (.cse2 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (or .cse0 (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~A~0.base) .cse2))) (or (< c_~max2~0 .cse1) (<= .cse1 c_~max3~0))))) (or (and (or .cse0 (< c_~max2~0 c_~max3~0)) (or (= c_~max1~0 c_~max3~0) (<= c_~max3~0 c_~max2~0))) (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (< c_~max3~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~A~0.base) .cse2)))) (forall ((v_ArrVal_201 (Array Int Int)) (v_ArrVal_200 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_200) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~A~0.base) .cse2))) (or (= c_~max1~0 .cse3) (<= .cse3 c_~max2~0) (<= .cse3 c_~max3~0)))))) is different from false [2023-01-28 04:40:10,304 WARN L222 SmtUtils]: Spent 24.36s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:40:10,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:10,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-01-28 04:40:10,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:10,505 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 319 treesize of output 307 [2023-01-28 04:40:10,531 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 136 treesize of output 112 [2023-01-28 04:40:10,549 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:10,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 63 [2023-01-28 04:40:10,559 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 58 treesize of output 46 [2023-01-28 04:40:10,801 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:10,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 73 [2023-01-28 04:40:10,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:10,813 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 329 treesize of output 313 [2023-01-28 04:40:10,826 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 271 treesize of output 223 [2023-01-28 04:40:10,845 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 223 treesize of output 199 [2023-01-28 04:40:10,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:10,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 115 [2023-01-28 04:40:11,719 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-01-28 04:40:11,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,735 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 340 treesize of output 324 [2023-01-28 04:40:11,752 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 136 treesize of output 112 [2023-01-28 04:40:11,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 70 [2023-01-28 04:40:11,777 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 58 treesize of output 46 [2023-01-28 04:40:11,977 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 53 [2023-01-28 04:40:11,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:11,995 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 1264 treesize of output 1200 [2023-01-28 04:40:12,027 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:12,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 82 [2023-01-28 04:40:12,038 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 59 treesize of output 47 [2023-01-28 04:40:12,049 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 70 treesize of output 46 [2023-01-28 04:40:12,193 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:40:12,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 1 [2023-01-28 04:40:12,203 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:40:12,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 1 [2023-01-28 04:40:12,212 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:40:12,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 1 [2023-01-28 04:40:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:12,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073108158] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:12,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:12,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-01-28 04:40:12,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249269686] [2023-01-28 04:40:12,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:12,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 04:40:12,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:12,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 04:40:12,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=679, Unknown=8, NotChecked=54, Total=870 [2023-01-28 04:40:12,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 267 [2023-01-28 04:40:12,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 125 flow. Second operand has 30 states, 30 states have (on average 74.2) internal successors, (2226), 30 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:12,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:12,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 267 [2023-01-28 04:40:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:18,323 INFO L130 PetriNetUnfolder]: 810/1186 cut-off events. [2023-01-28 04:40:18,323 INFO L131 PetriNetUnfolder]: For 1184/1197 co-relation queries the response was YES. [2023-01-28 04:40:18,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 1186 events. 810/1186 cut-off events. For 1184/1197 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4682 event pairs, 60 based on Foata normal form. 14/956 useless extension candidates. Maximal degree in co-relation 2886. Up to 725 conditions per place. [2023-01-28 04:40:18,331 INFO L137 encePairwiseOnDemand]: 251/267 looper letters, 82 selfloop transitions, 53 changer transitions 1/138 dead transitions. [2023-01-28 04:40:18,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 138 transitions, 825 flow [2023-01-28 04:40:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:40:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:40:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 899 transitions. [2023-01-28 04:40:18,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30609465440926115 [2023-01-28 04:40:18,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 899 transitions. [2023-01-28 04:40:18,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 899 transitions. [2023-01-28 04:40:18,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:18,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 899 transitions. [2023-01-28 04:40:18,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 81.72727272727273) internal successors, (899), 11 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:18,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:18,341 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:18,341 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 125 flow. Second operand 11 states and 899 transitions. [2023-01-28 04:40:18,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 138 transitions, 825 flow [2023-01-28 04:40:18,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 138 transitions, 749 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:18,348 INFO L231 Difference]: Finished difference. Result has 50 places, 83 transitions, 499 flow [2023-01-28 04:40:18,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=499, PETRI_PLACES=50, PETRI_TRANSITIONS=83} [2023-01-28 04:40:18,349 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-01-28 04:40:18,349 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 83 transitions, 499 flow [2023-01-28 04:40:18,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 74.2) internal successors, (2226), 30 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:18,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:18,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:18,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:18,556 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 [2023-01-28 04:40:18,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:18,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1093688525, now seen corresponding path program 2 times [2023-01-28 04:40:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946751623] [2023-01-28 04:40:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:18,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:19,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:19,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:19,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946751623] [2023-01-28 04:40:19,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946751623] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:19,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389641788] [2023-01-28 04:40:19,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:40:19,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:19,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:19,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 04:40:19,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:19,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:19,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 04:40:19,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:19,945 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:40:19,947 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:19,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-01-28 04:40:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:19,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:20,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:20,326 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 125 treesize of output 69 [2023-01-28 04:40:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389641788] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:20,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:20,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 25 [2023-01-28 04:40:20,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724340662] [2023-01-28 04:40:20,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:20,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 04:40:20,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 04:40:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2023-01-28 04:40:20,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 267 [2023-01-28 04:40:20,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 83 transitions, 499 flow. Second operand has 27 states, 27 states have (on average 81.55555555555556) internal successors, (2202), 27 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:20,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:20,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 267 [2023-01-28 04:40:20,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:21,694 INFO L130 PetriNetUnfolder]: 1063/1559 cut-off events. [2023-01-28 04:40:21,694 INFO L131 PetriNetUnfolder]: For 2475/2475 co-relation queries the response was YES. [2023-01-28 04:40:21,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 1559 events. 1063/1559 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5922 event pairs, 148 based on Foata normal form. 1/1559 useless extension candidates. Maximal degree in co-relation 5364. Up to 1203 conditions per place. [2023-01-28 04:40:21,706 INFO L137 encePairwiseOnDemand]: 256/267 looper letters, 101 selfloop transitions, 58 changer transitions 1/160 dead transitions. [2023-01-28 04:40:21,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 160 transitions, 1227 flow [2023-01-28 04:40:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:40:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:40:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1034 transitions. [2023-01-28 04:40:21,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3227215980024969 [2023-01-28 04:40:21,710 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1034 transitions. [2023-01-28 04:40:21,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1034 transitions. [2023-01-28 04:40:21,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:21,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1034 transitions. [2023-01-28 04:40:21,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 86.16666666666667) internal successors, (1034), 12 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:21,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:21,721 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:21,721 INFO L175 Difference]: Start difference. First operand has 50 places, 83 transitions, 499 flow. Second operand 12 states and 1034 transitions. [2023-01-28 04:40:21,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 160 transitions, 1227 flow [2023-01-28 04:40:21,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 160 transitions, 1205 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-01-28 04:40:21,731 INFO L231 Difference]: Finished difference. Result has 67 places, 120 transitions, 917 flow [2023-01-28 04:40:21,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=67, PETRI_TRANSITIONS=120} [2023-01-28 04:40:21,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2023-01-28 04:40:21,734 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 120 transitions, 917 flow [2023-01-28 04:40:21,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.55555555555556) internal successors, (2202), 27 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:21,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:21,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:21,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:21,940 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 [2023-01-28 04:40:21,941 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:21,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:21,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1676278017, now seen corresponding path program 3 times [2023-01-28 04:40:21,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816515849] [2023-01-28 04:40:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:21,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:22,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:22,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816515849] [2023-01-28 04:40:22,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816515849] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:22,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310761566] [2023-01-28 04:40:22,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:40:22,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:22,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:22,533 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:22,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 04:40:22,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:40:22,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:22,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 04:40:22,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:22,969 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:40:22,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:22,972 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 64 treesize of output 37 [2023-01-28 04:40:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:23,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:23,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:23,327 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 125 treesize of output 69 [2023-01-28 04:40:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:23,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310761566] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:23,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:23,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-01-28 04:40:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234169912] [2023-01-28 04:40:23,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:23,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 04:40:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:23,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 04:40:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-01-28 04:40:23,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 267 [2023-01-28 04:40:23,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 120 transitions, 917 flow. Second operand has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:23,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:23,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 267 [2023-01-28 04:40:23,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:24,834 INFO L130 PetriNetUnfolder]: 1421/2114 cut-off events. [2023-01-28 04:40:24,834 INFO L131 PetriNetUnfolder]: For 5875/5990 co-relation queries the response was YES. [2023-01-28 04:40:24,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 2114 events. 1421/2114 cut-off events. For 5875/5990 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9375 event pairs, 169 based on Foata normal form. 22/2094 useless extension candidates. Maximal degree in co-relation 8454. Up to 1303 conditions per place. [2023-01-28 04:40:24,854 INFO L137 encePairwiseOnDemand]: 254/267 looper letters, 130 selfloop transitions, 110 changer transitions 4/248 dead transitions. [2023-01-28 04:40:24,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 248 transitions, 2188 flow [2023-01-28 04:40:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 04:40:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 04:40:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1193 transitions. [2023-01-28 04:40:24,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34370498415442235 [2023-01-28 04:40:24,858 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1193 transitions. [2023-01-28 04:40:24,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1193 transitions. [2023-01-28 04:40:24,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:24,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1193 transitions. [2023-01-28 04:40:24,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.76923076923077) internal successors, (1193), 13 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:24,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 267.0) internal successors, (3738), 14 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:24,867 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 267.0) internal successors, (3738), 14 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:24,867 INFO L175 Difference]: Start difference. First operand has 67 places, 120 transitions, 917 flow. Second operand 13 states and 1193 transitions. [2023-01-28 04:40:24,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 248 transitions, 2188 flow [2023-01-28 04:40:24,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 248 transitions, 2146 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-01-28 04:40:24,887 INFO L231 Difference]: Finished difference. Result has 83 places, 169 transitions, 1619 flow [2023-01-28 04:40:24,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1619, PETRI_PLACES=83, PETRI_TRANSITIONS=169} [2023-01-28 04:40:24,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2023-01-28 04:40:24,889 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 169 transitions, 1619 flow [2023-01-28 04:40:24,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:24,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:24,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:24,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:25,096 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 [2023-01-28 04:40:25,096 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:25,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1261622275, now seen corresponding path program 4 times [2023-01-28 04:40:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:25,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092321691] [2023-01-28 04:40:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092321691] [2023-01-28 04:40:25,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092321691] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:25,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155254040] [2023-01-28 04:40:25,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:40:25,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:25,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:25,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:25,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 04:40:25,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:40:25,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:25,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-28 04:40:25,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:26,242 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 04:40:26,243 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 77 treesize of output 63 [2023-01-28 04:40:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:26,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:26,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:26,649 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 117 treesize of output 69 [2023-01-28 04:40:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155254040] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:26,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 25 [2023-01-28 04:40:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260825098] [2023-01-28 04:40:26,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:26,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 04:40:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 04:40:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-01-28 04:40:26,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 267 [2023-01-28 04:40:26,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 169 transitions, 1619 flow. Second operand has 27 states, 27 states have (on average 81.29629629629629) internal successors, (2195), 27 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:26,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:26,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 267 [2023-01-28 04:40:26,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:29,801 INFO L130 PetriNetUnfolder]: 2892/4445 cut-off events. [2023-01-28 04:40:29,801 INFO L131 PetriNetUnfolder]: For 16905/16905 co-relation queries the response was YES. [2023-01-28 04:40:29,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21891 conditions, 4445 events. 