./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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 ../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.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 ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:52:58,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:52:58,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:52:58,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:52:58,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:52:58,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:52:58,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:52:58,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:52:58,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:52:58,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:52:58,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:52:58,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:52:58,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:52:58,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:52:58,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:52:58,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:52:58,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:52:58,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:52:58,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:52:58,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:52:58,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:52:58,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:52:58,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:52:58,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:52:58,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:52:58,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:52:58,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:52:58,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:52:58,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:52:58,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:52:58,816 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:52:58,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:52:58,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:52:58,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:52:58,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:52:58,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:52:58,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:52:58,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:52:58,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:52:58,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:52:58,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:52:58,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:52:58,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:52:58,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:52:58,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:52:58,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:52:58,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:52:58,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:52:58,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:52:58,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:52:58,848 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:52:58,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:52:58,849 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:52:58,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:52:58,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:52:58,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:52:58,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:52:58,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:52:58,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:52:58,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:52:58,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:52:58,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:52:58,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:52:58,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:52:58,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:52:58,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:52:58,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:52:58,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:52:58,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:52:58,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:52:58,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:52:58,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:52:58,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:52:58,853 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:52:58,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:52:58,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:52:58,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef17cfb4a2c8358ea255253edc0610051a64c94a86cd92ff89d3b074c51925f6 [2021-12-21 12:52:59,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:52:59,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:52:59,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:52:59,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:52:59,079 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:52:59,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-12-21 12:52:59,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcbaf379a/085d424ca77e4c339c4e1f1f61695702/FLAGf1c993f39 [2021-12-21 12:52:59,570 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:52:59,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c [2021-12-21 12:52:59,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcbaf379a/085d424ca77e4c339c4e1f1f61695702/FLAGf1c993f39 [2021-12-21 12:52:59,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcbaf379a/085d424ca77e4c339c4e1f1f61695702 [2021-12-21 12:52:59,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:52:59,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:52:59,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:52:59,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:52:59,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:52:59,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:52:59" (1/1) ... [2021-12-21 12:52:59,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359963a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:52:59, skipping insertion in model container [2021-12-21 12:52:59,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:52:59" (1/1) ... [2021-12-21 12:52:59,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:52:59,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:52:59,823 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-12-21 12:53:00,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:53:00,033 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:53:00,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product23.cil.c[1811,1824] [2021-12-21 12:53:00,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:53:00,145 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:53:00,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00 WrapperNode [2021-12-21 12:53:00,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:53:00,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:53:00,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:53:00,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:53:00,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,200 INFO L137 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 873 [2021-12-21 12:53:00,200 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:53:00,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:53:00,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:53:00,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:53:00,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:53:00,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:53:00,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:53:00,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:53:00,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (1/1) ... [2021-12-21 12:53:00,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:53:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:00,293 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) [2021-12-21 12:53:00,297 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 [2021-12-21 12:53:00,316 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-12-21 12:53:00,316 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-12-21 12:53:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:53:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-21 12:53:00,317 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-21 12:53:00,317 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-21 12:53:00,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-21 12:53:00,318 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-21 12:53:00,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-21 12:53:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2021-12-21 12:53:00,319 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2021-12-21 12:53:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:53:00,319 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:53:00,319 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-21 12:53:00,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-21 12:53:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:53:00,320 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:53:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-21 12:53:00,320 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-21 12:53:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:53:00,320 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:53:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:53:00,320 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:53:00,320 