./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.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/bench-exp3x3-opt.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 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 --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 18:38:28,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:38:28,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:38:28,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:38:28,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:38:28,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:38:28,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:38:28,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:38:28,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:38:28,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:38:28,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:38:28,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:38:28,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:38:28,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:38:28,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:38:28,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:38:28,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:38:28,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:38:28,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:38:28,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:38:28,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:38:28,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:38:28,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:38:28,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:38:28,898 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:38:28,898 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:38:28,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:38:28,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:38:28,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:38:28,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:38:28,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:38:28,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:38:28,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:38:28,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:38:28,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:38:28,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:38:28,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:38:28,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:38:28,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:38:28,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:38:28,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:38:28,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:38:28,946 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:38:28,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:38:28,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:38:28,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:38:28,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:38:28,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:38:28,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:38:28,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:38:28,950 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:38:28,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:38:28,951 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:38:28,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:38:28,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:38:28,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:38:28,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:38:28,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:38:28,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:38:28,952 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:38:28,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:38:28,952 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:38:28,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:38:28,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:38:28,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:38:28,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:38:28,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:38:28,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:38:28,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:38:28,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:38:28,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:38:28,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:38:28,955 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:38:28,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:38:28,955 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:38:28,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:38:28,955 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:38:28,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c1c24b29e2a448aa58292c6eb9ff7da7a6479c4a0ee37fcfe55a998096eea30 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:38:29,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:38:29,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:38:29,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:38:29,281 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:38:29,281 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:38:29,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-08-30 18:38:30,474 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:38:30,665 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:38:30,666 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3-opt.wvr.c [2023-08-30 18:38:30,671 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b567cd22/414fdff8def341ffb15693d0a3c2de47/FLAG83e3b913d [2023-08-30 18:38:30,682 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b567cd22/414fdff8def341ffb15693d0a3c2de47 [2023-08-30 18:38:30,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:38:30,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:38:30,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:38:30,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:38:30,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:38:30,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:30,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3939766f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30, skipping insertion in model container [2023-08-30 18:38:30,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:30,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:38:30,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:38:30,870 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/bench-exp3x3-opt.wvr.c[2826,2839] [2023-08-30 18:38:30,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:38:30,882 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:38:30,902 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/bench-exp3x3-opt.wvr.c[2826,2839] [2023-08-30 18:38:30,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:38:30,918 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:38:30,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30 WrapperNode [2023-08-30 18:38:30,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:38:30,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:38:30,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:38:30,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:38:30,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:30,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:30,987 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-08-30 18:38:30,988 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:38:30,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:38:30,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:38:30,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:38:30,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:30,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:30,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:30,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:31,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:31,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:31,006 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:31,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:31,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:38:31,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:38:31,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:38:31,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:38:31,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (1/1) ... [2023-08-30 18:38:31,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:38:31,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:38:31,042 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 18:38:31,047 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 18:38:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:38:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:38:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:38:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 18:38:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 18:38:31,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 18:38:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 18:38:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 18:38:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 18:38:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 18:38:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 18:38:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 18:38:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:38:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 18:38:31,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 18:38:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-30 18:38:31,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-30 18:38:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:38:31,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:38:31,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:38:31,083 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 18:38:31,169 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:38:31,170 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:38:31,397 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:38:31,404 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:38:31,404 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-30 18:38:31,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:38:31 BoogieIcfgContainer [2023-08-30 18:38:31,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:38:31,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:38:31,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:38:31,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:38:31,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:38:30" (1/3) ... [2023-08-30 18:38:31,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8771f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:38:31, skipping insertion in model container [2023-08-30 18:38:31,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:38:30" (2/3) ... [2023-08-30 18:38:31,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8771f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:38:31, skipping insertion in model container [2023-08-30 18:38:31,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:38:31" (3/3) ... [2023-08-30 18:38:31,422 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2023-08-30 18:38:31,428 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:38:31,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:38:31,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:38:31,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:38:31,605 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-30 18:38:31,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2023-08-30 18:38:31,767 INFO L130 PetriNetUnfolder]: 14/163 cut-off events. [2023-08-30 18:38:31,767 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 18:38:31,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-30 18:38:31,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2023-08-30 18:38:31,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 147 transitions, 330 flow [2023-08-30 18:38:31,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:38:31,803 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 147 transitions, 330 flow [2023-08-30 18:38:31,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 147 transitions, 330 flow [2023-08-30 18:38:31,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 147 transitions, 330 flow [2023-08-30 18:38:31,861 INFO L130 PetriNetUnfolder]: 14/147 cut-off events. [2023-08-30 18:38:31,862 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 18:38:31,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 147 events. 14/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-30 18:38:31,867 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-08-30 18:38:37,306 INFO L134 LiptonReduction]: Checked pairs total: 3543 [2023-08-30 18:38:37,307 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-30 18:38:37,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:38:37,321 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;@6ee225cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:38:37,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 18:38:37,328 INFO L130 PetriNetUnfolder]: 6/36 cut-off events. [2023-08-30 18:38:37,328 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 18:38:37,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:37,329 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] [2023-08-30 18:38:37,329 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 4 more)] === [2023-08-30 18:38:37,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:37,333 INFO L85 PathProgramCache]: Analyzing trace with hash 859190718, now seen corresponding path program 1 times [2023-08-30 18:38:37,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137364657] [2023-08-30 18:38:37,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:37,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:38,139 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 18:38:38,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:38,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137364657] [2023-08-30 18:38:38,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137364657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:38,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:38:38,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 18:38:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302165901] [2023-08-30 18:38:38,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:38,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:38:38,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:38,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:38:38,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:38:38,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 293 [2023-08-30 18:38:38,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 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 18:38:38,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:38,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 293 [2023-08-30 18:38:38,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:38,625 INFO L130 PetriNetUnfolder]: 3277/3973 cut-off events. [2023-08-30 18:38:38,626 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2023-08-30 18:38:38,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 3973 events. 