2892/4445 cut-off events. For 16905/16905 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23354 event pairs, 132 based on Foata normal form. 4/4449 useless extension candidates. Maximal degree in co-relation 21033. Up to 1933 conditions per place. [2023-01-28 04:40:29,840 INFO L137 encePairwiseOnDemand]: 252/267 looper letters, 265 selfloop transitions, 300 changer transitions 16/581 dead transitions. [2023-01-28 04:40:29,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 581 transitions, 5961 flow [2023-01-28 04:40:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 04:40:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 04:40:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2548 transitions. [2023-01-28 04:40:29,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3290714193465065 [2023-01-28 04:40:29,848 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2548 transitions. [2023-01-28 04:40:29,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2548 transitions. [2023-01-28 04:40:29,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:29,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2548 transitions. [2023-01-28 04:40:29,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 87.86206896551724) internal successors, (2548), 29 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:29,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:29,864 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:29,864 INFO L175 Difference]: Start difference. First operand has 83 places, 169 transitions, 1619 flow. Second operand 29 states and 2548 transitions. [2023-01-28 04:40:29,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 581 transitions, 5961 flow [2023-01-28 04:40:29,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 581 transitions, 5769 flow, removed 70 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:29,933 INFO L231 Difference]: Finished difference. Result has 126 places, 392 transitions, 4632 flow [2023-01-28 04:40:29,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4632, PETRI_PLACES=126, PETRI_TRANSITIONS=392} [2023-01-28 04:40:29,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2023-01-28 04:40:29,936 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 392 transitions, 4632 flow [2023-01-28 04:40:29,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.29629629629629) internal successors, (2195), 27 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:29,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:29,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:29,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:30,143 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 [2023-01-28 04:40:30,144 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:30,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash -542212045, now seen corresponding path program 5 times [2023-01-28 04:40:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:30,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342778920] [2023-01-28 04:40:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:31,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:31,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342778920] [2023-01-28 04:40:31,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342778920] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:31,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244250368] [2023-01-28 04:40:31,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:40:31,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:31,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:31,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:31,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 04:40:31,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:31,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:31,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 04:40:31,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:31,498 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 57 treesize of output 37 [2023-01-28 04:40:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:31,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:31,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:31,756 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 117 treesize of output 69 [2023-01-28 04:40:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:32,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244250368] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:32,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:32,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 25 [2023-01-28 04:40:32,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710149336] [2023-01-28 04:40:32,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:32,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 04:40:32,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:32,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 04:40:32,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2023-01-28 04:40:32,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-28 04:40:32,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 392 transitions, 4632 flow. Second operand has 27 states, 27 states have (on average 71.55555555555556) internal successors, (1932), 27 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:32,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:32,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-28 04:40:32,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:34,935 INFO L130 PetriNetUnfolder]: 3079/4770 cut-off events. [2023-01-28 04:40:34,935 INFO L131 PetriNetUnfolder]: For 37489/37489 co-relation queries the response was YES. [2023-01-28 04:40:34,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29774 conditions, 4770 events. 3079/4770 cut-off events. For 37489/37489 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 25601 event pairs, 310 based on Foata normal form. 33/4803 useless extension candidates. Maximal degree in co-relation 29664. Up to 3422 conditions per place. [2023-01-28 04:40:34,979 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 342 selfloop transitions, 220 changer transitions 5/567 dead transitions. [2023-01-28 04:40:34,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 567 transitions, 7473 flow [2023-01-28 04:40:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-28 04:40:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-28 04:40:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2198 transitions. [2023-01-28 04:40:34,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28386930130440396 [2023-01-28 04:40:34,986 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2198 transitions. [2023-01-28 04:40:34,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2198 transitions. [2023-01-28 04:40:34,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:34,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2198 transitions. [2023-01-28 04:40:34,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 75.79310344827586) internal successors, (2198), 29 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:34,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:35,000 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 267.0) internal successors, (8010), 30 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:35,000 INFO L175 Difference]: Start difference. First operand has 126 places, 392 transitions, 4632 flow. Second operand 29 states and 2198 transitions. [2023-01-28 04:40:35,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 567 transitions, 7473 flow [2023-01-28 04:40:35,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 567 transitions, 7143 flow, removed 164 selfloop flow, removed 2 redundant places. [2023-01-28 04:40:35,156 INFO L231 Difference]: Finished difference. Result has 160 places, 454 transitions, 5904 flow [2023-01-28 04:40:35,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5904, PETRI_PLACES=160, PETRI_TRANSITIONS=454} [2023-01-28 04:40:35,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2023-01-28 04:40:35,157 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 454 transitions, 5904 flow [2023-01-28 04:40:35,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 71.55555555555556) internal successors, (1932), 27 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:35,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:35,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:35,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:35,358 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 [2023-01-28 04:40:35,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:35,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:35,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1240361973, now seen corresponding path program 6 times [2023-01-28 04:40:35,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:35,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715851457] [2023-01-28 04:40:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:35,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:35,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715851457] [2023-01-28 04:40:35,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715851457] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536529905] [2023-01-28 04:40:35,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:40:35,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:35,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:35,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:35,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 04:40:36,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 04:40:36,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:36,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 34 conjunts are in the unsatisfiable core [2023-01-28 04:40:36,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:36,474 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 04:40:36,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-01-28 04:40:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:36,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:36,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:36,915 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 101 treesize of output 69 [2023-01-28 04:40:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:37,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536529905] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:37,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:37,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2023-01-28 04:40:37,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965596090] [2023-01-28 04:40:37,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:37,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 04:40:37,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:37,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 04:40:37,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-01-28 04:40:37,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 267 [2023-01-28 04:40:37,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 454 transitions, 5904 flow. Second operand has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:37,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:37,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 267 [2023-01-28 04:40:37,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:38,503 INFO L130 PetriNetUnfolder]: 3040/4779 cut-off events. [2023-01-28 04:40:38,503 INFO L131 PetriNetUnfolder]: For 47288/47455 co-relation queries the response was YES. [2023-01-28 04:40:38,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31701 conditions, 4779 events. 3040/4779 cut-off events. For 47288/47455 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 26609 event pairs, 571 based on Foata normal form. 112/4841 useless extension candidates. Maximal degree in co-relation 31318. Up to 4219 conditions per place. [2023-01-28 04:40:38,553 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 373 selfloop transitions, 128 changer transitions 1/516 dead transitions. [2023-01-28 04:40:38,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 516 transitions, 7662 flow [2023-01-28 04:40:38,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 04:40:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 04:40:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 983 transitions. [2023-01-28 04:40:38,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33469526727953697 [2023-01-28 04:40:38,555 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 983 transitions. [2023-01-28 04:40:38,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 983 transitions. [2023-01-28 04:40:38,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:38,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 983 transitions. [2023-01-28 04:40:38,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 89.36363636363636) internal successors, (983), 11 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:38,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:38,573 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 267.0) internal successors, (3204), 12 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:38,573 INFO L175 Difference]: Start difference. First operand has 160 places, 454 transitions, 5904 flow. Second operand 11 states and 983 transitions. [2023-01-28 04:40:38,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 516 transitions, 7662 flow [2023-01-28 04:40:38,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 516 transitions, 7298 flow, removed 112 selfloop flow, removed 8 redundant places. [2023-01-28 04:40:38,805 INFO L231 Difference]: Finished difference. Result has 166 places, 480 transitions, 6284 flow [2023-01-28 04:40:38,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6284, PETRI_PLACES=166, PETRI_TRANSITIONS=480} [2023-01-28 04:40:38,806 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2023-01-28 04:40:38,806 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 480 transitions, 6284 flow [2023-01-28 04:40:38,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.75) internal successors, (2034), 24 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:38,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:38,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:38,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 04:40:39,013 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 [2023-01-28 04:40:39,013 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:39,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:39,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1223895319, now seen corresponding path program 7 times [2023-01-28 04:40:39,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:39,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082333165] [2023-01-28 04:40:39,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:39,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:39,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082333165] [2023-01-28 04:40:39,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082333165] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:39,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672104904] [2023-01-28 04:40:39,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:40:39,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:39,581 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:39,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 04:40:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:39,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-01-28 04:40:39,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:39,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 04:40:39,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:40:39,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:40:39,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:40:40,316 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-01-28 04:40:40,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-01-28 04:40:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:40,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:41,418 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (< c_~max2~0 c_~max3~0)) (.cse4 (<= c_~max3~0 c_~max2~0)) (.cse10 (= c_~max1~0 c_~max2~0)) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 c_~A~0.offset))) (or (<= .cse0 c_~max2~0) (<= .cse0 c_~max3~0) (= .cse0 .cse1) (<= .cse1 c_~max1~0))))) (or .cse4 (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse6 (select .cse5 c_~A~0.offset))) (or (< c_~max3~0 (select .cse5 .cse3)) (= .cse6 c_~max3~0) (<= .cse6 c_~max1~0)))))) (or (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse8 (select .cse7 c_~A~0.offset))) (or (< c_~max3~0 (select .cse7 .cse3)) (<= .cse8 c_~max1~0) (= .cse8 c_~max2~0))))) .cse9) (or (and (or .cse10 .cse9) (or (= c_~max1~0 c_~max3~0) .cse4)) (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (or (< c_~max3~0 (select .cse11 .cse3)) (< c_~max1~0 (select .cse11 c_~A~0.offset)))))) (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse12 (select .cse14 .cse3)) (.cse13 (select .cse14 c_~A~0.offset))) (or (<= .cse12 c_~max3~0) (< c_~max2~0 .cse12) (<= .cse13 c_~max1~0) (= .cse13 c_~max2~0))))) (or (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse16 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse15 (select .cse16 .cse3))) (or (<= .cse15 c_~max3~0) (< c_~max1~0 (select .cse16 c_~A~0.offset)) (< c_~max2~0 .cse15))))) .cse10) (forall ((v_ArrVal_470 