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:53:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:53:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-21 12:53:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-21 12:53:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:53:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:53:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:53:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:53:00,321 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:53:00,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:53:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-21 12:53:00,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-21 12:53:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:53:00,322 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:53:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:53:00,322 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:53:00,322 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:53:00,323 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:53:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:53:00,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:53:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:53:00,323 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:53:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:53:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-21 12:53:00,323 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-21 12:53:00,323 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:53:00,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:53:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:53:00,324 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:53:00,324 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:53:00,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:53:00,325 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-12-21 12:53:00,326 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-12-21 12:53:00,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:53:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:53:00,327 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:53:00,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:53:00,494 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:53:00,495 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:53:01,099 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:53:01,105 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:53:01,106 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 12:53:01,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:53:01 BoogieIcfgContainer [2021-12-21 12:53:01,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:53:01,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:53:01,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:53:01,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:53:01,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:52:59" (1/3) ... [2021-12-21 12:53:01,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e661f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:53:01, skipping insertion in model container [2021-12-21 12:53:01,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:00" (2/3) ... [2021-12-21 12:53:01,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e661f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:53:01, skipping insertion in model container [2021-12-21 12:53:01,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:53:01" (3/3) ... [2021-12-21 12:53:01,113 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product23.cil.c [2021-12-21 12:53:01,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:53:01,117 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:53:01,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:53:01,152 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:53:01,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:53:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 482 states have (on average 1.6742738589211619) internal successors, (807), 500 states have internal predecessors, (807), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-21 12:53:01,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 12:53:01,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:01,202 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:01,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1996371556, now seen corresponding path program 1 times [2021-12-21 12:53:01,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:01,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226330466] [2021-12-21 12:53:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:01,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 12:53:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:53:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:53:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:53:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:53:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 12:53:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 12:53:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:53:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 12:53:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:01,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:01,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226330466] [2021-12-21 12:53:01,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226330466] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566121069] [2021-12-21 12:53:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:01,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:01,694 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) [2021-12-21 12:53:01,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:53:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:01,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:01,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 12:53:02,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:02,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566121069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:02,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:02,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-21 12:53:02,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744385540] [2021-12-21 12:53:02,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:02,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:02,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:53:02,206 INFO L87 Difference]: Start difference. First operand has 620 states, 482 states have (on average 1.6742738589211619) internal successors, (807), 500 states have internal predecessors, (807), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:02,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:02,344 INFO L93 Difference]: Finished difference Result 1239 states and 2062 transitions. [2021-12-21 12:53:02,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:02,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 131 [2021-12-21 12:53:02,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:02,357 INFO L225 Difference]: With dead ends: 1239 [2021-12-21 12:53:02,358 INFO L226 Difference]: Without dead ends: 619 [2021-12-21 12:53:02,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:02,366 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 26 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2979 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:02,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 2979 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-12-21 12:53:02,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2021-12-21 12:53:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 483 states have (on average 1.6583850931677018) internal successors, (801), 499 states have internal predecessors, (801), 108 states have call successors, (108), 29 states have call predecessors, (108), 27 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-21 12:53:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1014 transitions. [2021-12-21 12:53:02,432 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1014 transitions. Word has length 131 [2021-12-21 12:53:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:02,432 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 1014 transitions. [2021-12-21 12:53:02,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1014 transitions. [2021-12-21 12:53:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 12:53:02,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:02,437 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:02,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 12:53:02,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-21 12:53:02,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:02,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1920336744, now seen corresponding path program 1 times [2021-12-21 12:53:02,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:02,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081274613] [2021-12-21 12:53:02,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:02,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 12:53:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:53:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:53:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:53:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:53:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 12:53:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 12:53:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 12:53:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 12:53:02,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081274613] [2021-12-21 12:53:02,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081274613] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:02,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415388185] [2021-12-21 