3277/3973 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10583 event pairs, 837 based on Foata normal form. 1/2272 useless extension candidates. Maximal degree in co-relation 5564. Up to 2141 conditions per place. [2023-08-30 18:38:38,649 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 59 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-08-30 18:38:38,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 309 flow [2023-08-30 18:38:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:38:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:38:38,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-08-30 18:38:38,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574516496018203 [2023-08-30 18:38:38,671 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-08-30 18:38:38,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-08-30 18:38:38,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:38,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-08-30 18:38:38,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 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 18:38:38,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:38,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:38,689 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 110 flow. Second operand 3 states and 490 transitions. [2023-08-30 18:38:38,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 309 flow [2023-08-30 18:38:38,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 271 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 18:38:38,698 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 105 flow [2023-08-30 18:38:38,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2023-08-30 18:38:38,703 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-08-30 18:38:38,704 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 105 flow [2023-08-30 18:38:38,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 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 18:38:38,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:38,707 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] [2023-08-30 18:38:38,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:38:38,708 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 4 more)] === [2023-08-30 18:38:38,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:38,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1079964367, now seen corresponding path program 1 times [2023-08-30 18:38:38,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:38,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415590813] [2023-08-30 18:38:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:38,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:38:39,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415590813] [2023-08-30 18:38:39,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415590813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:39,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:38:39,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:38:39,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8597064] [2023-08-30 18:38:39,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:39,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:38:39,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:38:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:38:39,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:38:39,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 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 18:38:39,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:39,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:38:39,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:39,739 INFO L130 PetriNetUnfolder]: 4887/5960 cut-off events. [2023-08-30 18:38:39,739 INFO L131 PetriNetUnfolder]: For 789/789 co-relation queries the response was YES. [2023-08-30 18:38:39,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13241 conditions, 5960 events. 4887/5960 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17742 event pairs, 529 based on Foata normal form. 126/4330 useless extension candidates. Maximal degree in co-relation 7451. Up to 4746 conditions per place. [2023-08-30 18:38:39,762 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 74 selfloop transitions, 13 changer transitions 7/94 dead transitions. [2023-08-30 18:38:39,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 94 transitions, 425 flow [2023-08-30 18:38:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:38:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:38:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-08-30 18:38:39,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034129692832765 [2023-08-30 18:38:39,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-08-30 18:38:39,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-08-30 18:38:39,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:39,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-08-30 18:38:39,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 18:38:39,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:39,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:39,771 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 105 flow. Second operand 4 states and 590 transitions. [2023-08-30 18:38:39,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 94 transitions, 425 flow [2023-08-30 18:38:39,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 94 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:38:39,777 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 191 flow [2023-08-30 18:38:39,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2023-08-30 18:38:39,778 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-30 18:38:39,778 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 191 flow [2023-08-30 18:38:39,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 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 18:38:39,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:39,779 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] [2023-08-30 18:38:39,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 18:38:39,779 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 4 more)] === [2023-08-30 18:38:39,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash 978865401, now seen corresponding path program 1 times [2023-08-30 18:38:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:39,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535538791] [2023-08-30 18:38:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:38:40,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535538791] [2023-08-30 18:38:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535538791] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:38:40,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859496992] [2023-08-30 18:38:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:40,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:38:40,093 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 18:38:40,121 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 18:38:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:40,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 18:38:40,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:38:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:38:40,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:38:40,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859496992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:40,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:38:40,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 18:38:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792681364] [2023-08-30 18:38:40,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:40,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:38:40,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:38:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:38:40,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 293 [2023-08-30 18:38:40,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 18:38:40,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:40,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 293 [2023-08-30 18:38:40,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:41,192 INFO L130 PetriNetUnfolder]: 6427/7817 cut-off events. [2023-08-30 18:38:41,192 INFO L131 PetriNetUnfolder]: For 5153/5153 co-relation queries the response was YES. [2023-08-30 18:38:41,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21888 conditions, 7817 events. 6427/7817 cut-off events. For 5153/5153 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23405 event pairs, 2167 based on Foata normal form. 1/7818 useless extension candidates. Maximal degree in co-relation 12123. Up to 5110 conditions per place. [2023-08-30 18:38:41,226 INFO L137 encePairwiseOnDemand]: 287/293 looper letters, 67 selfloop transitions, 13 changer transitions 5/85 dead transitions. [2023-08-30 18:38:41,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 456 flow [2023-08-30 18:38:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:38:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:38:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-30 18:38:41,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460750853242321 [2023-08-30 18:38:41,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-30 18:38:41,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-30 18:38:41,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:41,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-30 18:38:41,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 18:38:41,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:41,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:41,233 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 191 flow. Second operand 3 states and 480 transitions. [2023-08-30 18:38:41,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 456 flow [2023-08-30 18:38:41,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 456 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 18:38:41,237 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 256 flow [2023-08-30 18:38:41,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-08-30 18:38:41,238 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2023-08-30 18:38:41,238 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 256 flow [2023-08-30 18:38:41,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 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 18:38:41,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:41,239 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 18:38:41,256 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 18:38:41,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:41,446 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 4 more)] === [2023-08-30 18:38:41,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1588966705, now seen corresponding path program 1 times [2023-08-30 18:38:41,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:41,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757213908] [2023-08-30 18:38:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:38:41,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:41,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757213908] [2023-08-30 18:38:41,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757213908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:41,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:38:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:38:41,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317201798] [2023-08-30 18:38:41,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:41,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:38:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:38:41,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:38:41,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:38:41,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 18:38:41,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:41,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:38:41,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:42,444 INFO L130 PetriNetUnfolder]: 6271/7661 cut-off events. [2023-08-30 18:38:42,444 INFO L131 PetriNetUnfolder]: For 9563/9563 co-relation queries the response was YES. [2023-08-30 18:38:42,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24370 conditions, 7661 events. 6271/7661 cut-off events. For 9563/9563 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23885 event pairs, 1083 based on Foata normal form. 156/7817 useless extension candidates. Maximal degree in co-relation 13894. Up to 6447 conditions per place. [2023-08-30 18:38:42,479 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 80 selfloop transitions, 19 changer transitions 9/108 dead transitions. [2023-08-30 18:38:42,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 108 transitions, 644 flow [2023-08-30 18:38:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:38:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:38:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-08-30 18:38:42,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034129692832765 [2023-08-30 18:38:42,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-08-30 18:38:42,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-08-30 18:38:42,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:42,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-08-30 18:38:42,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 18:38:42,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:42,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:42,487 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 256 flow. Second operand 4 states and 590 transitions. [2023-08-30 18:38:42,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 108 transitions, 644 flow [2023-08-30 18:38:42,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 108 transitions, 619 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 18:38:42,501 INFO L231 Difference]: Finished difference. Result has 51 places, 63 transitions, 336 flow [2023-08-30 18:38:42,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=51, PETRI_TRANSITIONS=63} [2023-08-30 18:38:42,502 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-30 18:38:42,502 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 63 transitions, 336 flow [2023-08-30 18:38:42,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 18:38:42,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:42,503 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 18:38:42,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 18:38:42,503 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 4 more)] === [2023-08-30 18:38:42,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1722538193, now seen corresponding path program 2 times [2023-08-30 