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse17 (select .cse18 .cse3))) (or (<= .cse17 c_~max2~0) (<= .cse17 c_~max3~0) (< c_~max1~0 (select .cse18 c_~A~0.offset)) (= c_~max1~0 .cse17))))))) is different from false [2023-01-28 04:40:41,756 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse9 (= c_~max1~0 c_~max2~0)) (.cse12 (<= c_~max3~0 c_~max2~0)) (.cse15 (< c_~max2~0 c_~max3~0)) (.cse3 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse0 (select .cse2 .cse3)) (.cse1 (select .cse2 c_~A~0.offset))) (or (< c_~max2~0 .cse0) (<= .cse0 c_~max3~0) (= .cse1 c_~max2~0) (<= .cse1 c_~max1~0))))) (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse4 (select .cse6 .cse3)) (.cse5 (select .cse6 c_~A~0.offset))) (or (= .cse4 .cse5) (<= .cse4 c_~max3~0) (<= .cse4 c_~max2~0) (<= .cse5 c_~max1~0))))) (or (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse8 (select .cse7 .cse3))) (or (< c_~max1~0 (select .cse7 c_~A~0.offset)) (< c_~max2~0 .cse8) (<= .cse8 c_~max3~0))))) .cse9) (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse11 (select .cse10 .cse3))) (or (< c_~max1~0 (select .cse10 c_~A~0.offset)) (= c_~max1~0 .cse11) (<= .cse11 c_~max3~0) (<= .cse11 c_~max2~0))))) (or .cse12 (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse14 (select .cse13 c_~A~0.offset))) (or (< c_~max3~0 (select .cse13 .cse3)) (= .cse14 c_~max3~0) (<= .cse14 c_~max1~0)))))) (or (and (or .cse9 .cse15) (or (= c_~max1~0 c_~max3~0) .cse12)) (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (or (< c_~max3~0 (select .cse16 .cse3)) (< c_~max1~0 (select .cse16 c_~A~0.offset)))))) (or .cse15 (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int))) (let ((.cse17 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_470) c_~A~0.base))) (let ((.cse18 (select .cse17 c_~A~0.offset))) (or (< c_~max3~0 (select .cse17 .cse3)) (= .cse18 c_~max2~0) (<= .cse18 c_~max1~0)))))))) is different from false [2023-01-28 04:40:45,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:45,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 65 [2023-01-28 04:40:45,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:45,331 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 764 treesize of output 740 [2023-01-28 04:40:45,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:45,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 350 treesize of output 338 [2023-01-28 04:40:45,406 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:45,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 167 [2023-01-28 04:40:45,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:45,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 320 treesize of output 288 [2023-01-28 04:40:46,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:46,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 102 [2023-01-28 04:40:46,252 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 04:40:46,252 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 1161 treesize of output 1100 [2023-01-28 04:40:46,296 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:40:46,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 251 [2023-01-28 04:40:46,320 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:40:46,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 505 treesize of output 461 [2023-01-28 04:40:46,348 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-28 04:40:46,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 461 treesize of output 373 [2023-01-28 04:40:46,572 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:46,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 69 [2023-01-28 04:40:46,587 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:46,587 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 828 treesize of output 792 [2023-01-28 04:40:46,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:40:46,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 170 [2023-01-28 04:40:46,633 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:46,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 364 treesize of output 312 [2023-01-28 04:40:46,656 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:46,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 143 [2023-01-28 04:40:46,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:46,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 89 [2023-01-28 04:40:46,932 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:46,932 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 1125 treesize of output 1073 [2023-01-28 04:40:46,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:40:46,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 265 treesize of output 245 [2023-01-28 04:40:47,007 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:47,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 493 treesize of output 457 [2023-01-28 04:40:47,031 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:47,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 453 treesize of output 377 [2023-01-28 04:40:47,308 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:40:47,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2023-01-28 04:40:47,324 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:47,324 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 1083 treesize of output 1039 [2023-01-28 04:40:47,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:40:47,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 103 [2023-01-28 04:40:47,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:40:47,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 95 [2023-01-28 04:40:47,435 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 04:40:47,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 97 [2023-01-28 04:40:47,505 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:40:47,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 1 [2023-01-28 04:40:47,517 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:40:47,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 1 [2023-01-28 04:40:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:40:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672104904] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:47,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:47,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 28 [2023-01-28 04:40:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509477732] [2023-01-28 04:40:47,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:47,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 04:40:47,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 04:40:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=625, Unknown=2, NotChecked=106, Total=870 [2023-01-28 04:40:47,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-28 04:40:47,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 480 transitions, 6284 flow. Second operand has 30 states, 30 states have (on average 71.3) internal successors, (2139), 30 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:47,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:47,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-28 04:40:47,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:50,505 INFO L130 PetriNetUnfolder]: 3560/5525 cut-off events. [2023-01-28 04:40:50,506 INFO L131 PetriNetUnfolder]: For 51022/51022 co-relation queries the response was YES. [2023-01-28 04:40:50,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36297 conditions, 5525 events. 3560/5525 cut-off events. For 51022/51022 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30214 event pairs, 621 based on Foata normal form. 3/5528 useless extension candidates. Maximal degree in co-relation 35998. Up to 4425 conditions per place. [2023-01-28 04:40:50,551 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 382 selfloop transitions, 241 changer transitions 14/637 dead transitions. [2023-01-28 04:40:50,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 637 transitions, 9054 flow [2023-01-28 04:40:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-01-28 04:40:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-01-28 04:40:50,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1902 transitions. [2023-01-28 04:40:50,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2849438202247191 [2023-01-28 04:40:50,556 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1902 transitions. [2023-01-28 04:40:50,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1902 transitions. [2023-01-28 04:40:50,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:50,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1902 transitions. [2023-01-28 04:40:50,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 76.08) internal successors, (1902), 25 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:50,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:50,566 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 267.0) internal successors, (6942), 26 states have internal predecessors, (6942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:50,566 INFO L175 Difference]: Start difference. First operand has 166 places, 480 transitions, 6284 flow. Second operand 25 states and 1902 transitions. [2023-01-28 04:40:50,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 637 transitions, 9054 flow [2023-01-28 04:40:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 637 transitions, 8844 flow, removed 59 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:50,853 INFO L231 Difference]: Finished difference. Result has 194 places, 520 transitions, 7346 flow [2023-01-28 04:40:50,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6074, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7346, PETRI_PLACES=194, PETRI_TRANSITIONS=520} [2023-01-28 04:40:50,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2023-01-28 04:40:50,854 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 520 transitions, 7346 flow [2023-01-28 04:40:50,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 71.3) internal successors, (2139), 30 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:50,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:50,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:50,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:51,061 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 [2023-01-28 04:40:51,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:51,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1545706338, now seen corresponding path program 8 times [2023-01-28 04:40:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:51,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950285741] [2023-01-28 04:40:51,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:51,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:51,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:51,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950285741] [2023-01-28 04:40:51,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950285741] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:51,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229426281] [2023-01-28 04:40:51,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:40:51,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:51,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:51,177 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:51,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 04:40:51,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:51,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:51,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:40:51,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:51,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:51,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229426281] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:51,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:51,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-01-28 04:40:51,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111436535] [2023-01-28 04:40:51,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:51,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 04:40:51,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:51,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 04:40:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-01-28 04:40:51,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 267 [2023-01-28 04:40:51,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 520 transitions, 7346 flow. Second operand has 15 states, 15 states have (on average 107.93333333333334) internal successors, (1619), 15 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:51,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:51,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 267 [2023-01-28 04:40:51,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:52,679 INFO L130 PetriNetUnfolder]: 3915/6206 cut-off events. [2023-01-28 04:40:52,679 INFO L131 PetriNetUnfolder]: For 71329/71844 co-relation queries the response was YES. [2023-01-28 04:40:52,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43063 conditions, 6206 events. 3915/6206 cut-off events. For 71329/71844 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37038 event pairs, 1251 based on Foata normal form. 354/6429 useless extension candidates. Maximal degree in co-relation 42767. Up to 4058 conditions per place. [2023-01-28 04:40:52,738 INFO L137 encePairwiseOnDemand]: 262/267 looper letters, 561 selfloop transitions, 60 changer transitions 2/658 dead transitions. [2023-01-28 04:40:52,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 658 transitions, 10107 flow [2023-01-28 04:40:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 04:40:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 04:40:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2023-01-28 04:40:52,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803638309256287 [2023-01-28 04:40:52,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2023-01-28 04:40:52,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2023-01-28 04:40:52,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:52,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2023-01-28 04:40:52,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:52,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:52,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:52,743 INFO L175 Difference]: Start difference. First operand has 194 places, 520 transitions, 7346 flow. Second operand 7 states and 800 transitions. [2023-01-28 04:40:52,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 658 transitions, 10107 flow [2023-01-28 04:40:53,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 658 transitions, 9731 flow, removed 109 selfloop flow, removed 16 redundant places. [2023-01-28 04:40:53,026 INFO L231 Difference]: Finished difference. Result has 187 places, 526 transitions, 7357 flow [2023-01-28 04:40:53,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7357, PETRI_PLACES=187, PETRI_TRANSITIONS=526} [2023-01-28 04:40:53,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2023-01-28 04:40:53,027 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 526 transitions, 7357 flow [2023-01-28 04:40:53,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.93333333333334) internal successors, (1619), 15 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:53,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:53,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:53,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:53,228 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 [2023-01-28 04:40:53,228 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:53,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 235402435, now seen corresponding path program 1 times [2023-01-28 04:40:53,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:53,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817357823] [2023-01-28 04:40:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:53,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:53,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:53,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817357823] [2023-01-28 04:40:53,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817357823] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:53,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636756487] [2023-01-28 04:40:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:53,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:53,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:53,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:53,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 04:40:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:53,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 04:40:53,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:53,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:53,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636756487] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:53,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:53,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 04:40:53,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485059240] [2023-01-28 04:40:53,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:53,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 04:40:53,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:53,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 04:40:53,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:40:53,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:40:53,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 526 transitions, 7357 flow. Second operand has 16 states, 16 states have (on average 100.4375) internal successors, (1607), 16 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:53,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:53,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:40:53,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:55,000 INFO L130 PetriNetUnfolder]: 4440/6912 cut-off events. [2023-01-28 04:40:55,000 INFO L131 PetriNetUnfolder]: For 80768/80783 co-relation queries the response was YES. [2023-01-28 04:40:55,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48762 conditions, 6912 events. 