12:53:02,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:02,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:02,903 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) [2021-12-21 12:53:02,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:53:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:03,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:53:03,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:03,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415388185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:03,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:03,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-21 12:53:03,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306093387] [2021-12-21 12:53:03,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:03,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:03,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:03,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:03,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:53:03,340 INFO L87 Difference]: Start difference. First operand 619 states and 1014 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:03,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:03,482 INFO L93 Difference]: Finished difference Result 1252 states and 2055 transitions. [2021-12-21 12:53:03,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:03,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2021-12-21 12:53:03,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:03,487 INFO L225 Difference]: With dead ends: 1252 [2021-12-21 12:53:03,487 INFO L226 Difference]: Without dead ends: 643 [2021-12-21 12:53:03,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:03,502 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 119 mSDsluCounter, 4872 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5868 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:03,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 5868 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:03,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-21 12:53:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 632. [2021-12-21 12:53:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 493 states have (on average 1.6551724137931034) internal successors, (816), 511 states have internal predecessors, (816), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2021-12-21 12:53:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1036 transitions. [2021-12-21 12:53:03,571 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1036 transitions. Word has length 133 [2021-12-21 12:53:03,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:03,572 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 1036 transitions. [2021-12-21 12:53:03,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:03,572 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1036 transitions. [2021-12-21 12:53:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 12:53:03,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:03,577 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:03,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:03,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-21 12:53:03,792 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1020029407, now seen corresponding path program 1 times [2021-12-21 12:53:03,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:03,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479434758] [2021-12-21 12:53:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:03,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 12:53:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:53:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:53:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:03,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 12:53:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 12:53:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 12:53:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:04,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:04,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479434758] [2021-12-21 12:53:04,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479434758] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:04,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817434952] [2021-12-21 12:53:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:04,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:04,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:04,042 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) [2021-12-21 12:53:04,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 12:53:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:04,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:53:04,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:04,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817434952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:04,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:04,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-21 12:53:04,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526872189] [2021-12-21 12:53:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:04,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:04,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:04,507 INFO L87 Difference]: Start difference. First operand 632 states and 1036 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:04,655 INFO L93 Difference]: Finished difference Result 1272 states and 2088 transitions. [2021-12-21 12:53:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:04,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-21 12:53:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:04,659 INFO L225 Difference]: With dead ends: 1272 [2021-12-21 12:53:04,659 INFO L226 Difference]: Without dead ends: 652 [2021-12-21 12:53:04,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:04,662 INFO L933 BasicCegarLoop]: 994 mSDtfsCounter, 130 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5845 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:04,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 5845 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-21 12:53:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 632. [2021-12-21 12:53:04,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 493 states have (on average 1.6551724137931034) internal successors, (816), 511 states have internal predecessors, (816), 109 states have call successors, (109), 29 states have call predecessors, (109), 29 states have return successors, (111), 104 states have call predecessors, (111), 106 states have call successors, (111) [2021-12-21 12:53:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1036 transitions. [2021-12-21 12:53:04,685 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1036 transitions. Word has length 134 [2021-12-21 12:53:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:04,685 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 1036 transitions. [2021-12-21 12:53:04,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1036 transitions. [2021-12-21 12:53:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 12:53:04,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:04,688 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:04,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 12:53:04,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:04,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:04,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1691285707, now seen corresponding path program 1 times [2021-12-21 12:53:04,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:04,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266983213] [2021-12-21 12:53:04,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:04,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:04,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:53:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 12:53:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:53:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:53:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 12:53:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 12:53:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 12:53:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:05,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:05,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266983213] [2021-12-21 12:53:05,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266983213] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:05,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962901293] [2021-12-21 12:53:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:05,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:05,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:05,058 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) [2021-12-21 12:53:05,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 12:53:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:05,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 12:53:05,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:05,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962901293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:05,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:05,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-21 12:53:05,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189210810] [2021-12-21 12:53:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:05,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:05,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:53:05,470 INFO L87 Difference]: Start difference. First operand 632 