18:38:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:42,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992526965] [2023-08-30 18:38:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:42,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:38:42,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992526965] [2023-08-30 18:38:42,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992526965] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:38:42,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834932345] [2023-08-30 18:38:42,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:38:42,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:42,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:38:42,725 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 18:38:42,749 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 18:38:42,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 18:38:42,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:38:42,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 18:38:42,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:38:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:42,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:38:42,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834932345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:42,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:38:42,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 18:38:42,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386567170] [2023-08-30 18:38:42,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:42,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:38:42,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:38:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:38:42,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 293 [2023-08-30 18:38:42,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 63 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 18:38:42,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:42,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 293 [2023-08-30 18:38:42,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:43,631 INFO L130 PetriNetUnfolder]: 9527/11599 cut-off events. [2023-08-30 18:38:43,632 INFO L131 PetriNetUnfolder]: For 12551/12551 co-relation queries the response was YES. [2023-08-30 18:38:43,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35496 conditions, 11599 events. 9527/11599 cut-off events. For 12551/12551 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37435 event pairs, 3399 based on Foata normal form. 1/11600 useless extension candidates. Maximal degree in co-relation 21625. Up to 6396 conditions per place. [2023-08-30 18:38:43,684 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 77 selfloop transitions, 13 changer transitions 5/95 dead transitions. [2023-08-30 18:38:43,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 631 flow [2023-08-30 18:38:43,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:38:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:38:43,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-30 18:38:43,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620022753128555 [2023-08-30 18:38:43,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-30 18:38:43,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-30 18:38:43,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:43,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-30 18:38:43,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 18:38:43,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:43,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:43,691 INFO L175 Difference]: Start difference. First operand has 51 places, 63 transitions, 336 flow. Second operand 3 states and 494 transitions. [2023-08-30 18:38:43,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 631 flow [2023-08-30 18:38:43,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:38:43,712 INFO L231 Difference]: Finished difference. Result has 53 places, 65 transitions, 372 flow [2023-08-30 18:38:43,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=53, PETRI_TRANSITIONS=65} [2023-08-30 18:38:43,713 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2023-08-30 18:38:43,713 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 65 transitions, 372 flow [2023-08-30 18:38:43,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 18:38:43,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:43,714 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 18:38:43,723 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 18:38:43,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:43,920 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 4 more)] === [2023-08-30 18:38:43,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:43,920 INFO L85 PathProgramCache]: Analyzing trace with hash 810242775, now seen corresponding path program 1 times [2023-08-30 18:38:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:43,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815056470] [2023-08-30 18:38:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:43,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:38:44,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:44,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815056470] [2023-08-30 18:38:44,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815056470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:44,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:38:44,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:38:44,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078189137] [2023-08-30 18:38:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:44,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:38:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:44,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:38:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:38:44,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:38:44,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 65 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 18:38:44,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:44,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:38:44,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:45,086 INFO L130 PetriNetUnfolder]: 9359/11431 cut-off events. [2023-08-30 18:38:45,087 INFO L131 PetriNetUnfolder]: For 17363/17363 co-relation queries the response was YES. [2023-08-30 18:38:45,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36837 conditions, 11431 events. 9359/11431 cut-off events. For 17363/17363 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38572 event pairs, 1953 based on Foata normal form. 168/11599 useless extension candidates. Maximal degree in co-relation 24955. Up to 10217 conditions per place. [2023-08-30 18:38:45,146 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 84 selfloop transitions, 27 changer transitions 11/122 dead transitions. [2023-08-30 18:38:45,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 122 transitions, 830 flow [2023-08-30 18:38:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:38:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:38:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 590 transitions. [2023-08-30 18:38:45,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034129692832765 [2023-08-30 18:38:45,149 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 590 transitions. [2023-08-30 18:38:45,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 590 transitions. [2023-08-30 18:38:45,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:45,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 590 transitions. [2023-08-30 18:38:45,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.5) internal successors, (590), 4 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 18:38:45,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:45,155 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:45,156 INFO L175 Difference]: Start difference. First operand has 53 places, 65 transitions, 372 flow. Second operand 4 states and 590 transitions. [2023-08-30 18:38:45,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 122 transitions, 830 flow [2023-08-30 18:38:45,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 122 transitions, 817 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:38:45,185 INFO L231 Difference]: Finished difference. Result has 56 places, 75 transitions, 510 flow [2023-08-30 18:38:45,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=510, PETRI_PLACES=56, PETRI_TRANSITIONS=75} [2023-08-30 18:38:45,187 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2023-08-30 18:38:45,188 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 75 transitions, 510 flow [2023-08-30 18:38:45,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 18:38:45,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:45,188 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 18:38:45,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 18:38:45,189 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 4 more)] === [2023-08-30 18:38:45,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:45,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1503143731, now seen corresponding path program 2 times [2023-08-30 18:38:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896434428] [2023-08-30 18:38:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:38:45,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:45,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896434428] [2023-08-30 18:38:45,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896434428] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:38:45,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324057978] [2023-08-30 18:38:45,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:38:45,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:45,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:38:45,449 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 18:38:45,472 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 18:38:45,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 18:38:45,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:38:45,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 18:38:45,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:38:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:45,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:38:45,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324057978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:45,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:38:45,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-30 18:38:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473691744] [2023-08-30 18:38:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:45,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:38:45,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:38:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:38:45,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 293 [2023-08-30 18:38:45,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 75 transitions, 510 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 18:38:45,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:45,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 293 [2023-08-30 18:38:45,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:46,654 INFO L130 PetriNetUnfolder]: 12615/15369 cut-off events. [2023-08-30 18:38:46,654 INFO L131 PetriNetUnfolder]: For 25373/25373 co-relation queries the response was YES. [2023-08-30 18:38:46,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51043 conditions, 15369 events. 12615/15369 cut-off events. For 25373/25373 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51496 event pairs, 5545 based on Foata normal form. 1/15370 useless extension candidates. Maximal degree in co-relation 28427. Up to 8756 conditions per place. [2023-08-30 18:38:46,743 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 89 selfloop transitions, 13 changer transitions 9/111 dead transitions. [2023-08-30 18:38:46,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 855 flow [2023-08-30 18:38:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:38:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:38:46,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-30 18:38:46,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665529010238908 [2023-08-30 18:38:46,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-30 18:38:46,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-30 18:38:46,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:46,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-30 18:38:46,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 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 18:38:46,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:46,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 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 18:38:46,750 INFO L175 Difference]: Start difference. First operand has 56 places, 75 transitions, 510 flow. Second operand 3 states and 498 transitions. [2023-08-30 18:38:46,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 855 flow [2023-08-30 18:38:46,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 830 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:38:46,772 INFO L231 Difference]: Finished difference. Result has 58 places, 77 transitions, 538 flow [2023-08-30 18:38:46,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=58, PETRI_TRANSITIONS=77} [2023-08-30 18:38:46,773 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-08-30 18:38:46,773 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 77 transitions, 538 flow [2023-08-30 18:38:46,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 18:38:46,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:46,774 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, 1] [2023-08-30 18:38:46,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 18:38:46,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:46,980 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 4 more)] === [2023-08-30 18:38:46,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1650756802, now seen corresponding path program 1 times [2023-08-30 18:38:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674911563] [2023-08-30 18:38:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:47,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:47,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674911563] [2023-08-30 18:38:47,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674911563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:38:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312249559] [2023-08-30 18:38:47,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:47,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:47,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:38:47,185 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 18:38:47,209 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 18:38:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:47,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:38:47,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:38:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:47,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:38:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:47,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312249559] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:38:47,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:38:47,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 18:38:47,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782518541] [2023-08-30 18:38:47,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:38:47,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:38:47,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:47,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:38:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:38:47,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:38:47,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 77 transitions, 538 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 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 18:38:47,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:47,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:38:47,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:48,869 INFO L130 PetriNetUnfolder]: 17771/21680 cut-off events. [2023-08-30 18:38:48,869 INFO L131 PetriNetUnfolder]: For 38903/38903 co-relation queries the response was YES. [2023-08-30 18:38:48,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74244 conditions, 21680 events. 