./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 21:08:49,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 21:08:49,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 21:08:49,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 21:08:49,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 21:08:49,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 21:08:49,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 21:08:49,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 21:08:49,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 21:08:49,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 21:08:49,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 21:08:49,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 21:08:49,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 21:08:49,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 21:08:49,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 21:08:49,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 21:08:49,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 21:08:49,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 21:08:49,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 21:08:49,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 21:08:49,862 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 21:08:49,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 21:08:49,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 21:08:49,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 21:08:49,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 21:08:49,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 21:08:49,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 21:08:49,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 21:08:49,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 21:08:49,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 21:08:49,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 21:08:49,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 21:08:49,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 21:08:49,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 21:08:49,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 21:08:49,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 21:08:49,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 21:08:49,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 21:08:49,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 21:08:49,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 21:08:49,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 21:08:49,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 21:08:49,912 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 21:08:49,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 21:08:49,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 21:08:49,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 21:08:49,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 21:08:49,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 21:08:49,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 21:08:49,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 21:08:49,917 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 21:08:49,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 21:08:49,918 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 21:08:49,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 21:08:49,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 21:08:49,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 21:08:49,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 21:08:49,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 21:08:49,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 21:08:49,919 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 21:08:49,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 21:08:49,920 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 21:08:49,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 21:08:49,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 21:08:49,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 21:08:49,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 21:08:49,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:08:49,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 21:08:49,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 21:08:49,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 21:08:49,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 21:08:49,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 21:08:49,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 21:08:49,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 21:08:49,923 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 21:08:49,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 21:08:49,923 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 21:08:49,923 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 21:08:50,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 21:08:50,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 21:08:50,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 21:08:50,255 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 21:08:50,256 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 21:08:50,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-30 21:08:51,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 21:08:51,614 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 21:08:51,615 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-vector-add.wvr.c [2023-08-30 21:08:51,622 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a3b3282/d806148496894d0bb26e68242939a128/FLAG422efd955 [2023-08-30 21:08:51,640 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a3b3282/d806148496894d0bb26e68242939a128 [2023-08-30 21:08:51,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 21:08:51,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 21:08:51,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 21:08:51,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 21:08:51,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 21:08:51,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:51,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a21aa17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51, skipping insertion in model container [2023-08-30 21:08:51,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:51,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 21:08:51,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 21:08:51,878 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-vector-add.wvr.c[2598,2611] [2023-08-30 21:08:51,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:08:51,899 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 21:08:51,935 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-vector-add.wvr.c[2598,2611] [2023-08-30 21:08:51,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 21:08:51,956 INFO L208 MainTranslator]: Completed translation [2023-08-30 21:08:51,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51 WrapperNode [2023-08-30 21:08:51,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 21:08:51,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 21:08:51,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 21:08:51,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 21:08:51,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:51,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,031 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 200 [2023-08-30 21:08:52,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 21:08:52,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 21:08:52,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 21:08:52,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 21:08:52,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,081 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 21:08:52,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 21:08:52,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 21:08:52,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 21:08:52,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (1/1) ... [2023-08-30 21:08:52,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 