states and 1036 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:05,529 INFO L93 Difference]: Finished difference Result 1267 states and 2078 transitions. [2021-12-21 12:53:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:05,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2021-12-21 12:53:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:05,533 INFO L225 Difference]: With dead ends: 1267 [2021-12-21 12:53:05,533 INFO L226 Difference]: Without dead ends: 643 [2021-12-21 12:53:05,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:05,537 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 20 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:05,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2947 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-21 12:53:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2021-12-21 12:53:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 501 states have (on average 1.6467065868263473) internal successors, (825), 519 states have internal predecessors, (825), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2021-12-21 12:53:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1044 transitions. [2021-12-21 12:53:05,557 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1044 transitions. Word has length 134 [2021-12-21 12:53:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:05,558 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1044 transitions. [2021-12-21 12:53:05,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1044 transitions. [2021-12-21 12:53:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 12:53:05,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:05,561 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:05,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:05,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:05,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash 284457684, now seen corresponding path program 1 times [2021-12-21 12:53:05,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:05,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043508270] [2021-12-21 12:53:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:05,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:53:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:53:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 12:53:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:53:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 12:53:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 12:53:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:05,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:05,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043508270] [2021-12-21 12:53:05,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043508270] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:05,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916190184] [2021-12-21 12:53:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:05,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:05,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:05,953 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) [2021-12-21 12:53:05,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 12:53:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:06,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:53:06,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:06,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916190184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:06,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:06,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-21 12:53:06,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94072104] [2021-12-21 12:53:06,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:06,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:06,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:06,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:06,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:06,332 INFO L87 Difference]: Start difference. First operand 641 states and 1044 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:06,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:06,424 INFO L93 Difference]: Finished difference Result 1281 states and 2091 transitions. [2021-12-21 12:53:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2021-12-21 12:53:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:06,427 INFO L225 Difference]: With dead ends: 1281 [2021-12-21 12:53:06,427 INFO L226 Difference]: Without dead ends: 663 [2021-12-21 12:53:06,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:06,430 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 141 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:06,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 5816 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-12-21 12:53:06,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 641. [2021-12-21 12:53:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 501 states have (on average 1.6467065868263473) internal successors, (825), 519 states have internal predecessors, (825), 109 states have call successors, (109), 30 states have call predecessors, (109), 30 states have return successors, (110), 104 states have call predecessors, (110), 106 states have call successors, (110) [2021-12-21 12:53:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1044 transitions. [2021-12-21 12:53:06,446 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1044 transitions. Word has length 135 [2021-12-21 12:53:06,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:06,446 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1044 transitions. [2021-12-21 12:53:06,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1044 transitions. [2021-12-21 12:53:06,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-21 12:53:06,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:06,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:06,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:06,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:06,668 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1558928859, now seen corresponding path program 1 times [2021-12-21 12:53:06,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:06,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013384820] [2021-12-21 12:53:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:06,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 12:53:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:53:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:53:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 12:53:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 12:53:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 12:53:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 12:53:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 12:53:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 12:53:06,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013384820] [2021-12-21 12:53:06,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013384820] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:06,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222868610] [2021-12-21 12:53:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:06,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:06,832 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) [2021-12-21 12:53:06,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 12:53:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:07,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:53:07,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:07,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222868610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:07,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:07,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-21 12:53:07,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51621534] [2021-12-21 12:53:07,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:07,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:07,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:07,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:07,192 INFO L87 Difference]: Start difference. First operand 641 states and 1044 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:07,313 INFO L93 Difference]: Finished difference Result 1313 states and 2159 transitions. [2021-12-21 12:53:07,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:07,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2021-12-21 12:53:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:07,316 INFO L225 Difference]: With dead ends: 1313 [2021-12-21 12:53:07,317 INFO L226 Difference]: Without dead ends: 695 [2021-12-21 12:53:07,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:53:07,320 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 167 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:07,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2790 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-12-21 12:53:07,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 686. [2021-12-21 12:53:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-21 12:53:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-21 12:53:07,335 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 136 [2021-12-21 12:53:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:07,335 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-21 12:53:07,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-21 12:53:07,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-21 12:53:07,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:07,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:07,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:07,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:07,557 