4440/6912 cut-off events. For 80768/80783 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40385 event pairs, 676 based on Foata normal form. 27/6931 useless extension candidates. Maximal degree in co-relation 48504. Up to 2393 conditions per place. [2023-01-28 04:40:55,056 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 643 selfloop transitions, 129 changer transitions 24/812 dead transitions. [2023-01-28 04:40:55,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 812 transitions, 12316 flow [2023-01-28 04:40:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:40:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:40:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1292 transitions. [2023-01-28 04:40:55,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40324594257178525 [2023-01-28 04:40:55,063 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1292 transitions. [2023-01-28 04:40:55,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1292 transitions. [2023-01-28 04:40:55,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:55,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1292 transitions. [2023-01-28 04:40:55,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 107.66666666666667) internal successors, (1292), 12 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:55,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:55,068 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:55,068 INFO L175 Difference]: Start difference. First operand has 187 places, 526 transitions, 7357 flow. Second operand 12 states and 1292 transitions. [2023-01-28 04:40:55,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 812 transitions, 12316 flow [2023-01-28 04:40:55,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 812 transitions, 12197 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-01-28 04:40:55,385 INFO L231 Difference]: Finished difference. Result has 198 places, 555 transitions, 8118 flow [2023-01-28 04:40:55,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8118, PETRI_PLACES=198, PETRI_TRANSITIONS=555} [2023-01-28 04:40:55,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2023-01-28 04:40:55,386 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 555 transitions, 8118 flow [2023-01-28 04:40:55,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 100.4375) internal successors, (1607), 16 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:55,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:55,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:55,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:55,587 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 [2023-01-28 04:40:55,588 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:55,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1171800201, now seen corresponding path program 9 times [2023-01-28 04:40:55,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:55,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816148803] [2023-01-28 04:40:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:55,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816148803] [2023-01-28 04:40:55,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816148803] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:55,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325572632] [2023-01-28 04:40:55,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:40:55,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:55,737 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:55,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 04:40:55,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:40:55,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:55,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 04:40:55,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:55,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:56,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:56,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325572632] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:56,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:56,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 04:40:56,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61145061] [2023-01-28 04:40:56,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:56,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 04:40:56,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:56,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 04:40:56,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-01-28 04:40:56,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 267 [2023-01-28 04:40:56,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 555 transitions, 8118 flow. Second operand has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:56,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:56,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 267 [2023-01-28 04:40:56,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:57,193 INFO L130 PetriNetUnfolder]: 3515/5725 cut-off events. [2023-01-28 04:40:57,193 INFO L131 PetriNetUnfolder]: For 85643/85990 co-relation queries the response was YES. [2023-01-28 04:40:57,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42734 conditions, 5725 events. 3515/5725 cut-off events. For 85643/85990 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 35373 event pairs, 652 based on Foata normal form. 452/6076 useless extension candidates. Maximal degree in co-relation 42659. Up to 2193 conditions per place. [2023-01-28 04:40:57,239 INFO L137 encePairwiseOnDemand]: 261/267 looper letters, 463 selfloop transitions, 100 changer transitions 24/623 dead transitions. [2023-01-28 04:40:57,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 623 transitions, 9997 flow [2023-01-28 04:40:57,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 04:40:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 04:40:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 880 transitions. [2023-01-28 04:40:57,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41198501872659177 [2023-01-28 04:40:57,242 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 880 transitions. [2023-01-28 04:40:57,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 880 transitions. [2023-01-28 04:40:57,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:57,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 880 transitions. [2023-01-28 04:40:57,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.0) internal successors, (880), 8 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:57,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:57,246 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 267.0) internal successors, (2403), 9 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:57,246 INFO L175 Difference]: Start difference. First operand has 198 places, 555 transitions, 8118 flow. Second operand 8 states and 880 transitions. [2023-01-28 04:40:57,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 623 transitions, 9997 flow [2023-01-28 04:40:57,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 623 transitions, 9887 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-01-28 04:40:57,623 INFO L231 Difference]: Finished difference. Result has 201 places, 507 transitions, 7805 flow [2023-01-28 04:40:57,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=7344, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7805, PETRI_PLACES=201, PETRI_TRANSITIONS=507} [2023-01-28 04:40:57,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2023-01-28 04:40:57,624 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 507 transitions, 7805 flow [2023-01-28 04:40:57,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 104.0) internal successors, (1456), 14 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:57,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:57,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:57,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-01-28 04:40:57,826 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 [2023-01-28 04:40:57,826 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:40:57,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:40:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1746206957, now seen corresponding path program 2 times [2023-01-28 04:40:57,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:40:57,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696216454] [2023-01-28 04:40:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:40:57,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:40:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:40:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:40:57,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:40:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696216454] [2023-01-28 04:40:57,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696216454] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:40:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074189336] [2023-01-28 04:40:57,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:40:57,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:40:57,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:40:57,941 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:40:57,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-01-28 04:40:58,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:40:58,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:40:58,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 04:40:58,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:40:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:40:58,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:40:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 04:40:58,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074189336] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:40:58,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:40:58,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-01-28 04:40:58,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507969011] [2023-01-28 04:40:58,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:40:58,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 04:40:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:40:58,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 04:40:58,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-01-28 04:40:58,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:40:58,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 507 transitions, 7805 flow. Second operand has 16 states, 16 states have (on average 101.6875) internal successors, (1627), 16 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:58,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:40:58,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:40:58,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:40:59,473 INFO L130 PetriNetUnfolder]: 3288/5506 cut-off events. [2023-01-28 04:40:59,473 INFO L131 PetriNetUnfolder]: For 86840/86862 co-relation queries the response was YES. [2023-01-28 04:40:59,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40639 conditions, 5506 events. 3288/5506 cut-off events. For 86840/86862 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 35048 event pairs, 375 based on Foata normal form. 375/5869 useless extension candidates. Maximal degree in co-relation 40562. Up to 2157 conditions per place. [2023-01-28 04:40:59,521 INFO L137 encePairwiseOnDemand]: 258/267 looper letters, 516 selfloop transitions, 88 changer transitions 22/640 dead transitions. [2023-01-28 04:40:59,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 640 transitions, 10206 flow [2023-01-28 04:40:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 04:40:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 04:40:59,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1283 transitions. [2023-01-28 04:40:59,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004369538077403 [2023-01-28 04:40:59,524 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1283 transitions. [2023-01-28 04:40:59,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1283 transitions. [2023-01-28 04:40:59,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:40:59,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1283 transitions. [2023-01-28 04:40:59,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 106.91666666666667) internal successors, (1283), 12 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:59,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:59,530 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:59,530 INFO L175 Difference]: Start difference. First operand has 201 places, 507 transitions, 7805 flow. Second operand 12 states and 1283 transitions. [2023-01-28 04:40:59,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 640 transitions, 10206 flow [2023-01-28 04:40:59,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 640 transitions, 9948 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-01-28 04:40:59,869 INFO L231 Difference]: Finished difference. Result has 205 places, 433 transitions, 6658 flow [2023-01-28 04:40:59,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=6171, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6658, PETRI_PLACES=205, PETRI_TRANSITIONS=433} [2023-01-28 04:40:59,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2023-01-28 04:40:59,870 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 433 transitions, 6658 flow [2023-01-28 04:40:59,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 101.6875) internal successors, (1627), 16 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:40:59,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:40:59,871 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:40:59,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:00,071 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 [2023-01-28 04:41:00,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:00,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1869947944, now seen corresponding path program 10 times [2023-01-28 04:41:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:00,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445532466] [2023-01-28 04:41:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:00,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:41:00,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:00,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445532466] [2023-01-28 04:41:00,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445532466] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:00,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18558136] [2023-01-28 04:41:00,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:41:00,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:00,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:00,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:00,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-01-28 04:41:00,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:41:00,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:00,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:41:00,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:41:00,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:41:00,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18558136] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:00,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:00,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 18 [2023-01-28 04:41:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160344867] [2023-01-28 04:41:00,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:00,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:41:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:00,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:41:00,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:41:00,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-28 04:41:00,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 433 transitions, 6658 flow. Second operand has 18 states, 18 states have (on average 98.05555555555556) internal successors, (1765), 18 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:00,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:00,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-28 04:41:00,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:02,212 INFO L130 PetriNetUnfolder]: 2952/5043 cut-off events. [2023-01-28 04:41:02,212 INFO L131 PetriNetUnfolder]: For 86108/86108 co-relation queries the response was YES. [2023-01-28 04:41:02,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39011 conditions, 5043 events. 2952/5043 cut-off events. For 86108/86108 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 31331 event pairs, 377 based on Foata normal form. 270/5313 useless extension candidates. Maximal degree in co-relation 38935. Up to 1916 conditions per place. [2023-01-28 04:41:02,243 INFO L137 encePairwiseOnDemand]: 255/267 looper letters, 363 selfloop transitions, 170 changer transitions 198/731 dead transitions. [2023-01-28 04:41:02,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 731 transitions, 11840 flow [2023-01-28 04:41:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-28 04:41:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-28 04:41:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3394 transitions. [2023-01-28 04:41:02,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38520031778458746 [2023-01-28 04:41:02,248 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3394 transitions. [2023-01-28 04:41:02,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3394 transitions. [2023-01-28 04:41:02,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:02,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3394 transitions. [2023-01-28 04:41:02,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 102.84848484848484) internal successors, (3394), 33 states have internal predecessors, (3394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:02,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 267.0) internal successors, (9078), 34 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:02,265 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 267.0) internal successors, (9078), 34 states have internal predecessors, (9078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:02,265 INFO L175 Difference]: Start difference. First operand has 205 places, 433 transitions, 6658 flow. Second operand 33 states and 3394 transitions. [2023-01-28 04:41:02,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 731 transitions, 11840 flow [2023-01-28 04:41:02,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 731 transitions, 11216 flow, removed 162 selfloop flow, removed 12 redundant places. [2023-01-28 04:41:02,505 INFO L231 Difference]: Finished difference. Result has 245 places, 334 transitions, 5276 flow [2023-01-28 04:41:02,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5276, PETRI_PLACES=245, PETRI_TRANSITIONS=334} [2023-01-28 04:41:02,506 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2023-01-28 04:41:02,506 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 334 transitions, 5276 flow [2023-01-28 04:41:02,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 98.05555555555556) internal successors, (1765), 18 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:02,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:02,507 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:02,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-01-28 04:41:02,707 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 [2023-01-28 04:41:02,707 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:02,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash -587102579, now seen corresponding path program 11 times [2023-01-28 04:41:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:02,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758040130] [2023-01-28 04:41:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:02,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:02,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758040130] [2023-01-28 04:41:02,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758040130] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908385626] [2023-01-28 04:41:02,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:41:02,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:02,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:02,849 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:02,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-01-28 04:41:02,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:41:02,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:02,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:41:02,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:03,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:03,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908385626] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:03,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:03,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-01-28 04:41:03,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760666849] [2023-01-28 04:41:03,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:03,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 04:41:03,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:03,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 04:41:03,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-01-28 04:41:03,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-28 04:41:03,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 334 transitions, 5276 flow. Second operand has 23 states, 23 states have (on average 97.34782608695652) internal successors, (2239), 23 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:03,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:03,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-28 04:41:03,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:06,620 INFO L130 PetriNetUnfolder]: 4415/7060 cut-off events. [2023-01-28 04:41:06,620 INFO L131 PetriNetUnfolder]: For 192078/192078 co-relation queries the response was YES. [2023-01-28 04:41:06,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65772 conditions, 7060 events. 