21:08:52,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:08:52,120 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) [2023-08-30 21:08:52,141 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 [2023-08-30 21:08:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 21:08:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 21:08:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 21:08:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 21:08:52,160 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 21:08:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 21:08:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 21:08:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 21:08:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 21:08:52,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 21:08:52,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 21:08:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 21:08:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 21:08:52,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 21:08:52,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 21:08:52,163 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 21:08:52,253 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 21:08:52,255 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 21:08:52,676 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 21:08:52,693 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 21:08:52,693 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 21:08:52,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:08:52 BoogieIcfgContainer [2023-08-30 21:08:52,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 21:08:52,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 21:08:52,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 21:08:52,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 21:08:52,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:08:51" (1/3) ... [2023-08-30 21:08:52,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ed5b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:08:52, skipping insertion in model container [2023-08-30 21:08:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:08:51" (2/3) ... [2023-08-30 21:08:52,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ed5b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:08:52, skipping insertion in model container [2023-08-30 21:08:52,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:08:52" (3/3) ... [2023-08-30 21:08:52,702 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-08-30 21:08:52,708 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 21:08:52,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 21:08:52,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 21:08:52,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 21:08:52,850 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 21:08:52,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 272 transitions, 568 flow [2023-08-30 21:08:52,995 INFO L130 PetriNetUnfolder]: 25/269 cut-off events. [2023-08-30 21:08:52,996 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 21:08:53,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 269 events. 25/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-08-30 21:08:53,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 272 transitions, 568 flow [2023-08-30 21:08:53,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 536 flow [2023-08-30 21:08:53,014 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 21:08:53,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 536 flow [2023-08-30 21:08:53,029 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 536 flow [2023-08-30 21:08:53,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 536 flow [2023-08-30 21:08:53,122 INFO L130 PetriNetUnfolder]: 25/259 cut-off events. [2023-08-30 21:08:53,123 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 21:08:53,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 259 events. 25/259 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 184 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 215. Up to 2 conditions per place. [2023-08-30 21:08:53,125 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-30 21:08:59,876 INFO L134 LiptonReduction]: Checked pairs total: 4237 [2023-08-30 21:08:59,876 INFO L136 LiptonReduction]: Total number of compositions: 267 [2023-08-30 21:08:59,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 21:08:59,895 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=true, 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;@4bd6ce86, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 21:08:59,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 21:08:59,904 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2023-08-30 21:08:59,904 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 21:08:59,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:08:59,905 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] [2023-08-30 21:08:59,905 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)] === [2023-08-30 21:08:59,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:08:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1534120368, now seen corresponding path program 1 times [2023-08-30 21:08:59,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:08:59,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929879716] [2023-08-30 21:08:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:08:59,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 21:09:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929879716] [2023-08-30 21:09:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929879716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:09:00,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 21:09:00,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 21:09:00,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057771951] [2023-08-30 21:09:00,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:09:00,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 21:09:00,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 21:09:00,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 21:09:00,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 539 [2023-08-30 21:09:00,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:00,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:00,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 539 [2023-08-30 21:09:00,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:01,080 INFO L130 PetriNetUnfolder]: 1632/2322 cut-off events. [2023-08-30 21:09:01,080 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-30 21:09:01,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2322 events. 1632/2322 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10376 event pairs, 885 based on Foata normal form. 2/1550 useless extension candidates. Maximal degree in co-relation 1294. Up to 755 conditions per place. [2023-08-30 21:09:01,092 INFO L137 encePairwiseOnDemand]: 529/539 looper letters, 26 selfloop transitions, 8 changer transitions 56/96 dead transitions. [2023-08-30 21:09:01,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 426 flow [2023-08-30 21:09:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 21:09:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 21:09:01,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1237 transitions. [2023-08-30 21:09:01,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45899814471243044 [2023-08-30 21:09:01,110 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1237 transitions. [2023-08-30 21:09:01,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1237 transitions. [2023-08-30 21:09:01,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:01,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1237 transitions. [2023-08-30 21:09:01,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.4) internal successors, (1237), 5 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,131 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1237 transitions. [2023-08-30 21:09:01,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 426 flow [2023-08-30 21:09:01,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 