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash 384006202, now seen corresponding path program 1 times [2021-12-21 12:53:07,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:07,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797116656] [2021-12-21 12:53:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:07,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 12:53:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:53:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:53:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 12:53:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 12:53:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 12:53:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 12:53:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 12:53:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:53:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:07,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797116656] [2021-12-21 12:53:07,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797116656] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:07,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325877903] [2021-12-21 12:53:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:07,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:07,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:07,744 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) [2021-12-21 12:53:07,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 12:53:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:07,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:07,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:53:08,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:08,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325877903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:08,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:08,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-21 12:53:08,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592291183] [2021-12-21 12:53:08,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:08,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:08,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:08,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:08,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:08,156 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:08,283 INFO L93 Difference]: Finished difference Result 1383 states and 2274 transitions. [2021-12-21 12:53:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2021-12-21 12:53:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:08,287 INFO L225 Difference]: With dead ends: 1383 [2021-12-21 12:53:08,287 INFO L226 Difference]: Without dead ends: 720 [2021-12-21 12:53:08,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:53:08,291 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 140 mSDsluCounter, 5784 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6765 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:08,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 6765 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-12-21 12:53:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 686. [2021-12-21 12:53:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-21 12:53:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-21 12:53:08,315 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 137 [2021-12-21 12:53:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:08,315 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-21 12:53:08,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-21 12:53:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-21 12:53:08,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:08,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:08,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:08,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:08,536 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:08,536 INFO L85 PathProgramCache]: Analyzing trace with hash -941121245, now seen corresponding path program 1 times [2021-12-21 12:53:08,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:08,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434977336] [2021-12-21 12:53:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:08,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:53:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 12:53:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 12:53:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:53:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 12:53:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 12:53:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 12:53:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 12:53:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:08,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:08,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434977336] [2021-12-21 12:53:08,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434977336] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:08,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874491059] [2021-12-21 12:53:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:08,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:08,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:08,751 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) [2021-12-21 12:53:08,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 12:53:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:08,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:09,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:53:09,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:09,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874491059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:09,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:09,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-21 12:53:09,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124590274] [2021-12-21 12:53:09,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:09,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:09,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:09,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:09,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:09,233 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:09,365 INFO L93 Difference]: Finished difference Result 1383 states and 2274 transitions. [2021-12-21 12:53:09,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:09,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 138 [2021-12-21 12:53:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:09,369 INFO L225 Difference]: With dead ends: 1383 [2021-12-21 12:53:09,369 INFO L226 Difference]: Without dead ends: 720 [2021-12-21 12:53:09,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:53:09,372 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 150 mSDsluCounter, 5772 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6753 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:09,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 6753 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-12-21 12:53:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 686. [2021-12-21 12:53:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-21 12:53:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-21 12:53:09,388 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 138 [2021-12-21 12:53:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:09,388 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-21 12:53:09,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-21 12:53:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-21 12:53:09,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:09,391 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:09,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:09,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-21 12:53:09,609 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash -690519521, now seen corresponding path program 1 times [2021-12-21 12:53:09,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:09,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389002148] [2021-12-21 12:53:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:09,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:53:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:53:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 12:53:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:53:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 12:53:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 12:53:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:53:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 12:53:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:09,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:09,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389002148] [2021-12-21 12:53:09,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389002148] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:09,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117173893] [2021-12-21 12:53:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:09,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:09,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:09,796 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) [2021-12-21 12:53:09,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 12:53:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:10,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:53:10,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:10,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117173893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:10,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:10,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-21 