17771/21680 cut-off events. For 38903/38903 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 79240 event pairs, 3731 based on Foata normal form. 565/22245 useless extension candidates. Maximal degree in co-relation 48926. Up to 8936 conditions per place. [2023-08-30 18:38:48,958 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 127 selfloop transitions, 32 changer transitions 35/194 dead transitions. [2023-08-30 18:38:48,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 194 transitions, 1337 flow [2023-08-30 18:38:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:38:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:38:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 899 transitions. [2023-08-30 18:38:48,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113765642775882 [2023-08-30 18:38:48,962 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 899 transitions. [2023-08-30 18:38:48,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 899 transitions. [2023-08-30 18:38:48,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:48,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 899 transitions. [2023-08-30 18:38:48,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:48,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:38:48,967 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:38:48,967 INFO L175 Difference]: Start difference. First operand has 58 places, 77 transitions, 538 flow. Second operand 6 states and 899 transitions. [2023-08-30 18:38:48,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 194 transitions, 1337 flow [2023-08-30 18:38:49,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 194 transitions, 1324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:38:49,012 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 620 flow [2023-08-30 18:38:49,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-08-30 18:38:49,015 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2023-08-30 18:38:49,015 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 620 flow [2023-08-30 18:38:49,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 0 states have call successors, (0), 0 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 18:38:49,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:49,016 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, 1] [2023-08-30 18:38:49,022 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 18:38:49,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:49,222 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 4 more)] === [2023-08-30 18:38:49,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash 201729358, now seen corresponding path program 1 times [2023-08-30 18:38:49,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:49,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812262856] [2023-08-30 18:38:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:49,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:49,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812262856] [2023-08-30 18:38:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812262856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:38:49,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405308011] [2023-08-30 18:38:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:49,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:49,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:38:49,431 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 18:38:49,452 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 18:38:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:49,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:38:49,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:38:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:49,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:38:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405308011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:38:49,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:38:49,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 18:38:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445621335] [2023-08-30 18:38:49,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:38:49,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:38:49,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:49,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:38:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:38:49,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:38:49,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 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 18:38:49,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:49,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:38:49,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:51,474 INFO L130 PetriNetUnfolder]: 23171/28330 cut-off events. [2023-08-30 18:38:51,474 INFO L131 PetriNetUnfolder]: For 67761/67761 co-relation queries the response was YES. [2023-08-30 18:38:51,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102761 conditions, 28330 events. 23171/28330 cut-off events. For 67761/67761 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 109009 event pairs, 3613 based on Foata normal form. 757/29087 useless extension candidates. Maximal degree in co-relation 54810. Up to 10010 conditions per place. [2023-08-30 18:38:51,825 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 154 selfloop transitions, 30 changer transitions 18/202 dead transitions. [2023-08-30 18:38:51,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 202 transitions, 1602 flow [2023-08-30 18:38:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:38:51,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:38:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 887 transitions. [2023-08-30 18:38:51,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045506257110353 [2023-08-30 18:38:51,831 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 887 transitions. [2023-08-30 18:38:51,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 887 transitions. [2023-08-30 18:38:51,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:51,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 887 transitions. [2023-08-30 18:38:51,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 147.83333333333334) internal successors, (887), 6 states have internal predecessors, (887), 0 states have call successors, (0), 0 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 18:38:51,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:38:51,843 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:38:51,843 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 620 flow. Second operand 6 states and 887 transitions. [2023-08-30 18:38:51,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 202 transitions, 1602 flow [2023-08-30 18:38:51,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 202 transitions, 1538 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-30 18:38:51,917 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 663 flow [2023-08-30 18:38:51,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2023-08-30 18:38:51,918 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 19 predicate places. [2023-08-30 18:38:51,918 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 663 flow [2023-08-30 18:38:51,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.66666666666666) internal successors, (814), 6 states have internal predecessors, (814), 0 states have call successors, (0), 0 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 18:38:51,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:51,918 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, 1] [2023-08-30 18:38:51,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 18:38:52,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:52,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:38:52,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:52,120 INFO L85 PathProgramCache]: Analyzing trace with hash -735069493, now seen corresponding path program 1 times [2023-08-30 18:38:52,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:52,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277594310] [2023-08-30 18:38:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:52,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277594310] [2023-08-30 18:38:52,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277594310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:38:52,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276231488] [2023-08-30 18:38:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:52,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:52,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:38:52,451 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 18:38:52,453 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 18:38:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:52,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:38:52,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:38:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:52,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:38:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:52,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276231488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:38:52,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:38:52,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-30 18:38:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075629763] [2023-08-30 18:38:52,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:38:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:38:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:38:52,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:38:52,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:38:52,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 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 18:38:52,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:52,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:38:52,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:55,273 INFO L130 PetriNetUnfolder]: 32931/40393 cut-off events. [2023-08-30 18:38:55,274 INFO L131 PetriNetUnfolder]: For 112155/112155 co-relation queries the response was YES. [2023-08-30 18:38:55,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159006 conditions, 40393 events. 32931/40393 cut-off events. For 112155/112155 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 167655 event pairs, 4945 based on Foata normal form. 1321/41714 useless extension candidates. Maximal degree in co-relation 98913. Up to 17631 conditions per place. [2023-08-30 18:38:55,403 INFO L137 encePairwiseOnDemand]: 283/293 looper letters, 153 selfloop transitions, 32 changer transitions 25/210 dead transitions. [2023-08-30 18:38:55,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 210 transitions, 1685 flow [2023-08-30 18:38:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:38:55,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:38:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 895 transitions. [2023-08-30 18:38:55,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091012514220705 [2023-08-30 18:38:55,407 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 895 transitions. [2023-08-30 18:38:55,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 895 transitions. [2023-08-30 18:38:55,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:55,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 895 transitions. [2023-08-30 18:38:55,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 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 18:38:55,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:38:55,413 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:38:55,413 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 663 flow. Second operand 6 states and 895 transitions. [2023-08-30 18:38:55,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 210 transitions, 1685 flow [2023-08-30 18:38:55,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 210 transitions, 1602 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-30 18:38:55,587 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 705 flow [2023-08-30 18:38:55,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=705, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2023-08-30 18:38:55,588 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-08-30 18:38:55,588 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 705 flow [2023-08-30 18:38:55,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 0 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 18:38:55,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:55,589 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, 1] [2023-08-30 18:38:55,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 18:38:55,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:38:55,794 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:38:55,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:55,795 INFO L85 PathProgramCache]: Analyzing trace with hash -737156810, now seen corresponding path program 1 times [2023-08-30 18:38:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:55,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193832072] [2023-08-30 18:38:55,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:55,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:38:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:38:56,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:38:56,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193832072] [2023-08-30 18:38:56,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193832072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:38:56,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:38:56,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:38:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168782756] [2023-08-30 18:38:56,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:38:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:38:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:38:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:38:56,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:38:56,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 293 [2023-08-30 18:38:56,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 705 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 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 18:38:56,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:38:56,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 293 [2023-08-30 18:38:56,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:38:59,231 INFO L130 PetriNetUnfolder]: 37866/46390 cut-off events. [2023-08-30 18:38:59,232 INFO L131 PetriNetUnfolder]: For 150964/150964 co-relation queries the response was YES. [2023-08-30 18:38:59,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194579 conditions, 46390 events. 