21:09:01,139 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2023-08-30 21:09:01,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-30 21:09:01,143 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-30 21:09:01,144 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2023-08-30 21:09:01,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:01,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:01,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 21:09:01,145 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)] === [2023-08-30 21:09:01,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash -432182153, now seen corresponding path program 1 times [2023-08-30 21:09:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:01,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915203985] [2023-08-30 21:09:01,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:01,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:01,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915203985] [2023-08-30 21:09:01,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915203985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:01,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776540612] [2023-08-30 21:09:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:01,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:01,289 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) [2023-08-30 21:09:01,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 21:09:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:01,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 21:09:01,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:01,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:09:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:01,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776540612] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:01,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 21:09:01,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-30 21:09:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420073174] [2023-08-30 21:09:01,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:09:01,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 21:09:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:01,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 21:09:01,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-08-30 21:09:01,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 539 [2023-08-30 21:09:01,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:01,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 539 [2023-08-30 21:09:01,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:01,889 INFO L130 PetriNetUnfolder]: 641/936 cut-off events. [2023-08-30 21:09:01,889 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 21:09:01,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 936 events. 641/936 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3527 event pairs, 185 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1874. Up to 543 conditions per place. [2023-08-30 21:09:01,895 INFO L137 encePairwiseOnDemand]: 533/539 looper letters, 42 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2023-08-30 21:09:01,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 250 flow [2023-08-30 21:09:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 21:09:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 21:09:01,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1130 transitions. [2023-08-30 21:09:01,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41929499072356213 [2023-08-30 21:09:01,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1130 transitions. [2023-08-30 21:09:01,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1130 transitions. [2023-08-30 21:09:01,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:01,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1130 transitions. [2023-08-30 21:09:01,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 226.0) internal successors, (1130), 5 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,909 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 539.0) internal successors, (3234), 6 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,909 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 1130 transitions. [2023-08-30 21:09:01,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 250 flow [2023-08-30 21:09:01,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 232 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 21:09:01,913 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2023-08-30 21:09:01,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-08-30 21:09:01,914 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-30 21:09:01,914 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2023-08-30 21:09:01,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:01,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:01,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:01,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 21:09:02,121 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 [2023-08-30 21:09:02,122 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)] === [2023-08-30 21:09:02,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:02,123 INFO L85 PathProgramCache]: Analyzing trace with hash 962992084, now seen corresponding path program 1 times [2023-08-30 21:09:02,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:02,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205030722] [2023-08-30 21:09:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:02,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:02,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205030722] [2023-08-30 21:09:02,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205030722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:02,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836975816] [2023-08-30 21:09:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:02,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:02,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:02,329 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) [2023-08-30 21:09:02,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 21:09:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:02,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 21:09:02,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:02,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:09:02,647 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836975816] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:02,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 21:09:02,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-30 21:09:02,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38670340] [2023-08-30 21:09:02,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:09:02,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 21:09:02,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:02,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 21:09:02,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-30 21:09:02,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 539 [2023-08-30 21:09:02,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:02,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:02,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 539 [2023-08-30 21:09:02,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:03,272 INFO L130 PetriNetUnfolder]: 829/1360 cut-off events. [2023-08-30 21:09:03,273 INFO L131 PetriNetUnfolder]: For 615/759 co-relation queries the response was YES. [2023-08-30 21:09:03,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1360 events. 