12:53:10,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767669151] [2021-12-21 12:53:10,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:10,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:10,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:10,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:10,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:10,196 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:10,316 INFO L93 Difference]: Finished difference Result 1374 states and 2259 transitions. [2021-12-21 12:53:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 139 [2021-12-21 12:53:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:10,319 INFO L225 Difference]: With dead ends: 1374 [2021-12-21 12:53:10,319 INFO L226 Difference]: Without dead ends: 711 [2021-12-21 12:53:10,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:53:10,322 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 160 mSDsluCounter, 5760 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6741 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:10,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 6741 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:10,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-12-21 12:53:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 686. [2021-12-21 12:53:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6678899082568808) internal successors, (909), 563 states have internal predecessors, (909), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-21 12:53:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1127 transitions. [2021-12-21 12:53:10,336 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1127 transitions. Word has length 139 [2021-12-21 12:53:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:10,336 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1127 transitions. [2021-12-21 12:53:10,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1127 transitions. [2021-12-21 12:53:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-21 12:53:10,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:10,339 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:10,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-21 12:53:10,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:10,574 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:10,575 INFO L85 PathProgramCache]: Analyzing trace with hash -974141699, now seen corresponding path program 1 times [2021-12-21 12:53:10,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:10,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630061530] [2021-12-21 12:53:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:10,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:53:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:53:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 12:53:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:53:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 12:53:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 12:53:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:53:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 12:53:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-21 12:53:10,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:10,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630061530] [2021-12-21 12:53:10,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630061530] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:10,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644107663] [2021-12-21 12:53:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:10,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:10,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:10,707 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) [2021-12-21 12:53:10,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 12:53:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 12:53:11,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:11,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644107663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:11,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:11,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-21 12:53:11,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273255711] [2021-12-21 12:53:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:11,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:11,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:11,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:11,043 INFO L87 Difference]: Start difference. First operand 686 states and 1127 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:11,110 INFO L93 Difference]: Finished difference Result 1338 states and 2206 transitions. [2021-12-21 12:53:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2021-12-21 12:53:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:11,113 INFO L225 Difference]: With dead ends: 1338 [2021-12-21 12:53:11,114 INFO L226 Difference]: Without dead ends: 686 [2021-12-21 12:53:11,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:11,116 INFO L933 BasicCegarLoop]: 984 mSDtfsCounter, 35 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:11,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2945 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:11,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-21 12:53:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2021-12-21 12:53:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 545 states have (on average 1.6587155963302753) internal successors, (904), 563 states have internal predecessors, (904), 109 states have call successors, (109), 31 states have call predecessors, (109), 31 states have return successors, (109), 104 states have call predecessors, (109), 106 states have call successors, (109) [2021-12-21 12:53:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1122 transitions. [2021-12-21 12:53:11,129 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1122 transitions. Word has length 139 [2021-12-21 12:53:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:11,130 INFO L470 AbstractCegarLoop]: Abstraction has 686 states and 1122 transitions. [2021-12-21 12:53:11,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1122 transitions. [2021-12-21 12:53:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-21 12:53:11,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:11,132 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:11,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:11,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 12:53:11,350 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1551720476, now seen corresponding path program 1 times [2021-12-21 12:53:11,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:11,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902976868] [2021-12-21 12:53:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:11,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:53:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:53:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:53:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:53:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 12:53:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:53:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 12:53:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 12:53:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 12:53:11,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902976868] [2021-12-21 12:53:11,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902976868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943028711] [2021-12-21 12:53:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:11,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:11,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:11,534 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) [2021-12-21 12:53:11,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 12:53:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:11,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:11,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:11,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943028711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:11,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:11,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-21 12:53:11,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766860354] [2021-12-21 12:53:11,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:11,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:11,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:11,926 INFO L87 Difference]: Start difference. First operand 686 states and 1122 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:12,003 INFO L93 Difference]: Finished difference Result 1306 states and 2138 transitions. [2021-12-21 12:53:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:12,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 140 [2021-12-21 12:53:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:12,007 INFO L225 Difference]: With dead ends: 1306 [2021-12-21 12:53:12,007 INFO L226 Difference]: Without dead ends: 712 [2021-12-21 12:53:12,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:12,010 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 116 mSDsluCounter, 4839 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 5827 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:12,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 5827 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-12-21 12:53:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 699. [2021-12-21 12:53:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 555 states have (on average 1.6558558558558558) internal successors, (919), 