37866/46390 cut-off events. For 150964/150964 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 191228 event pairs, 12186 based on Foata normal form. 1116/47506 useless extension candidates. Maximal degree in co-relation 98049. Up to 40691 conditions per place. [2023-08-30 18:38:59,395 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 104 selfloop transitions, 26 changer transitions 12/142 dead transitions. [2023-08-30 18:38:59,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 142 transitions, 1284 flow [2023-08-30 18:38:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:38:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:38:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-08-30 18:38:59,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051194539249146 [2023-08-30 18:38:59,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-08-30 18:38:59,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-08-30 18:38:59,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:38:59,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-08-30 18:38:59,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 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 18:38:59,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:59,402 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:38:59,403 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 705 flow. Second operand 4 states and 592 transitions. [2023-08-30 18:38:59,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 142 transitions, 1284 flow [2023-08-30 18:38:59,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 142 transitions, 1234 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 18:38:59,865 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 728 flow [2023-08-30 18:38:59,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=728, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2023-08-30 18:38:59,866 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 25 predicate places. [2023-08-30 18:38:59,866 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 728 flow [2023-08-30 18:38:59,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 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 18:38:59,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:38:59,866 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, 1] [2023-08-30 18:38:59,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 18:38:59,867 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:38:59,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:38:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1437927406, now seen corresponding path program 2 times [2023-08-30 18:38:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:38:59,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885754626] [2023-08-30 18:38:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:38:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:38:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:00,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885754626] [2023-08-30 18:39:00,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885754626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:39:00,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:39:00,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:39:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320658060] [2023-08-30 18:39:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:39:00,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:39:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:39:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:39:00,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 293 [2023-08-30 18:39:00,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 728 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 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 18:39:00,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:00,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 293 [2023-08-30 18:39:00,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:03,550 INFO L130 PetriNetUnfolder]: 43850/53622 cut-off events. [2023-08-30 18:39:03,551 INFO L131 PetriNetUnfolder]: For 171325/171325 co-relation queries the response was YES. [2023-08-30 18:39:03,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230250 conditions, 53622 events. 43850/53622 cut-off events. For 171325/171325 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 224489 event pairs, 14317 based on Foata normal form. 1248/54870 useless extension candidates. Maximal degree in co-relation 127790. Up to 47075 conditions per place. [2023-08-30 18:39:03,742 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 101 selfloop transitions, 26 changer transitions 12/139 dead transitions. [2023-08-30 18:39:03,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 139 transitions, 1255 flow [2023-08-30 18:39:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:39:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:39:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-08-30 18:39:03,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051194539249146 [2023-08-30 18:39:03,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-08-30 18:39:03,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-08-30 18:39:03,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:03,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-08-30 18:39:03,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 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 18:39:03,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:03,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:03,748 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 728 flow. Second operand 4 states and 592 transitions. [2023-08-30 18:39:03,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 139 transitions, 1255 flow [2023-08-30 18:39:04,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 1206 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:04,277 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 746 flow [2023-08-30 18:39:04,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=746, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-08-30 18:39:04,278 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 27 predicate places. [2023-08-30 18:39:04,278 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 746 flow [2023-08-30 18:39:04,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 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 18:39:04,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:04,278 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, 1] [2023-08-30 18:39:04,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 18:39:04,279 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:04,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1844332026, now seen corresponding path program 3 times [2023-08-30 18:39:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198040749] [2023-08-30 18:39:04,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:04,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:04,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198040749] [2023-08-30 18:39:04,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198040749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:39:04,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:39:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 18:39:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687752855] [2023-08-30 18:39:04,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:39:04,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:39:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:04,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:39:04,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 18:39:04,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 293 [2023-08-30 18:39:04,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 746 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 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 18:39:04,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:04,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 293 [2023-08-30 18:39:04,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:08,248 INFO L130 PetriNetUnfolder]: 47994/58602 cut-off events. [2023-08-30 18:39:08,248 INFO L131 PetriNetUnfolder]: For 202582/202582 co-relation queries the response was YES. [2023-08-30 18:39:08,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257703 conditions, 58602 events. 47994/58602 cut-off events. For 202582/202582 co-relation queries the response was YES. Maximal size of possible extension queue 1503. Compared 246886 event pairs, 15767 based on Foata normal form. 836/59438 useless extension candidates. Maximal degree in co-relation 157494. Up to 53907 conditions per place. [2023-08-30 18:39:08,497 INFO L137 encePairwiseOnDemand]: 285/293 looper letters, 102 selfloop transitions, 26 changer transitions 12/140 dead transitions. [2023-08-30 18:39:08,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 140 transitions, 1279 flow [2023-08-30 18:39:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:39:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:39:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-08-30 18:39:08,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051194539249146 [2023-08-30 18:39:08,499 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-08-30 18:39:08,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-08-30 18:39:08,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:08,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-08-30 18:39:08,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 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 18:39:08,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:08,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:08,503 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 746 flow. Second operand 4 states and 592 transitions. [2023-08-30 18:39:08,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 140 transitions, 1279 flow [2023-08-30 18:39:09,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 140 transitions, 1230 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:09,283 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 764 flow [2023-08-30 18:39:09,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=764, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2023-08-30 18:39:09,283 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 29 predicate places. [2023-08-30 18:39:09,284 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 764 flow [2023-08-30 18:39:09,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 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 18:39:09,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:09,284 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, 1, 1] [2023-08-30 18:39:09,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 18:39:09,285 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:09,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1860257788, now seen corresponding path program 1 times [2023-08-30 18:39:09,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:09,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170227981] [2023-08-30 18:39:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:09,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170227981] [2023-08-30 18:39:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170227981] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:39:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645112299] [2023-08-30 18:39:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:39:09,476 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 18:39:09,478 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 18:39:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:09,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:39:09,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:39:09,693 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 18:39:09,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:39:09,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645112299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:39:09,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:39:09,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-30 18:39:09,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653485120] [2023-08-30 18:39:09,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:39:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:39:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:39:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:39:09,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-30 18:39:09,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 764 flow. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 18:39:09,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:09,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-30 18:39:09,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:12,672 INFO L130 PetriNetUnfolder]: 41648/50891 cut-off events. [2023-08-30 18:39:12,673 INFO L131 PetriNetUnfolder]: For 182917/182917 co-relation queries the response was YES. [2023-08-30 18:39:12,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227042 conditions, 50891 events. 