829/1360 cut-off events. For 615/759 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6657 event pairs, 253 based on Foata normal form. 144/1328 useless extension candidates. Maximal degree in co-relation 3027. Up to 547 conditions per place. [2023-08-30 21:09:03,282 INFO L137 encePairwiseOnDemand]: 530/539 looper letters, 88 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2023-08-30 21:09:03,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 544 flow [2023-08-30 21:09:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 21:09:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 21:09:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1994 transitions. [2023-08-30 21:09:03,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41104926819212534 [2023-08-30 21:09:03,288 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1994 transitions. [2023-08-30 21:09:03,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1994 transitions. [2023-08-30 21:09:03,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:03,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1994 transitions. [2023-08-30 21:09:03,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 221.55555555555554) internal successors, (1994), 9 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:03,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:03,301 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 539.0) internal successors, (5390), 10 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:03,302 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 9 states and 1994 transitions. [2023-08-30 21:09:03,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 107 transitions, 544 flow [2023-08-30 21:09:03,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 107 transitions, 528 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 21:09:03,307 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 213 flow [2023-08-30 21:09:03,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2023-08-30 21:09:03,309 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-30 21:09:03,309 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 213 flow [2023-08-30 21:09:03,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.0) internal successors, (1505), 7 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:03,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:03,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:03,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 21:09:03,518 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 [2023-08-30 21:09:03,519 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)] === [2023-08-30 21:09:03,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:03,519 INFO L85 PathProgramCache]: Analyzing trace with hash -316438106, now seen corresponding path program 2 times [2023-08-30 21:09:03,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:03,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844629455] [2023-08-30 21:09:03,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:03,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844629455] [2023-08-30 21:09:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844629455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631512481] [2023-08-30 21:09:03,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 21:09:03,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:03,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:03,696 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) [2023-08-30 21:09:03,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 21:09:03,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:09:03,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:09:03,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 21:09:03,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:03,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 21:09:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631512481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:09:03,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 21:09:03,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 21:09:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174843181] [2023-08-30 21:09:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:09:03,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 21:09:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 21:09:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-30 21:09:04,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-08-30 21:09:04,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:04,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:04,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-08-30 21:09:04,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:04,353 INFO L130 PetriNetUnfolder]: 1387/2192 cut-off events. [2023-08-30 21:09:04,353 INFO L131 PetriNetUnfolder]: For 2178/2418 co-relation queries the response was YES. [2023-08-30 21:09:04,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6305 conditions, 2192 events. 1387/2192 cut-off events. For 2178/2418 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11091 event pairs, 553 based on Foata normal form. 241/2421 useless extension candidates. Maximal degree in co-relation 6253. Up to 1187 conditions per place. [2023-08-30 21:09:04,368 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 91 selfloop transitions, 8 changer transitions 11/114 dead transitions. [2023-08-30 21:09:04,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 114 transitions, 681 flow [2023-08-30 21:09:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:09:04,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:09:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1496 transitions. [2023-08-30 21:09:04,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46258503401360546 [2023-08-30 21:09:04,373 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1496 transitions. [2023-08-30 21:09:04,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1496 transitions. [2023-08-30 21:09:04,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:04,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1496 transitions. [2023-08-30 21:09:04,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.33333333333334) internal successors, (1496), 6 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:04,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:04,382 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:04,382 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 213 flow. Second operand 6 states and 1496 transitions. [2023-08-30 21:09:04,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 114 transitions, 681 flow [2023-08-30 21:09:04,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 114 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 21:09:04,396 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 283 flow [2023-08-30 21:09:04,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-08-30 21:09:04,398 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2023-08-30 21:09:04,398 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 283 flow [2023-08-30 21:09:04,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:04,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:04,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:04,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 21:09:04,611 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 [2023-08-30 21:09:04,611 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)] === [2023-08-30 21:09:04,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2030662522, now seen corresponding path program 3 times [2023-08-30 21:09:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:04,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404692742] [2023-08-30 21:09:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404692742] [2023-08-30 21:09:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404692742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:04,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553557547] [2023-08-30 21:09:04,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 21:09:04,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:04,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:04,771 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) [2023-08-30 21:09:04,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 21:09:04,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 21:09:04,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:09:04,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 21:09:04,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:05,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 21:09:05,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553557547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:09:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 21:09:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 21:09:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103777759] [2023-08-30 21:09:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:09:05,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 21:09:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 21:09:05,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-08-30 21:09:05,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-08-30 21:09:05,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:05,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:05,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-08-30 21:09:05,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:05,446 INFO L130 PetriNetUnfolder]: 1615/2609 cut-off events. [2023-08-30 21:09:05,446 INFO L131 PetriNetUnfolder]: For 4408/4688 co-relation queries the response was YES. [2023-08-30 21:09:05,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8366 conditions, 2609 events. 