575 states have internal predecessors, (919), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-21 12:53:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1143 transitions. [2021-12-21 12:53:12,024 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1143 transitions. Word has length 140 [2021-12-21 12:53:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:12,025 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1143 transitions. [2021-12-21 12:53:12,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1143 transitions. [2021-12-21 12:53:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-21 12:53:12,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:12,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:12,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-21 12:53:12,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-21 12:53:12,260 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:12,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:12,260 INFO L85 PathProgramCache]: Analyzing trace with hash -914031085, now seen corresponding path program 1 times [2021-12-21 12:53:12,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:12,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130746936] [2021-12-21 12:53:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:12,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 12:53:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 12:53:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 12:53:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 12:53:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:53:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 12:53:12,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:12,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130746936] [2021-12-21 12:53:12,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130746936] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:12,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530001730] [2021-12-21 12:53:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:12,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:12,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:12,426 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) [2021-12-21 12:53:12,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 12:53:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:12,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:12,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:12,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530001730] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:12,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:12,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-21 12:53:12,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139256174] [2021-12-21 12:53:12,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:12,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:12,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:12,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:12,872 INFO L87 Difference]: Start difference. First operand 699 states and 1143 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:12,948 INFO L93 Difference]: Finished difference Result 1315 states and 2153 transitions. [2021-12-21 12:53:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:12,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2021-12-21 12:53:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:12,952 INFO L225 Difference]: With dead ends: 1315 [2021-12-21 12:53:12,952 INFO L226 Difference]: Without dead ends: 721 [2021-12-21 12:53:12,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:12,955 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 127 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 5815 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:12,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 5815 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-12-21 12:53:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 699. [2021-12-21 12:53:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 555 states have (on average 1.6558558558558558) internal successors, (919), 575 states have internal predecessors, (919), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-21 12:53:12,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1143 transitions. [2021-12-21 12:53:12,970 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1143 transitions. Word has length 141 [2021-12-21 12:53:12,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:12,971 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1143 transitions. [2021-12-21 12:53:12,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:12,971 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1143 transitions. [2021-12-21 12:53:12,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-21 12:53:12,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:12,974 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:13,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:13,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 12:53:13,193 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2039910431, now seen corresponding path program 1 times [2021-12-21 12:53:13,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:13,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92112] [2021-12-21 12:53:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:13,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 12:53:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 12:53:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 12:53:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 12:53:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 12:53:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:53:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-21 12:53:13,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:13,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92112] [2021-12-21 12:53:13,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92112] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:13,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304348928] [2021-12-21 12:53:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:13,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:13,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:13,344 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) [2021-12-21 12:53:13,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 12:53:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:13,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 12:53:13,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:13,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304348928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:13,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:13,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-21 12:53:13,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731806028] [2021-12-21 12:53:13,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:13,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:13,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:13,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:13,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:13,759 INFO L87 Difference]: Start difference. First operand 699 states and 1143 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:13,797 INFO L93 Difference]: Finished difference Result 1360 states and 2236 transitions. [2021-12-21 12:53:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 12:53:13,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2021-12-21 12:53:13,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:13,800 INFO L225 Difference]: With dead ends: 1360 [2021-12-21 12:53:13,800 INFO L226 Difference]: Without dead ends: 699 [2021-12-21 12:53:13,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:13,803 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 10 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:13,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2947 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-21 12:53:13,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2021-12-21 12:53:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 555 states have (on average 1.6504504504504505) internal successors, (916), 575 states have internal predecessors, (916), 110 states have call successors, (110), 31 states have call predecessors, (110), 33 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-21 12:53:13,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1140 transitions. [2021-12-21 12:53:13,841 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1140 transitions. Word has length 141 [2021-12-21 12:53:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:13,841 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1140 transitions. [2021-12-21 12:53:13,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1140 transitions. [2021-12-21 12:53:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 12:53:13,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:13,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:13,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:14,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 12:53:14,063 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:14,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash 428979688, now seen corresponding path program 1 times [2021-12-21 12:53:14,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:14,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287295261] [2021-12-21 12:53:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:14,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:53:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:53:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:53:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:53:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 