41648/50891 cut-off events. For 182917/182917 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 217306 event pairs, 3683 based on Foata normal form. 1276/52167 useless extension candidates. Maximal degree in co-relation 189713. Up to 23987 conditions per place. [2023-08-30 18:39:13,118 INFO L137 encePairwiseOnDemand]: 288/293 looper letters, 126 selfloop transitions, 14 changer transitions 53/193 dead transitions. [2023-08-30 18:39:13,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 193 transitions, 1731 flow [2023-08-30 18:39:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 18:39:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 18:39:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-08-30 18:39:13,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543344709897611 [2023-08-30 18:39:13,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-08-30 18:39:13,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-08-30 18:39:13,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:13,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-08-30 18:39:13,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 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 18:39:13,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 18:39:13,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 18:39:13,125 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 764 flow. Second operand 5 states and 796 transitions. [2023-08-30 18:39:13,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 193 transitions, 1731 flow [2023-08-30 18:39:13,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 193 transitions, 1671 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:13,609 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 639 flow [2023-08-30 18:39:13,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=639, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-08-30 18:39:13,611 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2023-08-30 18:39:13,611 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 639 flow [2023-08-30 18:39:13,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 18:39:13,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:13,611 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, 1, 1] [2023-08-30 18:39:13,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 18:39:13,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:13,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:13,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:13,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1742927478, now seen corresponding path program 2 times [2023-08-30 18:39:13,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926615081] [2023-08-30 18:39:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:13,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926615081] [2023-08-30 18:39:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926615081] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:39:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909912688] [2023-08-30 18:39:13,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:39:13,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:13,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:39:13,971 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 18:39:13,977 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 18:39:14,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 18:39:14,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:39:14,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:39:14,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:39:14,203 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 18:39:14,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:39:14,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909912688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:39:14,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:39:14,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-30 18:39:14,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334917730] [2023-08-30 18:39:14,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:39:14,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:39:14,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:14,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:39:14,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:39:14,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-30 18:39:14,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 639 flow. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 18:39:14,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:14,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-30 18:39:14,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:16,337 INFO L130 PetriNetUnfolder]: 28960/35192 cut-off events. [2023-08-30 18:39:16,337 INFO L131 PetriNetUnfolder]: For 142660/142660 co-relation queries the response was YES. [2023-08-30 18:39:16,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162237 conditions, 35192 events. 28960/35192 cut-off events. For 142660/142660 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 137323 event pairs, 2134 based on Foata normal form. 822/36014 useless extension candidates. Maximal degree in co-relation 137881. Up to 15973 conditions per place. [2023-08-30 18:39:16,489 INFO L137 encePairwiseOnDemand]: 288/293 looper letters, 131 selfloop transitions, 8 changer transitions 46/185 dead transitions. [2023-08-30 18:39:16,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 185 transitions, 1677 flow [2023-08-30 18:39:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 18:39:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 18:39:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2023-08-30 18:39:16,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406143344709897 [2023-08-30 18:39:16,492 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2023-08-30 18:39:16,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2023-08-30 18:39:16,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:16,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2023-08-30 18:39:16,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 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 18:39:16,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 18:39:16,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 18:39:16,497 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 639 flow. Second operand 5 states and 792 transitions. [2023-08-30 18:39:16,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 185 transitions, 1677 flow [2023-08-30 18:39:17,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 185 transitions, 1625 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:17,056 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 530 flow [2023-08-30 18:39:17,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=530, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2023-08-30 18:39:17,057 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-30 18:39:17,057 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 530 flow [2023-08-30 18:39:17,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 18:39:17,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:17,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:39:17,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 18:39:17,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 18:39:17,258 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:17,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:17,258 INFO L85 PathProgramCache]: Analyzing trace with hash -66181106, now seen corresponding path program 3 times [2023-08-30 18:39:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:17,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626720172] [2023-08-30 18:39:17,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:17,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:17,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:17,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626720172] [2023-08-30 18:39:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626720172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:39:17,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011536262] [2023-08-30 18:39:17,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 18:39:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:17,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:39:17,452 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:39:17,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 18:39:17,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 18:39:17,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:39:17,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:39:17,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:39:17,759 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 18:39:17,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:39:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011536262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:39:17,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:39:17,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-30 18:39:17,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686594638] [2023-08-30 18:39:17,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:39:17,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:39:17,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:17,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:39:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:39:17,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-30 18:39:17,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 530 flow. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 18:39:17,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:17,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-30 18:39:17,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:19,965 INFO L130 PetriNetUnfolder]: 26526/32073 cut-off events. [2023-08-30 18:39:19,965 INFO L131 PetriNetUnfolder]: For 127499/127499 co-relation queries the response was YES. [2023-08-30 18:39:20,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150842 conditions, 32073 events. 26526/32073 cut-off events. For 127499/127499 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 118734 event pairs, 3762 based on Foata normal form. 816/32889 useless extension candidates. Maximal degree in co-relation 129072. Up to 20247 conditions per place. [2023-08-30 18:39:20,105 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 128 selfloop transitions, 9 changer transitions 0/137 dead transitions. [2023-08-30 18:39:20,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 137 transitions, 1233 flow [2023-08-30 18:39:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:39:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:39:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 627 transitions. [2023-08-30 18:39:20,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349829351535836 [2023-08-30 18:39:20,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 627 transitions. [2023-08-30 18:39:20,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 627 transitions. [2023-08-30 18:39:20,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:20,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 627 transitions. [2023-08-30 18:39:20,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 18:39:20,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:20,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:20,110 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 530 flow. Second operand 4 states and 627 transitions. [2023-08-30 18:39:20,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 137 transitions, 1233 flow [2023-08-30 18:39:20,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 137 transitions, 1209 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:20,340 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 539 flow [2023-08-30 18:39:20,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-08-30 18:39:20,341 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-30 18:39:20,341 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 539 flow [2023-08-30 18:39:20,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 18:39:20,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:20,342 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, 1, 1] [2023-08-30 18:39:20,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 18:39:20,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 18:39:20,548 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:20,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1199386863, now seen corresponding path program 1 times [2023-08-30 18:39:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2814220] [2023-08-30 18:39:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:20,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:20,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:20,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2814220] [2023-08-30 18:39:20,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2814220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:39:20,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:39:20,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 18:39:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439306698] [2023-08-30 18:39:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:39:20,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 18:39:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 18:39:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 18:39:20,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:39:20,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 539 flow. Second operand has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 18:39:20,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:20,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:39:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:23,209 INFO L130 PetriNetUnfolder]: 28538/34525 cut-off events. [2023-08-30 18:39:23,209 INFO L131 PetriNetUnfolder]: For 152390/152390 co-relation queries the response was YES. [2023-08-30 18:39:23,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168078 conditions, 34525 events. 