1615/2609 cut-off events. For 4408/4688 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14344 event pairs, 589 based on Foata normal form. 281/2852 useless extension candidates. Maximal degree in co-relation 8337. Up to 1151 conditions per place. [2023-08-30 21:09:05,464 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 87 selfloop transitions, 15 changer transitions 11/117 dead transitions. [2023-08-30 21:09:05,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 757 flow [2023-08-30 21:09:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:09:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:09:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1504 transitions. [2023-08-30 21:09:05,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650587507730365 [2023-08-30 21:09:05,468 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1504 transitions. [2023-08-30 21:09:05,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1504 transitions. [2023-08-30 21:09:05,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:05,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1504 transitions. [2023-08-30 21:09:05,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:05,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:05,499 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:05,499 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 283 flow. Second operand 6 states and 1504 transitions. [2023-08-30 21:09:05,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 757 flow [2023-08-30 21:09:05,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 117 transitions, 742 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 21:09:05,518 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 398 flow [2023-08-30 21:09:05,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2023-08-30 21:09:05,519 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2023-08-30 21:09:05,519 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 398 flow [2023-08-30 21:09:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:05,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:05,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:05,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 21:09:05,727 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 [2023-08-30 21:09:05,727 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)] === [2023-08-30 21:09:05,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1967518296, now seen corresponding path program 4 times [2023-08-30 21:09:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:05,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490618210] [2023-08-30 21:09:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:05,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490618210] [2023-08-30 21:09:05,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490618210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:05,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808496711] [2023-08-30 21:09:05,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 21:09:05,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:05,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:05,925 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) [2023-08-30 21:09:05,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 21:09:06,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 21:09:06,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:09:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 21:09:06,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:06,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:09:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:06,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808496711] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:09:06,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:09:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-08-30 21:09:06,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082704446] [2023-08-30 21:09:06,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:09:06,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 21:09:06,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 21:09:06,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-30 21:09:06,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 539 [2023-08-30 21:09:06,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 219.30769230769232) internal successors, (2851), 13 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:06,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:06,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 539 [2023-08-30 21:09:06,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:07,613 INFO L130 PetriNetUnfolder]: 2205/3638 cut-off events. [2023-08-30 21:09:07,613 INFO L131 PetriNetUnfolder]: For 9088/9088 co-relation queries the response was YES. [2023-08-30 21:09:07,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12406 conditions, 3638 events. 2205/3638 cut-off events. For 9088/9088 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 21084 event pairs, 50 based on Foata normal form. 14/3648 useless extension candidates. Maximal degree in co-relation 12374. Up to 984 conditions per place. [2023-08-30 21:09:07,641 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 160 selfloop transitions, 99 changer transitions 0/262 dead transitions. [2023-08-30 21:09:07,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 262 transitions, 1958 flow [2023-08-30 21:09:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 21:09:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 21:09:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4928 transitions. [2023-08-30 21:09:07,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2023-08-30 21:09:07,653 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4928 transitions. [2023-08-30 21:09:07,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4928 transitions. [2023-08-30 21:09:07,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:07,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4928 transitions. [2023-08-30 21:09:07,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 224.0) internal successors, (4928), 22 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:07,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:07,684 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 539.0) internal successors, (12397), 23 states have internal predecessors, (12397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:07,685 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 398 flow. Second operand 22 states and 4928 transitions. [2023-08-30 21:09:07,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 262 transitions, 1958 flow [2023-08-30 21:09:07,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 262 transitions, 1912 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 21:09:07,717 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1316 flow [2023-08-30 21:09:07,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1316, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2023-08-30 21:09:07,718 