4415/7060 cut-off events. For 192078/192078 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 41745 event pairs, 520 based on Foata normal form. 72/7132 useless extension candidates. Maximal degree in co-relation 65681. Up to 2588 conditions per place. [2023-01-28 04:41:06,682 INFO L137 encePairwiseOnDemand]: 256/267 looper letters, 614 selfloop transitions, 473 changer transitions 0/1087 dead transitions. [2023-01-28 04:41:06,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1087 transitions, 18766 flow [2023-01-28 04:41:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-01-28 04:41:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2023-01-28 04:41:06,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 5602 transitions. [2023-01-28 04:41:06,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38854210015258706 [2023-01-28 04:41:06,690 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 5602 transitions. [2023-01-28 04:41:06,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 5602 transitions. [2023-01-28 04:41:06,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:06,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 5602 transitions. [2023-01-28 04:41:06,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 103.74074074074075) internal successors, (5602), 54 states have internal predecessors, (5602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:06,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 267.0) internal successors, (14685), 55 states have internal predecessors, (14685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:06,708 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 267.0) internal successors, (14685), 55 states have internal predecessors, (14685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:06,708 INFO L175 Difference]: Start difference. First operand has 245 places, 334 transitions, 5276 flow. Second operand 54 states and 5602 transitions. [2023-01-28 04:41:06,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1087 transitions, 18766 flow [2023-01-28 04:41:07,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 1087 transitions, 14463 flow, removed 1773 selfloop flow, removed 27 redundant places. [2023-01-28 04:41:07,693 INFO L231 Difference]: Finished difference. Result has 268 places, 697 transitions, 11425 flow [2023-01-28 04:41:07,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=11425, PETRI_PLACES=268, PETRI_TRANSITIONS=697} [2023-01-28 04:41:07,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2023-01-28 04:41:07,694 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 697 transitions, 11425 flow [2023-01-28 04:41:07,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 97.34782608695652) internal successors, (2239), 23 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:07,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:07,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:07,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:07,901 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 [2023-01-28 04:41:07,901 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:07,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash 83929249, now seen corresponding path program 12 times [2023-01-28 04:41:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857781991] [2023-01-28 04:41:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857781991] [2023-01-28 04:41:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857781991] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664619838] [2023-01-28 04:41:08,080 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:41:08,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:08,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:08,081 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:08,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-01-28 04:41:08,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:41:08,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:08,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:41:08,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:08,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:08,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664619838] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:08,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-28 04:41:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031018337] [2023-01-28 04:41:08,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:41:08,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:41:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:41:08,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:41:08,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 697 transitions, 11425 flow. Second operand has 21 states, 21 states have (on average 99.95238095238095) internal successors, (2099), 21 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:08,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:08,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:41:08,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:11,067 INFO L130 PetriNetUnfolder]: 5724/9308 cut-off events. [2023-01-28 04:41:11,068 INFO L131 PetriNetUnfolder]: For 263685/263693 co-relation queries the response was YES. [2023-01-28 04:41:11,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84754 conditions, 9308 events. 5724/9308 cut-off events. For 263685/263693 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60197 event pairs, 862 based on Foata normal form. 74/9380 useless extension candidates. Maximal degree in co-relation 84645. Up to 4312 conditions per place. [2023-01-28 04:41:11,165 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 691 selfloop transitions, 307 changer transitions 0/1020 dead transitions. [2023-01-28 04:41:11,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1020 transitions, 18796 flow [2023-01-28 04:41:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 04:41:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 04:41:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1487 transitions. [2023-01-28 04:41:11,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39780631353665064 [2023-01-28 04:41:11,168 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1487 transitions. [2023-01-28 04:41:11,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1487 transitions. [2023-01-28 04:41:11,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:11,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1487 transitions. [2023-01-28 04:41:11,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.21428571428571) internal successors, (1487), 14 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:11,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:11,174 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 267.0) internal successors, (4005), 15 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:11,174 INFO L175 Difference]: Start difference. First operand has 268 places, 697 transitions, 11425 flow. Second operand 14 states and 1487 transitions. [2023-01-28 04:41:11,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1020 transitions, 18796 flow [2023-01-28 04:41:13,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1020 transitions, 15031 flow, removed 1689 selfloop flow, removed 10 redundant places. [2023-01-28 04:41:13,080 INFO L231 Difference]: Finished difference. Result has 277 places, 844 transitions, 11943 flow [2023-01-28 04:41:13,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=8690, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11943, PETRI_PLACES=277, PETRI_TRANSITIONS=844} [2023-01-28 04:41:13,080 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-01-28 04:41:13,080 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 844 transitions, 11943 flow [2023-01-28 04:41:13,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.95238095238095) internal successors, (2099), 21 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:13,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:13,081 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:13,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:13,281 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 [2023-01-28 04:41:13,281 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:13,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash 18824553, now seen corresponding path program 13 times [2023-01-28 04:41:13,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:13,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876072766] [2023-01-28 04:41:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:13,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876072766] [2023-01-28 04:41:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876072766] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230215106] [2023-01-28 04:41:13,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:41:13,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:13,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:13,425 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:13,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-01-28 04:41:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:13,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:41:13,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:13,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:13,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230215106] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:13,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:13,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-01-28 04:41:13,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671230978] [2023-01-28 04:41:13,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:13,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-01-28 04:41:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-01-28 04:41:13,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-01-28 04:41:13,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:41:13,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 844 transitions, 11943 flow. Second operand has 19 states, 19 states have (on average 100.05263157894737) internal successors, (1901), 19 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:13,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:13,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:41:13,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:16,174 INFO L130 PetriNetUnfolder]: 5730/9296 cut-off events. [2023-01-28 04:41:16,174 INFO L131 PetriNetUnfolder]: For 207516/207536 co-relation queries the response was YES. [2023-01-28 04:41:16,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76604 conditions, 9296 events. 5730/9296 cut-off events. For 207516/207536 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 59730 event pairs, 932 based on Foata normal form. 132/9421 useless extension candidates. Maximal degree in co-relation 76493. Up to 4517 conditions per place. [2023-01-28 04:41:16,345 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 755 selfloop transitions, 248 changer transitions 0/1025 dead transitions. [2023-01-28 04:41:16,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1025 transitions, 16678 flow [2023-01-28 04:41:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:41:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:41:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-01-28 04:41:16,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953391593841032 [2023-01-28 04:41:16,347 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-01-28 04:41:16,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-01-28 04:41:16,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:16,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-01-28 04:41:16,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:16,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:16,350 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:16,350 INFO L175 Difference]: Start difference. First operand has 277 places, 844 transitions, 11943 flow. Second operand 9 states and 950 transitions. [2023-01-28 04:41:16,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 1025 transitions, 16678 flow [2023-01-28 04:41:17,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1025 transitions, 16015 flow, removed 229 selfloop flow, removed 5 redundant places. [2023-01-28 04:41:17,406 INFO L231 Difference]: Finished difference. Result has 275 places, 855 transitions, 12611 flow [2023-01-28 04:41:17,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=11155, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12611, PETRI_PLACES=275, PETRI_TRANSITIONS=855} [2023-01-28 04:41:17,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-01-28 04:41:17,407 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 855 transitions, 12611 flow [2023-01-28 04:41:17,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.05263157894737) internal successors, (1901), 19 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:17,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:17,407 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:17,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:17,607 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 [2023-01-28 04:41:17,608 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:17,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash 725112289, now seen corresponding path program 14 times [2023-01-28 04:41:17,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:17,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303549629] [2023-01-28 04:41:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:17,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303549629] [2023-01-28 04:41:17,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303549629] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:17,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011542375] [2023-01-28 04:41:17,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 04:41:17,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:17,753 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:17,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-01-28 04:41:17,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:41:17,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:17,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:41:17,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:17,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011542375] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:18,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:18,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-01-28 04:41:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533093335] [2023-01-28 04:41:18,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:18,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 04:41:18,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 04:41:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-01-28 04:41:18,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:41:18,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 855 transitions, 12611 flow. Second operand has 22 states, 22 states have (on average 99.81818181818181) internal successors, (2196), 22 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:18,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:18,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:41:18,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:20,808 INFO L130 PetriNetUnfolder]: 5626/9058 cut-off events. [2023-01-28 04:41:20,809 INFO L131 PetriNetUnfolder]: For 195468/195478 co-relation queries the response was YES. [2023-01-28 04:41:20,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75314 conditions, 9058 events. 5626/9058 cut-off events. For 195468/195478 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 57225 event pairs, 880 based on Foata normal form. 92/9148 useless extension candidates. Maximal degree in co-relation 75201. Up to 4313 conditions per place. [2023-01-28 04:41:20,902 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 632 selfloop transitions, 311 changer transitions 0/965 dead transitions. [2023-01-28 04:41:20,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 965 transitions, 15996 flow [2023-01-28 04:41:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 04:41:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 04:41:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1063 transitions. [2023-01-28 04:41:20,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39812734082397006 [2023-01-28 04:41:20,904 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1063 transitions. [2023-01-28 04:41:20,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1063 transitions. [2023-01-28 04:41:20,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:20,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1063 transitions. [2023-01-28 04:41:20,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 106.3) internal successors, (1063), 10 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:20,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:20,909 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 267.0) internal successors, (2937), 11 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:20,909 INFO L175 Difference]: Start difference. First operand has 275 places, 855 transitions, 12611 flow. Second operand 10 states and 1063 transitions. [2023-01-28 04:41:20,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 965 transitions, 15996 flow [2023-01-28 04:41:22,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 965 transitions, 15687 flow, removed 86 selfloop flow, removed 6 redundant places. [2023-01-28 04:41:22,054 INFO L231 Difference]: Finished difference. Result has 277 places, 854 transitions, 12905 flow [2023-01-28 04:41:22,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=12283, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=854, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12905, PETRI_PLACES=277, PETRI_TRANSITIONS=854} [2023-01-28 04:41:22,055 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-01-28 04:41:22,055 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 854 transitions, 12905 flow [2023-01-28 04:41:22,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 99.81818181818181) internal successors, (2196), 22 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:22,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:22,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:22,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:22,257 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 [2023-01-28 04:41:22,258 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:22,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1285888269, now seen corresponding path program 15 times [2023-01-28 04:41:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828672513] [2023-01-28 04:41:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:22,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:22,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828672513] [2023-01-28 04:41:22,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828672513] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301347553] [2023-01-28 04:41:22,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:41:22,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:22,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:22,399 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:22,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-01-28 04:41:22,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:41:22,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:22,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:41:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:22,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:22,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:22,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301347553] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:22,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:22,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 04:41:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560263568] [2023-01-28 04:41:22,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:22,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:41:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:41:22,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:41:22,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:41:22,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 854 transitions, 12905 flow. Second operand has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:22,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:22,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:41:22,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:25,134 INFO L130 PetriNetUnfolder]: 5534/8828 cut-off events. [2023-01-28 04:41:25,135 INFO L131 PetriNetUnfolder]: For 194917/194929 co-relation queries the response was YES. [2023-01-28 04:41:25,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73845 conditions, 8828 events. 