28538/34525 cut-off events. For 152390/152390 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 132521 event pairs, 4076 based on Foata normal form. 440/34965 useless extension candidates. Maximal degree in co-relation 128356. Up to 19933 conditions per place. [2023-08-30 18:39:23,598 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 104 selfloop transitions, 8 changer transitions 27/139 dead transitions. [2023-08-30 18:39:23,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 1166 flow [2023-08-30 18:39:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 18:39:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 18:39:23,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 718 transitions. [2023-08-30 18:39:23,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901023890784983 [2023-08-30 18:39:23,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 718 transitions. [2023-08-30 18:39:23,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 718 transitions. [2023-08-30 18:39:23,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:23,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 718 transitions. [2023-08-30 18:39:23,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 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 18:39:23,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 18:39:23,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 293.0) internal successors, (1758), 6 states have internal predecessors, (1758), 0 states have call successors, (0), 0 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 18:39:23,604 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 539 flow. Second operand 5 states and 718 transitions. [2023-08-30 18:39:23,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 1166 flow [2023-08-30 18:39:24,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 139 transitions, 1136 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:24,032 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 476 flow [2023-08-30 18:39:24,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2023-08-30 18:39:24,032 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-08-30 18:39:24,033 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 476 flow [2023-08-30 18:39:24,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 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 18:39:24,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:24,033 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, 1, 1] [2023-08-30 18:39:24,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 18:39:24,034 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:24,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1898826339, now seen corresponding path program 2 times [2023-08-30 18:39:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624123695] [2023-08-30 18:39:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:24,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 18:39:24,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:24,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624123695] [2023-08-30 18:39:24,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624123695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:39:24,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789599358] [2023-08-30 18:39:24,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:39:24,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:24,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:39:24,189 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:39:24,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 18:39:24,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 18:39:24,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:39:24,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:39:24,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:39:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:24,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:39:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 18:39:24,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789599358] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:39:24,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:39:24,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-08-30 18:39:24,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143966734] [2023-08-30 18:39:24,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:39:24,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:39:24,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:24,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:39:24,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:39:24,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:39:24,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 18:39:24,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:24,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:39:24,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:27,059 INFO L130 PetriNetUnfolder]: 31652/38211 cut-off events. [2023-08-30 18:39:27,059 INFO L131 PetriNetUnfolder]: For 158224/158224 co-relation queries the response was YES. [2023-08-30 18:39:27,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181614 conditions, 38211 events. 31652/38211 cut-off events. For 158224/158224 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 149404 event pairs, 2800 based on Foata normal form. 1040/39251 useless extension candidates. Maximal degree in co-relation 155763. Up to 25583 conditions per place. [2023-08-30 18:39:27,499 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 156 selfloop transitions, 16 changer transitions 0/172 dead transitions. [2023-08-30 18:39:27,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 172 transitions, 1418 flow [2023-08-30 18:39:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:39:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:39:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 859 transitions. [2023-08-30 18:39:27,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48862343572241185 [2023-08-30 18:39:27,502 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 859 transitions. [2023-08-30 18:39:27,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 859 transitions. [2023-08-30 18:39:27,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:27,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 859 transitions. [2023-08-30 18:39:27,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.16666666666666) internal successors, (859), 6 states have internal predecessors, (859), 0 states have call successors, (0), 0 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 18:39:27,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:39:27,507 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:39:27,507 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 476 flow. Second operand 6 states and 859 transitions. [2023-08-30 18:39:27,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 172 transitions, 1418 flow [2023-08-30 18:39:27,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 172 transitions, 1399 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:27,916 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 545 flow [2023-08-30 18:39:27,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=545, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2023-08-30 18:39:27,917 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 39 predicate places. [2023-08-30 18:39:27,917 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 545 flow [2023-08-30 18:39:27,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 18:39:27,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:27,918 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, 1, 1, 1] [2023-08-30 18:39:27,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 18:39:28,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 18:39:28,118 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:28,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2075406454, now seen corresponding path program 1 times [2023-08-30 18:39:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:28,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586052484] [2023-08-30 18:39:28,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:28,313 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 18:39:28,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586052484] [2023-08-30 18:39:28,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586052484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:39:28,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126163238] [2023-08-30 18:39:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:28,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:28,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:39:28,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:39:28,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 18:39:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:28,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:39:28,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:39:28,558 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 18:39:28,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:39:28,614 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 18:39:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126163238] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:39:28,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:39:28,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2023-08-30 18:39:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315535390] [2023-08-30 18:39:28,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:39:28,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:39:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:39:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:39:28,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 293 [2023-08-30 18:39:28,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 18:39:28,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:28,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 293 [2023-08-30 18:39:28,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:30,923 INFO L130 PetriNetUnfolder]: 26332/31772 cut-off events. [2023-08-30 18:39:30,923 INFO L131 PetriNetUnfolder]: For 184435/184435 co-relation queries the response was YES. [2023-08-30 18:39:31,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161790 conditions, 31772 events. 26332/31772 cut-off events. For 184435/184435 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 120110 event pairs, 1722 based on Foata normal form. 808/32580 useless extension candidates. Maximal degree in co-relation 139667. Up to 13156 conditions per place. [2023-08-30 18:39:31,106 INFO L137 encePairwiseOnDemand]: 284/293 looper letters, 138 selfloop transitions, 12 changer transitions 47/197 dead transitions. [2023-08-30 18:39:31,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1762 flow [2023-08-30 18:39:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:39:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:39:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 868 transitions. [2023-08-30 18:39:31,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937428896473265 [2023-08-30 18:39:31,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 868 transitions. [2023-08-30 18:39:31,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 868 transitions. [2023-08-30 18:39:31,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:31,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 868 transitions. [2023-08-30 18:39:31,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 0 states have call successors, (0), 0 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 18:39:31,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:39:31,114 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 293.0) internal successors, (2051), 7 states have internal predecessors, (2051), 0 states have call successors, (0), 0 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 18:39:31,114 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 545 flow. Second operand 6 states and 868 transitions. [2023-08-30 18:39:31,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1762 flow [2023-08-30 18:39:31,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 197 transitions, 1685 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-08-30 18:39:31,461 INFO L231 Difference]: Finished difference. Result has 93 places, 70 transitions, 548 flow [2023-08-30 18:39:31,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=93, PETRI_TRANSITIONS=70} [2023-08-30 18:39:31,461 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-30 18:39:31,461 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 70 transitions, 548 flow [2023-08-30 18:39:31,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 18:39:31,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:31,462 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, 1, 1, 1] [2023-08-30 18:39:31,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 18:39:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:31,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:31,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1490440730, now seen corresponding path program 2 times [2023-08-30 18:39:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:31,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044140098] [2023-08-30 18:39:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:31,838 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 18:39:31,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044140098] [2023-08-30 18:39:31,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044140098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:39:31,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431538283] [2023-08-30 18:39:31,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:39:31,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:31,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:39:31,841 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:39:31,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 18:39:32,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 18:39:32,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:39:32,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 18:39:32,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:39:32,110 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 18:39:32,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 18:39:32,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431538283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:39:32,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 18:39:32,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-30 18:39:32,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991186542] [2023-08-30 18:39:32,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:39:32,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 18:39:32,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:39:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 18:39:32,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:39:32,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-30 18:39:32,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 70 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 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 18:39:32,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:39:32,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-30 18:39:32,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:39:34,048 INFO L130 PetriNetUnfolder]: 22304/26705 cut-off events. [2023-08-30 18:39:34,048 INFO L131 PetriNetUnfolder]: For 140725/140725 co-relation queries the response was YES. [2023-08-30 18:39:34,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136097 conditions, 26705 events. 