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2023-08-30 21:09:07,719 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1316 flow [2023-08-30 21:09:07,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 219.30769230769232) internal successors, (2851), 13 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:07,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:07,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:07,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 21:09:07,925 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 [2023-08-30 21:09:07,925 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)] === [2023-08-30 21:09:07,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:07,926 INFO L85 PathProgramCache]: Analyzing trace with hash 902285986, now seen corresponding path program 5 times [2023-08-30 21:09:07,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:07,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551627151] [2023-08-30 21:09:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:07,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:08,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:08,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551627151] [2023-08-30 21:09:08,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551627151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:08,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960123692] [2023-08-30 21:09:08,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 21:09:08,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:08,098 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) [2023-08-30 21:09:08,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 21:09:08,221 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 21:09:08,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:09:08,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 21:09:08,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:08,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:09:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:08,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960123692] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 21:09:08,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 21:09:08,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2023-08-30 21:09:08,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719041592] [2023-08-30 21:09:08,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 21:09:08,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 21:09:08,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:08,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 21:09:08,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-30 21:09:09,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 539 [2023-08-30 21:09:09,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1316 flow. Second operand has 16 states, 16 states have (on average 218.9375) internal successors, (3503), 16 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:09,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:09,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 539 [2023-08-30 21:09:09,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:10,393 INFO L130 PetriNetUnfolder]: 3564/5780 cut-off events. [2023-08-30 21:09:10,394 INFO L131 PetriNetUnfolder]: For 31905/31905 co-relation queries the response was YES. [2023-08-30 21:09:10,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25650 conditions, 5780 events. 3564/5780 cut-off events. For 31905/31905 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35720 event pairs, 326 based on Foata normal form. 22/5800 useless extension candidates. Maximal degree in co-relation 25566. Up to 1335 conditions per place. [2023-08-30 21:09:10,461 INFO L137 encePairwiseOnDemand]: 521/539 looper letters, 248 selfloop transitions, 167 changer transitions 0/418 dead transitions. [2023-08-30 21:09:10,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 418 transitions, 4189 flow [2023-08-30 21:09:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 21:09:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 21:09:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4304 transitions. [2023-08-30 21:09:10,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42027145786544284 [2023-08-30 21:09:10,472 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4304 transitions. [2023-08-30 21:09:10,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4304 transitions. [2023-08-30 21:09:10,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:10,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4304 transitions. [2023-08-30 21:09:10,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 226.52631578947367) internal successors, (4304), 19 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:10,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:10,549 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 539.0) internal successors, (10780), 20 states have internal predecessors, (10780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:10,550 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1316 flow. Second operand 19 states and 4304 transitions. [2023-08-30 21:09:10,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 418 transitions, 4189 flow [2023-08-30 21:09:10,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 418 transitions, 4052 flow, removed 63 selfloop flow, removed 3 redundant places. [2023-08-30 21:09:10,747 INFO L231 Difference]: Finished difference. Result has 125 places, 247 transitions, 2987 flow [2023-08-30 21:09:10,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2987, PETRI_PLACES=125, PETRI_TRANSITIONS=247} [2023-08-30 21:09:10,748 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2023-08-30 21:09:10,748 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 247 transitions, 2987 flow [2023-08-30 21:09:10,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 218.9375) internal successors, (3503), 16 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:10,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:10,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:10,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 21:09:10,955 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 [2023-08-30 21:09:10,956 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)] === [2023-08-30 21:09:10,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:10,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1514077468, now seen corresponding path program 6 times [2023-08-30 21:09:10,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49196204] [2023-08-30 21:09:10,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:10,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 21:09:11,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:11,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49196204] [2023-08-30 21:09:11,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49196204] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:11,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486402169] [2023-08-30 21:09:11,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 21:09:11,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:11,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:11,125 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) [2023-08-30 21:09:11,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 21:09:11,246 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 21:09:11,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 21:09:11,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 21:09:11,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 21:09:11,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 21:09:11,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486402169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 21:09:11,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 21:09:11,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 21:09:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233422443] [2023-08-30 21:09:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 21:09:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 21:09:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 21:09:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 21:09:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-08-30 21:09:11,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 539 [2023-08-30 21:09:11,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 247 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:11,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 21:09:11,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 539 [2023-08-30 21:09:11,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 21:09:12,299 INFO L130 PetriNetUnfolder]: 3494/5578 cut-off events. [2023-08-30 21:09:12,299 INFO L131 PetriNetUnfolder]: For 52534/52636 co-relation queries the response was YES. [2023-08-30 21:09:12,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29719 conditions, 5578 events. 