5534/8828 cut-off events. For 194917/194929 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 54579 event pairs, 938 based on Foata normal form. 78/8901 useless extension candidates. Maximal degree in co-relation 73734. Up to 4517 conditions per place. [2023-01-28 04:41:25,221 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 704 selfloop transitions, 225 changer transitions 0/951 dead transitions. [2023-01-28 04:41:25,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 951 transitions, 16062 flow [2023-01-28 04:41:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:41:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:41:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-01-28 04:41:25,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953391593841032 [2023-01-28 04:41:25,222 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-01-28 04:41:25,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-01-28 04:41:25,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:25,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-01-28 04:41:25,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:25,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:25,226 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:25,226 INFO L175 Difference]: Start difference. First operand has 277 places, 854 transitions, 12905 flow. Second operand 9 states and 950 transitions. [2023-01-28 04:41:25,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 951 transitions, 16062 flow [2023-01-28 04:41:26,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 951 transitions, 15390 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-01-28 04:41:26,344 INFO L231 Difference]: Finished difference. Result has 277 places, 864 transitions, 12898 flow [2023-01-28 04:41:26,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=12109, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12898, PETRI_PLACES=277, PETRI_TRANSITIONS=864} [2023-01-28 04:41:26,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-01-28 04:41:26,345 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 864 transitions, 12898 flow [2023-01-28 04:41:26,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:26,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:26,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:26,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:26,552 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 [2023-01-28 04:41:26,552 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:26,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:26,552 INFO L85 PathProgramCache]: Analyzing trace with hash 202816105, now seen corresponding path program 16 times [2023-01-28 04:41:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:26,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827583522] [2023-01-28 04:41:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:26,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:26,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827583522] [2023-01-28 04:41:26,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827583522] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:26,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274446971] [2023-01-28 04:41:26,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:41:26,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:26,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:26,683 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:26,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-01-28 04:41:26,764 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:41:26,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:26,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:41:26,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:26,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:26,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:26,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274446971] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:26,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:26,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-01-28 04:41:26,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719922128] [2023-01-28 04:41:26,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:26,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 04:41:26,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 04:41:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-01-28 04:41:26,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-28 04:41:26,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 864 transitions, 12898 flow. Second operand has 18 states, 18 states have (on average 97.61111111111111) internal successors, (1757), 18 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:26,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:26,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-28 04:41:26,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:30,302 INFO L130 PetriNetUnfolder]: 7040/11245 cut-off events. [2023-01-28 04:41:30,303 INFO L131 PetriNetUnfolder]: For 267989/267989 co-relation queries the response was YES. [2023-01-28 04:41:30,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96248 conditions, 11245 events. 7040/11245 cut-off events. For 267989/267989 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 72420 event pairs, 579 based on Foata normal form. 90/11335 useless extension candidates. Maximal degree in co-relation 96136. Up to 4318 conditions per place. [2023-01-28 04:41:30,424 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 655 selfloop transitions, 559 changer transitions 0/1214 dead transitions. [2023-01-28 04:41:30,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 1214 transitions, 21315 flow [2023-01-28 04:41:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-28 04:41:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-28 04:41:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1940 transitions. [2023-01-28 04:41:30,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824167159471713 [2023-01-28 04:41:30,427 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1940 transitions. [2023-01-28 04:41:30,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1940 transitions. [2023-01-28 04:41:30,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:30,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1940 transitions. [2023-01-28 04:41:30,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 102.10526315789474) internal successors, (1940), 19 states have internal predecessors, (1940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:30,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:30,432 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 267.0) internal successors, (5340), 20 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:30,432 INFO L175 Difference]: Start difference. First operand has 277 places, 864 transitions, 12898 flow. Second operand 19 states and 1940 transitions. [2023-01-28 04:41:30,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 1214 transitions, 21315 flow [2023-01-28 04:41:32,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1214 transitions, 20975 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-01-28 04:41:32,053 INFO L231 Difference]: Finished difference. Result has 298 places, 971 transitions, 16394 flow [2023-01-28 04:41:32,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=12637, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=864, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=16394, PETRI_PLACES=298, PETRI_TRANSITIONS=971} [2023-01-28 04:41:32,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2023-01-28 04:41:32,054 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 971 transitions, 16394 flow [2023-01-28 04:41:32,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 97.61111111111111) internal successors, (1757), 18 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:32,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:32,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:32,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:32,260 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 [2023-01-28 04:41:32,261 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:32,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2030424355, now seen corresponding path program 17 times [2023-01-28 04:41:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:32,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502131954] [2023-01-28 04:41:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502131954] [2023-01-28 04:41:32,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502131954] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140847564] [2023-01-28 04:41:32,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 04:41:32,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:32,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:32,397 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:32,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-01-28 04:41:32,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 04:41:32,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:32,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 04:41:32,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:32,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:32,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140847564] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:32,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:32,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-01-28 04:41:32,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180355948] [2023-01-28 04:41:32,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:32,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:41:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:32,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:41:32,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:41:32,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 267 [2023-01-28 04:41:32,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 971 transitions, 16394 flow. Second operand has 20 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:32,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:32,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 267 [2023-01-28 04:41:32,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:37,358 INFO L130 PetriNetUnfolder]: 7899/12524 cut-off events. [2023-01-28 04:41:37,358 INFO L131 PetriNetUnfolder]: For 344416/344416 co-relation queries the response was YES. [2023-01-28 04:41:37,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114547 conditions, 12524 events. 7899/12524 cut-off events. For 344416/344416 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 80917 event pairs, 519 based on Foata normal form. 138/12662 useless extension candidates. Maximal degree in co-relation 114426. Up to 4890 conditions per place. [2023-01-28 04:41:37,624 INFO L137 encePairwiseOnDemand]: 257/267 looper letters, 684 selfloop transitions, 749 changer transitions 0/1433 dead transitions. [2023-01-28 04:41:37,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 1433 transitions, 27234 flow [2023-01-28 04:41:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-28 04:41:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-28 04:41:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3777 transitions. [2023-01-28 04:41:37,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3823261463710902 [2023-01-28 04:41:37,628 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3777 transitions. [2023-01-28 04:41:37,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3777 transitions. [2023-01-28 04:41:37,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:37,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3777 transitions. [2023-01-28 04:41:37,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 102.08108108108108) internal successors, (3777), 37 states have internal predecessors, (3777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:37,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 267.0) internal successors, (10146), 38 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:37,640 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 267.0) internal successors, (10146), 38 states have internal predecessors, (10146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:37,640 INFO L175 Difference]: Start difference. First operand has 298 places, 971 transitions, 16394 flow. Second operand 37 states and 3777 transitions. [2023-01-28 04:41:37,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 1433 transitions, 27234 flow [2023-01-28 04:41:39,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 1433 transitions, 26536 flow, removed 327 selfloop flow, removed 5 redundant places. [2023-01-28 04:41:40,002 INFO L231 Difference]: Finished difference. Result has 335 places, 1110 transitions, 21100 flow [2023-01-28 04:41:40,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=15764, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=623, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21100, PETRI_PLACES=335, PETRI_TRANSITIONS=1110} [2023-01-28 04:41:40,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2023-01-28 04:41:40,003 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 1110 transitions, 21100 flow [2023-01-28 04:41:40,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.3) internal successors, (1946), 20 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:40,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:40,004 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:40,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:40,209 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 [2023-01-28 04:41:40,209 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:40,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:40,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1869960955, now seen corresponding path program 18 times [2023-01-28 04:41:40,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:40,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786606176] [2023-01-28 04:41:40,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:40,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:40,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786606176] [2023-01-28 04:41:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786606176] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:40,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076168251] [2023-01-28 04:41:40,356 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 04:41:40,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:40,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:40,361 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:40,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-01-28 04:41:40,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 04:41:40,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:40,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:41:40,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:40,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 04:41:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076168251] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:40,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:40,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-01-28 04:41:40,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630467469] [2023-01-28 04:41:40,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:40,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 04:41:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 04:41:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-01-28 04:41:40,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:41:40,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 1110 transitions, 21100 flow. Second operand has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:40,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:40,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:41:40,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:44,642 INFO L130 PetriNetUnfolder]: 7761/12310 cut-off events. [2023-01-28 04:41:44,642 INFO L131 PetriNetUnfolder]: For 360996/361012 co-relation queries the response was YES. [2023-01-28 04:41:44,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117696 conditions, 12310 events. 