22304/26705 cut-off events. For 140725/140725 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 92892 event pairs, 5480 based on Foata normal form. 592/27297 useless extension candidates. Maximal degree in co-relation 118448. Up to 19461 conditions per place. [2023-08-30 18:39:34,204 INFO L137 encePairwiseOnDemand]: 289/293 looper letters, 132 selfloop transitions, 9 changer transitions 0/141 dead transitions. [2023-08-30 18:39:34,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 1299 flow [2023-08-30 18:39:34,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 18:39:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 18:39:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 627 transitions. [2023-08-30 18:39:34,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349829351535836 [2023-08-30 18:39:34,207 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 627 transitions. [2023-08-30 18:39:34,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 627 transitions. [2023-08-30 18:39:34,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:39:34,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 627 transitions. [2023-08-30 18:39:34,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.75) internal successors, (627), 4 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 18:39:34,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:34,209 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:39:34,209 INFO L175 Difference]: Start difference. First operand has 93 places, 70 transitions, 548 flow. Second operand 4 states and 627 transitions. [2023-08-30 18:39:34,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 1299 flow [2023-08-30 18:39:34,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 141 transitions, 1265 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 18:39:34,546 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 550 flow [2023-08-30 18:39:34,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2023-08-30 18:39:34,547 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 43 predicate places. [2023-08-30 18:39:34,547 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 550 flow [2023-08-30 18:39:34,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 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 18:39:34,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:39:34,548 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, 1, 1, 1, 1] [2023-08-30 18:39:34,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 18:39:34,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:34,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:39:34,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:39:34,755 INFO L85 PathProgramCache]: Analyzing trace with hash 460065354, now seen corresponding path program 1 times [2023-08-30 18:39:34,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:39:34,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541273056] [2023-08-30 18:39:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:34,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:39:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 18:39:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:39:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541273056] [2023-08-30 18:39:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541273056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:39:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192724986] [2023-08-30 18:39:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:39:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:39:35,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:39:35,309 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:39:35,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 18:39:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:39:44,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 18:39:44,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:39:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 18:39:46,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:40:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:40:46,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192724986] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:40:46,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:40:46,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-08-30 18:40:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086927606] [2023-08-30 18:40:46,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:40:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 18:40:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:40:46,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 18:40:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=94, Unknown=4, NotChecked=0, Total=132 [2023-08-30 18:40:49,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:40:51,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 293 [2023-08-30 18:40:51,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 550 flow. Second operand has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 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 18:40:51,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:40:51,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 293 [2023-08-30 18:40:51,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:41:04,925 WARN L222 SmtUtils]: Spent 13.70s on a formula simplification. DAG size of input: 82 DAG size of output: 27 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 18:41:10,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:12,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:14,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:16,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:23,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:41,789 WARN L222 SmtUtils]: Spent 17.18s on a formula simplification. DAG size of input: 76 DAG size of output: 27 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 18:41:43,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:51,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:54,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:41:58,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:42:00,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:42:02,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:42:11,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:42:55,087 INFO L130 PetriNetUnfolder]: 211889/255337 cut-off events. [2023-08-30 18:42:55,087 INFO L131 PetriNetUnfolder]: For 1369737/1369737 co-relation queries the response was YES. [2023-08-30 18:42:56,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319013 conditions, 255337 events. 211889/255337 cut-off events. For 1369737/1369737 co-relation queries the response was YES. Maximal size of possible extension queue 5953. Compared 1204033 event pairs, 4385 based on Foata normal form. 3383/258720 useless extension candidates. Maximal degree in co-relation 1037177. Up to 96079 conditions per place. [2023-08-30 18:42:57,107 INFO L137 encePairwiseOnDemand]: 268/293 looper letters, 704 selfloop transitions, 223 changer transitions 501/1428 dead transitions. [2023-08-30 18:42:57,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 1428 transitions, 12438 flow [2023-08-30 18:42:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-30 18:42:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-30 18:42:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5237 transitions. [2023-08-30 18:42:57,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964922260144103 [2023-08-30 18:42:57,117 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5237 transitions. [2023-08-30 18:42:57,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5237 transitions. [2023-08-30 18:42:57,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:42:57,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5237 transitions. [2023-08-30 18:42:57,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 145.47222222222223) internal successors, (5237), 36 states have internal predecessors, (5237), 0 states have call successors, (0), 0 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 18:42:57,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 293.0) internal successors, (10841), 37 states have internal predecessors, (10841), 0 states have call successors, (0), 0 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 18:42:57,137 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 293.0) internal successors, (10841), 37 states have internal predecessors, (10841), 0 states have call successors, (0), 0 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 18:42:57,137 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 550 flow. Second operand 36 states and 5237 transitions. [2023-08-30 18:42:57,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 1428 transitions, 12438 flow [2023-08-30 18:43:09,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 1428 transitions, 12237 flow, removed 65 selfloop flow, removed 2 redundant places. [2023-08-30 18:43:09,476 INFO L231 Difference]: Finished difference. Result has 148 places, 323 transitions, 3449 flow [2023-08-30 18:43:09,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3449, PETRI_PLACES=148, PETRI_TRANSITIONS=323} [2023-08-30 18:43:09,476 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 98 predicate places. [2023-08-30 18:43:09,476 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 323 transitions, 3449 flow [2023-08-30 18:43:09,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 129.25) internal successors, (1551), 12 states have internal predecessors, (1551), 0 states have call successors, (0), 0 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 18:43:09,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:43:09,477 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, 1, 1, 1, 1] [2023-08-30 18:43:09,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-30 18:43:09,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 18:43:09,678 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 18:43:09,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:43:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1244368104, now seen corresponding path program 2 times [2023-08-30 18:43:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:43:09,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892045034] [2023-08-30 18:43:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:43:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:43:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:43:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:43:10,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:43:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892045034] [2023-08-30 18:43:10,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892045034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:43:10,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016029295] [2023-08-30 18:43:10,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 18:43:10,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:43:10,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:43:10,201 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:43:10,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 18:43:22,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 18:43:22,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 18:43:22,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 18:43:22,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:43:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 18:43:25,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:43:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 18:43:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016029295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:43:58,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:43:58,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 15 [2023-08-30 18:43:58,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850792821] [2023-08-30 18:43:58,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:43:58,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 18:43:58,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:43:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 18:43:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-08-30 18:44:03,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:44:04,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 293 [2023-08-30 18:44:04,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 323 transitions, 3449 flow. Second operand has 17 states, 17 states have (on average 124.52941176470588) internal successors, (2117), 17 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:44:04,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:44:04,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 293 [2023-08-30 18:44:04,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:44:06,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:44:08,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:44:14,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:44:18,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:44:20,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:44:22,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:45:23,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:45:41,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:45:43,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:45:45,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:45:47,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:45:49,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:45:51,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:46:06,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:46:26,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:46:45,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:46:53,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:46:55,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:46:59,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:03,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:06,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:11,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:13,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:15,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:17,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:19,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:32,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:34,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:47:36,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:14,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:16,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:18,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:20,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:37,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:39,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:41,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:48:43,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:08,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:11,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:12,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:16,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:28,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:30,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:42,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:49:44,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:50:20,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:50:50,534 WARN L222 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 85 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 18:50:53,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:51:22,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:51:52,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:51:58,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:52:00,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:52:08,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:52:11,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:52:13,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-30 18:52:16,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15