3494/5578 cut-off events. For 52534/52636 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 33724 event pairs, 878 based on Foata normal form. 98/5665 useless extension candidates. Maximal degree in co-relation 29617. Up to 2634 conditions per place. [2023-08-30 21:09:12,428 INFO L137 encePairwiseOnDemand]: 532/539 looper letters, 196 selfloop transitions, 67 changer transitions 13/307 dead transitions. [2023-08-30 21:09:12,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 307 transitions, 3981 flow [2023-08-30 21:09:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 21:09:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 21:09:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1498 transitions. [2023-08-30 21:09:12,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2023-08-30 21:09:12,433 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1498 transitions. [2023-08-30 21:09:12,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1498 transitions. [2023-08-30 21:09:12,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 21:09:12,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1498 transitions. [2023-08-30 21:09:12,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 249.66666666666666) internal successors, (1498), 6 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:12,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:12,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:12,441 INFO L175 Difference]: Start difference. First operand has 125 places, 247 transitions, 2987 flow. Second operand 6 states and 1498 transitions. [2023-08-30 21:09:12,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 307 transitions, 3981 flow [2023-08-30 21:09:12,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 307 transitions, 3791 flow, removed 62 selfloop flow, removed 4 redundant places. [2023-08-30 21:09:12,680 INFO L231 Difference]: Finished difference. Result has 129 places, 251 transitions, 3091 flow [2023-08-30 21:09:12,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3091, PETRI_PLACES=129, PETRI_TRANSITIONS=251} [2023-08-30 21:09:12,681 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2023-08-30 21:09:12,681 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 251 transitions, 3091 flow [2023-08-30 21:09:12,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 240.66666666666666) internal successors, (1444), 6 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 21:09:12,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 21:09:12,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 21:09:12,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 21:09:12,884 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 [2023-08-30 21:09:12,885 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)] === [2023-08-30 21:09:12,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 21:09:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 205007497, now seen corresponding path program 1 times [2023-08-30 21:09:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 21:09:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426876018] [2023-08-30 21:09:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 21:09:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 21:09:16,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 21:09:16,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426876018] [2023-08-30 21:09:16,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426876018] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 21:09:16,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273031638] [2023-08-30 21:09:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 21:09:16,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 21:09:16,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 21:09:16,593 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) [2023-08-30 21:09:16,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 21:09:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 21:09:16,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-30 21:09:16,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 21:09:16,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:16,822 INFO L321 Elim1Store]: treesize reduction 49, result has 33.8 percent of original size [2023-08-30 21:09:16,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 35 [2023-08-30 21:09:16,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:16,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:16,965 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 21:09:16,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2023-08-30 21:09:17,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:17,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:17,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:17,124 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-08-30 21:09:17,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2023-08-30 21:09:17,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:17,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:17,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:17,335 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2023-08-30 21:09:17,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2023-08-30 21:09:18,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-08-30 21:09:18,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:18,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:18,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:18,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-08-30 21:09:18,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:18,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:18,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 21:09:18,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 32 [2023-08-30 21:09:19,129 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 21:09:19,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2023-08-30 21:09:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 21:09:19,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 21:09:39,917 INFO L321 Elim1Store]: treesize reduction 42, result has 62.5 percent of original size [2023-08-30 21:09:39,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 330 treesize of output 190 [2023-08-30 21:09:40,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:09:40,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 233057 treesize of output 224681 [2023-08-30 21:09:43,730 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:09:43,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36342 treesize of output 31718 [2023-08-30 21:09:48,101 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:09:48,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41654 treesize of output 31942 [2023-08-30 21:09:53,190 WARN L222 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 1044 DAG size of output: 1035 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 21:10:01,184 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 21:10:01,185 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 10427 treesize of output 9751 [2023-08-30 21:11:43,912 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:14:34,854 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:17:48,655 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-30 21:20:58,560 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Killed by 15