7761/12310 cut-off events. For 360996/361012 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 79219 event pairs, 2104 based on Foata normal form. 54/12357 useless extension candidates. Maximal degree in co-relation 117567. Up to 10566 conditions per place. [2023-01-28 04:41:44,794 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 873 selfloop transitions, 260 changer transitions 0/1169 dead transitions. [2023-01-28 04:41:44,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1169 transitions, 23929 flow [2023-01-28 04:41:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 04:41:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 04:41:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 943 transitions. [2023-01-28 04:41:44,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924261339991677 [2023-01-28 04:41:44,796 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 943 transitions. [2023-01-28 04:41:44,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 943 transitions. [2023-01-28 04:41:44,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:44,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 943 transitions. [2023-01-28 04:41:44,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.77777777777777) internal successors, (943), 9 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:44,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:44,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:44,799 INFO L175 Difference]: Start difference. First operand has 335 places, 1110 transitions, 21100 flow. Second operand 9 states and 943 transitions. [2023-01-28 04:41:44,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1169 transitions, 23929 flow [2023-01-28 04:41:47,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 1169 transitions, 22370 flow, removed 467 selfloop flow, removed 12 redundant places. [2023-01-28 04:41:47,694 INFO L231 Difference]: Finished difference. Result has 332 places, 1115 transitions, 20108 flow [2023-01-28 04:41:47,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=19337, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=840, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20108, PETRI_PLACES=332, PETRI_TRANSITIONS=1115} [2023-01-28 04:41:47,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2023-01-28 04:41:47,695 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 1115 transitions, 20108 flow [2023-01-28 04:41:47,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.0) internal successors, (2000), 20 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:47,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:47,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:47,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:47,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:47,896 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:47,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1125136579, now seen corresponding path program 19 times [2023-01-28 04:41:47,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:47,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873226519] [2023-01-28 04:41:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:47,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:41:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:48,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873226519] [2023-01-28 04:41:48,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873226519] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:48,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137698903] [2023-01-28 04:41:48,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 04:41:48,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:48,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:48,032 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:48,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-01-28 04:41:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:48,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 04:41:48,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:41:48,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:41:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:41:48,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137698903] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:41:48,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:41:48,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-01-28 04:41:48,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741063900] [2023-01-28 04:41:48,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:41:48,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 04:41:48,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:41:48,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 04:41:48,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2023-01-28 04:41:48,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 267 [2023-01-28 04:41:48,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 1115 transitions, 20108 flow. Second operand has 21 states, 21 states have (on average 100.19047619047619) internal successors, (2104), 21 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:48,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:41:48,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 267 [2023-01-28 04:41:48,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:41:52,281 INFO L130 PetriNetUnfolder]: 7702/12151 cut-off events. [2023-01-28 04:41:52,281 INFO L131 PetriNetUnfolder]: For 331261/331277 co-relation queries the response was YES. [2023-01-28 04:41:52,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112838 conditions, 12151 events. 7702/12151 cut-off events. For 331261/331277 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 77734 event pairs, 846 based on Foata normal form. 46/12190 useless extension candidates. Maximal degree in co-relation 112708. Up to 4778 conditions per place. [2023-01-28 04:41:52,418 INFO L137 encePairwiseOnDemand]: 259/267 looper letters, 611 selfloop transitions, 691 changer transitions 0/1338 dead transitions. [2023-01-28 04:41:52,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 1338 transitions, 25752 flow [2023-01-28 04:41:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 04:41:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 04:41:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1808 transitions. [2023-01-28 04:41:52,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398325622383785 [2023-01-28 04:41:52,420 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1808 transitions. [2023-01-28 04:41:52,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1808 transitions. [2023-01-28 04:41:52,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:41:52,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1808 transitions. [2023-01-28 04:41:52,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 106.3529411764706) internal successors, (1808), 17 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:52,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:52,432 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:52,432 INFO L175 Difference]: Start difference. First operand has 332 places, 1115 transitions, 20108 flow. Second operand 17 states and 1808 transitions. [2023-01-28 04:41:52,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 1338 transitions, 25752 flow [2023-01-28 04:41:55,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 1338 transitions, 25210 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-01-28 04:41:55,234 INFO L231 Difference]: Finished difference. Result has 340 places, 1127 transitions, 21243 flow [2023-01-28 04:41:55,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=19420, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=21243, PETRI_PLACES=340, PETRI_TRANSITIONS=1127} [2023-01-28 04:41:55,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-01-28 04:41:55,235 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 1127 transitions, 21243 flow [2023-01-28 04:41:55,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 100.19047619047619) internal successors, (2104), 21 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:41:55,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:41:55,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:41:55,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-01-28 04:41:55,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-01-28 04:41:55,436 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:41:55,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:41:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash -153554243, now seen corresponding path program 3 times [2023-01-28 04:41:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:41:55,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691630394] [2023-01-28 04:41:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:41:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:41:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:41:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:41:57,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:41:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691630394] [2023-01-28 04:41:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691630394] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:41:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366440700] [2023-01-28 04:41:57,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 04:41:57,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:41:57,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:41:57,272 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:41:57,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-01-28 04:41:57,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 04:41:57,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:41:57,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 59 conjunts are in the unsatisfiable core [2023-01-28 04:41:57,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:41:57,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-28 04:41:57,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 04:41:57,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:41:57,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-28 04:41:57,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:41:57,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-01-28 04:41:59,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:41:59,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 89 [2023-01-28 04:41:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:41:59,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:42:07,822 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse11 (+ c_~max2~0 1))) (let ((.cse8 (<= c_~max3~0 c_~max2~0)) (.cse7 (= c_~max1~0 c_~max2~0)) (.cse5 (<= .cse11 c_~max3~0)) (.cse4 (= c_~max1~0 c_~max3~0)) (.cse3 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork1_~i~0 4)))) (and (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse0 (select .cse2 c_~A~0.offset))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse1 (select .cse2 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= (+ .cse0 1) .cse1) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse1 c_~max3~0)))) (<= .cse0 c_~max2~0) (< c_~max1~0 (select .cse2 .cse3)) (= c_~max1~0 .cse0))))) (or (and .cse4 .cse5) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse6 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (or (< c_~max3~0 (select .cse6 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< c_~max2~0 (select .cse6 c_~A~0.offset)) (< c_~max1~0 (select .cse6 .cse3))))) (and .cse7 .cse8)) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse9 (select .cse12 .cse3))) (or (= .cse9 c_~max2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse10 (select .cse12 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse10 c_~max3~0) (<= .cse11 .cse10)))) (< c_~max2~0 (select .cse12 c_~A~0.offset)) (<= .cse9 c_~max1~0))))) (or .cse8 (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse14 (select .cse13 .cse3))) (or (< c_~max3~0 (select .cse13 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (= .cse14 c_~max3~0) (< c_~max2~0 (select .cse13 c_~A~0.offset)) (<= .cse14 c_~max1~0)))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (or (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse15 (select .cse16 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (= c_~max1~0 .cse15) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse15 c_~max3~0) (<= .cse15 c_~max2~0)))) (< c_~max2~0 (select .cse16 c_~A~0.offset)) (< c_~max1~0 (select .cse16 .cse3))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse18 (select .cse20 c_~A~0.offset)) (.cse17 (select .cse20 .cse3))) (or (= .cse17 .cse18) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse19 (select .cse20 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (<= (+ .cse18 1) .cse19) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse19 c_~max3~0)))) (<= .cse18 c_~max2~0) (<= .cse17 c_~max1~0))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse24 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse21 (select .cse24 c_~A~0.offset)) (.cse23 (select .cse24 .cse3))) (or (<= .cse21 c_~max2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse22 (select .cse24 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (<= .cse22 .cse21) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse22 c_~max3~0) (= .cse23 .cse22)))) (<= .cse23 c_~max1~0))))) (forall ((v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (forall ((v_ArrVal_1179 (Array Int Int))) (let ((.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse26 (select .cse25 c_~A~0.offset))) (or (< c_~max3~0 (select .cse25 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (<= (+ .cse26 1) c_~max3~0) (<= .cse26 c_~max2~0) (< c_~max1~0 (select .cse25 .cse3)) (= c_~max1~0 .cse26))))))) (forall ((v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (forall ((v_ArrVal_1179 (Array Int Int))) (let ((.cse27 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse28 (select .cse27 c_~A~0.offset)) (.cse29 (select .cse27 .cse3))) (or (< c_~max3~0 (select .cse27 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (<= c_~max3~0 .cse28) (= .cse29 c_~max3~0) (<= .cse28 c_~max2~0) (<= .cse29 c_~max1~0))))))) (forall ((v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (forall ((v_ArrVal_1179 (Array Int Int))) (let ((.cse32 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse31 (select .cse32 c_~A~0.offset)) (.cse30 (select .cse32 .cse3))) (or (= .cse30 .cse31) (< c_~max3~0 (select .cse32 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (<= (+ .cse31 1) c_~max3~0) (<= .cse31 c_~max2~0) (<= .cse30 c_~max1~0))))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse33 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse35 (select .cse33 .cse3))) (or (< c_~max2~0 (select .cse33 c_~A~0.offset)) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse34 (select .cse33 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse34 c_~max3~0) (<= .cse34 c_~max2~0) (= .cse35 .cse34)))) (<= .cse35 c_~max1~0))))) (or (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse37 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse36 (select .cse37 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse36 c_~max3~0) (<= .cse11 .cse36) (< c_~max2~0 (select .cse37 c_~A~0.offset)) (< c_~max1~0 (select .cse37 .cse3)))))) .cse7) (or .cse5 (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse39 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse38 (select .cse39 .cse3))) (or (= .cse38 c_~max2~0) (< c_~max3~0 (select .cse39 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (< c_~max2~0 (select .cse39 c_~A~0.offset)) (<= .cse38 c_~max1~0)))))) (or .cse4 (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse40 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse41 (select .cse40 c_~A~0.offset))) (or (< c_~max3~0 (select .cse40 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4)))) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (<= c_~max3~0 .cse41) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse41 c_~max2~0) (< c_~max1~0 (select .cse40 .cse3))))))) (forall ((v_ArrVal_1179 (Array Int Int)) (v_ArrVal_1178 (Array Int Int))) (let ((.cse44 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1179) c_~A~0.base))) (let ((.cse42 (select .cse44 c_~A~0.offset))) (or (<= .cse42 c_~max2~0) (forall ((v_thread3Thread1of1ForFork0_~i~2_113 Int)) (let ((.cse43 (select .cse44 (+ c_~A~0.offset (* v_thread3Thread1of1ForFork0_~i~2_113 4))))) (or (= c_~max1~0 .cse43) (< c_~M~0 v_thread3Thread1of1ForFork0_~i~2_113) (<= .cse43 .cse42) (< (+ v_thread3Thread1of1ForFork0_~i~2_113 1) c_~N~0) (<= .cse43 c_~max3~0)))) (< c_~max1~0 (select .cse44 .cse3))))))))) is different from false [2023-01-28 04:42:50,157 WARN L222 SmtUtils]: Spent 40.13s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:43:22,869 WARN L222 SmtUtils]: Spent 26.63s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 04:43:32,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:32,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 128 [2023-01-28 04:43:32,106 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:32,107 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 5759 treesize of output 5499 [2023-01-28 04:43:32,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:32,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 319 treesize of output 311 [2023-01-28 04:43:32,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:32,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 614 treesize of output 542 [2023-01-28 04:43:32,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:32,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 283 treesize of output 255 [2023-01-28 04:43:34,396 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:34,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 143 [2023-01-28 04:43:34,435 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:34,436 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 2999 treesize of output 2851 [2023-01-28 04:43:34,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:34,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 322 treesize of output 286 [2023-01-28 04:43:34,595 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:34,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 279 treesize of output 267 [2023-01-28 04:43:34,648 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:34,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 343 treesize of output 255 [2023-01-28 04:43:36,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:36,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 102 [2023-01-28 04:43:36,677 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:36,678 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:36,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:36,697 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 170 treesize of output 144 [2023-01-28 04:43:36,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:36,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 56 treesize of output 52 [2023-01-28 04:43:37,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:37,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 95 [2023-01-28 04:43:37,306 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:37,307 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:37,328 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:37,329 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 122 treesize of output 110 [2023-01-28 04:43:37,359 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:37,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 52 [2023-01-28 04:43:37,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:37,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-01-28 04:43:37,761 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:37,761 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:37,786 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-01-28 04:43:37,786 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 155 treesize of output 123 [2023-01-28 04:43:37,809 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-01-28 04:43:37,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 69 treesize of output 43 [2023-01-28 04:43:37,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:37,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 94 [2023-01-28 04:43:37,867 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:37,867 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:37,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:37,887 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 166 treesize of output 142 [2023-01-28 04:43:37,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:37,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 54 treesize of output 52 [2023-01-28 04:43:38,174 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:38,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 117 [2023-01-28 04:43:38,185 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,185 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,205 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-28 04:43:38,205 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 155 treesize of output 126 [2023-01-28 04:43:38,224 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 04:43:38,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 69 treesize of output 49 [2023-01-28 04:43:38,280 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 1 [2023-01-28 04:43:38,294 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 209 treesize of output 1 [2023-01-28 04:43:38,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:38,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 246 treesize of output 150 [2023-01-28 04:43:38,318 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,319 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,337 INFO L321 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-01-28 04:43:38,337 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 215 treesize of output 164 [2023-01-28 04:43:38,363 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 04:43:38,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 49 [2023-01-28 04:43:38,394 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 188 treesize of output 1 [2023-01-28 04:43:38,410 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 1 [2023-01-28 04:43:38,424 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 1 [2023-01-28 04:43:38,440 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 1 [2023-01-28 04:43:38,458 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 1 [2023-01-28 04:43:38,471 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 1 [2023-01-28 04:43:38,489 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 1 [2023-01-28 04:43:38,508 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 1 [2023-01-28 04:43:38,527 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:38,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 111 [2023-01-28 04:43:38,534 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,535 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,549 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 04:43:38,550 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 143 treesize of output 117 [2023-01-28 04:43:38,583 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 04:43:38,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 63 treesize of output 49 [2023-01-28 04:43:38,622 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:43:38,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 77 [2023-01-28 04:43:38,631 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,631 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:43:38,646 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 04:43:38,646 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 97 treesize of output 79 [2023-01-28 04:43:38,667 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2023-01-28 04:43:38,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 43 treesize of output 33 [2023-01-28 04:43:38,722 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 1 [2023-01-28 04:43:38,743 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 1 [2023-01-28 04:43:38,764 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 1 [2023-01-28 04:43:38,793 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 196 treesize of output 1 [2023-01-28 04:43:38,819 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 1 [2023-01-28 04:43:38,848 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 1 [2023-01-28 04:43:38,874 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 1 [2023-01-28 04:43:38,894 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 1 [2023-01-28 04:43:38,923 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 162 treesize of output 1 [2023-01-28 04:43:38,945 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 1 [2023-01-28 04:43:38,972 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 1 [2023-01-28 04:43:38,998 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-28 04:43:38,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 1 [2023-01-28 04:43:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:43:39,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366440700] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 04:43:39,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 04:43:39,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 39 [2023-01-28 04:43:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748537161] [2023-01-28 04:43:39,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 04:43:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-01-28 04:43:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 04:43:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-01-28 04:43:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1404, Unknown=10, NotChecked=76, Total=1640 [2023-01-28 04:43:39,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 267 [2023-01-28 04:43:39,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1127 transitions, 21243 flow. Second operand has 41 states, 41 states have (on average 70.82926829268293) internal successors, (2904), 41 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:43:39,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 04:43:39,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 267 [2023-01-28 04:43:39,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 04:44:09,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:12,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:17,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:20,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:31,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:33,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:44,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:51,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:54,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:57,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:44:59,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:01,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:04,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:06,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:10,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:34,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:36,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:46,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:45:52,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:02,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:04,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:07,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:09,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:13,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:16,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:34,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:41,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:44,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:47,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:48,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:51,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:54,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:57,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:46:59,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:11,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:14,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:17,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:19,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:22,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:24,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:27,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:29,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:31,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:33,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:36,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:40,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:41,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:44,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:46,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:49,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:52,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:55,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 04:47:57,685 INFO L130 PetriNetUnfolder]: 10193/15998 cut-off events. [2023-01-28 04:47:57,685 INFO L131 PetriNetUnfolder]: For 430356/430356 co-relation queries the response was YES. [2023-01-28 04:47:57,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150803 conditions, 15998 events. 10193/15998 cut-off events. For 430356/430356 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 106003 event pairs, 1005 based on Foata normal form. 9/16007 useless extension candidates. Maximal degree in co-relation 150674. Up to 13202 conditions per place. [2023-01-28 04:47:57,939 INFO L137 encePairwiseOnDemand]: 253/267 looper letters, 1367 selfloop transitions, 521 changer transitions 8/1896 dead transitions. [2023-01-28 04:47:57,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 1896 transitions, 37845 flow [2023-01-28 04:47:57,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 04:47:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 04:47:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3045 transitions. [2023-01-28 04:47:57,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2924229328723711 [2023-01-28 04:47:57,943 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3045 transitions. [2023-01-28 04:47:57,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3045 transitions. [2023-01-28 04:47:57,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 04:47:57,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3045 transitions. [2023-01-28 04:47:57,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 78.07692307692308) internal successors, (3045), 39 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:47:57,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 267.0) internal successors, (10680), 40 states have internal predecessors, (10680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:47:57,954 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 267.0) internal successors, (10680), 40 states have internal predecessors, (10680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:47:57,954 INFO L175 Difference]: Start difference. First operand has 340 places, 1127 transitions, 21243 flow. Second operand 39 states and 3045 transitions. [2023-01-28 04:47:57,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 1896 transitions, 37845 flow [2023-01-28 04:48:03,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 1896 transitions, 35941 flow, removed 54 selfloop flow, removed 13 redundant places. [2023-01-28 04:48:04,017 INFO L231 Difference]: Finished difference. Result has 391 places, 1581 transitions, 31015 flow [2023-01-28 04:48:04,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=19964, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=827, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=31015, PETRI_PLACES=391, PETRI_TRANSITIONS=1581} [2023-01-28 04:48:04,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2023-01-28 04:48:04,019 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 1581 transitions, 31015 flow [2023-01-28 04:48:04,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 70.82926829268293) internal successors, (2904), 41 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 04:48:04,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 04:48:04,019 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 04:48:04,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-01-28 04:48:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-01-28 04:48:04,220 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 04:48:04,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 04:48:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -117819345, now seen corresponding path program 4 times [2023-01-28 04:48:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 04:48:04,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146161990] [2023-01-28 04:48:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 04:48:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 04:48:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 04:48:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 04:48:05,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 04:48:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146161990] [2023-01-28 04:48:05,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146161990] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 04:48:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928370510] [2023-01-28 04:48:05,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 04:48:05,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 04:48:05,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 04:48:05,645 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 04:48:05,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-01-28 04:48:05,761 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 04:48:05,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 04:48:05,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 37 conjunts are in the unsatisfiable core [2023-01-28 04:48:05,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 04:48:06,965 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 04:48:06,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 04:48:06,969 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 04:48:06,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 73 [2023-01-28 04:48:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 04:48:07,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 04:48:12,198 INFO L321 Elim1Store]: treesize reduction 10, result has 98.4 percent of original size [2023-01-28 04:48:12,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 685 treesize of output 943 [2023-01-28 04:49:38,669 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-01-28 04:52:37,834 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2023-01-28 04:53:26,467 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:53:26,468 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 04:53:26,486 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 04:53:26,488 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 04:53:26,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-01-28 04:53:26,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-01-28 04:53:26,694 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 85ms.. [2023-01-28 04:53:26,696 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 04:53:26,696 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 04:53:26,696 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 04:53:26,696 INFO L445 BasicCegarLoop]: Path program histogram: [19, 4, 2, 1, 1] [2023-01-28 04:53:26,698 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 04:53:26,698 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 04:53:26,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 04:53:26 BasicIcfg [2023-01-28 04:53:26,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 04:53:26,700 INFO L158 Benchmark]: Toolchain (without parser) took 833111.32ms. Allocated memory was 373.3MB in the beginning and 9.1GB in the end (delta: 8.7GB). Free memory was 333.6MB in the beginning and 3.4GB in the end (delta: -3.1GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. [2023-01-28 04:53:26,701 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:53:26,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.73ms. Allocated memory is still 373.3MB. Free memory was 333.6MB in the beginning and 321.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 04:53:26,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.68ms. Allocated memory is still 373.3MB. Free memory was 321.9MB in the beginning and 320.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 04:53:26,701 INFO L158 Benchmark]: Boogie Preprocessor took 24.82ms. Allocated memory is still 373.3MB. Free memory was 320.1MB in the beginning and 318.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 04:53:26,701 INFO L158 Benchmark]: RCFGBuilder took 535.38ms. Allocated memory is still 373.3MB. Free memory was 318.2MB in the beginning and 297.4MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 04:53:26,701 INFO L158 Benchmark]: TraceAbstraction took 832309.54ms. Allocated memory was 373.3MB in the beginning and 9.1GB in the end (delta: 8.7GB). Free memory was 296.7MB in the beginning and 3.4GB in the end (delta: -3.1GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. [2023-01-28 04:53:26,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 208.73ms. Allocated memory is still 373.3MB. Free memory was 333.6MB in the beginning and 321.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.68ms. Allocated memory is still 373.3MB. Free memory was 321.9MB in the beginning and 320.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 24.82ms. Allocated memory is still 373.3MB. Free memory was 320.1MB in the beginning and 318.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 535.38ms. Allocated memory is still 373.3MB. Free memory was 318.2MB in the beginning and 297.4MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 832309.54ms. Allocated memory was 373.3MB in the beginning and 9.1GB in the end (delta: 8.7GB). Free memory was 296.7MB in the beginning and 3.4GB in the end (delta: -3.1GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 130 PlacesBefore, 30 PlacesAfterwards, 132 TransitionsBefore, 24 TransitionsAfterwards, 1320 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 122 TotalNumberOfCompositions, 1523 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1423, independent: 1404, independent conditional: 0, independent unconditional: 1404, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 717, independent: 708, independent conditional: 0, independent unconditional: 708, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1423, independent: 696, independent conditional: 0, independent unconditional: 696, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 717, unknown conditional: 0, unknown unconditional: 717] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 85ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 85ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 85ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 85ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 164 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: 832.1s, OverallIterations: 27, TraceHistogramMax: 2, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 339.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 228 mSolverCounterUnknown, 4419 SdHoareTripleChecker+Valid, 148.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4419 mSDsluCounter, 1017 SdHoareTripleChecker+Invalid, 145.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 788 IncrementalHoareTripleChecker+Unchecked, 881 mSDsCounter, 208 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17173 IncrementalHoareTripleChecker+Invalid, 18397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 208 mSolverCounterUnsat, 136 mSDtfsCounter, 17173 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1697 GetRequests, 861 SyntacticMatches, 46 SemanticMatches, 790 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 7817 ImplicationChecksByTransitivity, 245.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31015occurred in iteration=26, InterpolantAutomatonStates: 438, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 157.0s InterpolantComputationTime, 1214 NumberOfCodeBlocks, 1197 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 1714 ConstructedInterpolants, 38 QuantifiedInterpolants, 44934 SizeOfPredicates, 263 NumberOfNonLiveVariables, 5353 ConjunctsInSsa, 471 ConjunctsInUnsatCore, 75 InterpolantComputations, 4 PerfectInterpolantSequences, 161/358 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