12:53:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 12:53:14,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:14,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287295261] [2021-12-21 12:53:14,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287295261] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:14,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131229045] [2021-12-21 12:53:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:14,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:14,224 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) [2021-12-21 12:53:14,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-21 12:53:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:14,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-21 12:53:14,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:14,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131229045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:14,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:14,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-21 12:53:14,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896629358] [2021-12-21 12:53:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:14,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:14,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:14,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:14,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:14,644 INFO L87 Difference]: Start difference. First operand 699 states and 1140 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:14,753 INFO L93 Difference]: Finished difference Result 1356 states and 2231 transitions. [2021-12-21 12:53:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:14,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2021-12-21 12:53:14,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:14,756 INFO L225 Difference]: With dead ends: 1356 [2021-12-21 12:53:14,756 INFO L226 Difference]: Without dead ends: 762 [2021-12-21 12:53:14,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:53:14,758 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 237 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:14,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2770 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:14,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-12-21 12:53:14,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 744. [2021-12-21 12:53:14,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 599 states have (on average 1.669449081803005) internal successors, (1000), 619 states have internal predecessors, (1000), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2021-12-21 12:53:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1221 transitions. [2021-12-21 12:53:14,772 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1221 transitions. Word has length 142 [2021-12-21 12:53:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:14,772 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1221 transitions. [2021-12-21 12:53:14,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:14,772 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1221 transitions. [2021-12-21 12:53:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 12:53:14,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:14,775 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:14,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-21 12:53:14,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:14,993 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash -271539734, now seen corresponding path program 1 times [2021-12-21 12:53:14,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:14,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494526992] [2021-12-21 12:53:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:14,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:15,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:53:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:53:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:53:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:53:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 12:53:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 12:53:15,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494526992] [2021-12-21 12:53:15,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494526992] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699302632] [2021-12-21 12:53:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:15,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:15,126 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:15,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-21 12:53:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:15,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:15,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:15,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699302632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:15,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:15,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-21 12:53:15,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929587069] [2021-12-21 12:53:15,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:15,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:15,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:15,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:53:15,593 INFO L87 Difference]: Start difference. First operand 744 states and 1221 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:15,718 INFO L93 Difference]: Finished difference Result 1372 states and 2247 transitions. [2021-12-21 12:53:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 142 [2021-12-21 12:53:15,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:15,722 INFO L225 Difference]: With dead ends: 1372 [2021-12-21 12:53:15,722 INFO L226 Difference]: Without dead ends: 778 [2021-12-21 12:53:15,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:15,724 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 138 mSDsluCounter, 5745 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6718 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:15,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 6718 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-21 12:53:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 744. [2021-12-21 12:53:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 599 states have (on average 1.669449081803005) internal successors, (1000), 619 states have internal predecessors, (1000), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2021-12-21 12:53:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1221 transitions. [2021-12-21 12:53:15,741 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1221 transitions. Word has length 142 [2021-12-21 12:53:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:15,742 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1221 transitions. [2021-12-21 12:53:15,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1221 transitions. [2021-12-21 12:53:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-21 12:53:15,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:15,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:15,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:15,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 12:53:15,963 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:15,964 INFO L85 PathProgramCache]: Analyzing trace with hash 749827415, now seen corresponding path program 1 times [2021-12-21 12:53:15,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:15,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213164348] [2021-12-21 12:53:15,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:15,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:53:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:53:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 12:53:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 12:53:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 12:53:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 12:53:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 12:53:16,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:16,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213164348] [2021-12-21 12:53:16,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213164348] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:16,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111916444] [2021-12-21 12:53:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:16,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:16,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:16,113 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:16,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-21 12:53:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:16,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:53:16,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:16,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111916444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:16,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:16,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-21 12:53:16,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023283157] [2021-12-21 12:53:16,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:16,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:16,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:16,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:16,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:53:16,508 INFO L87 Difference]: Start difference. First operand 744 states and 1221 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:16,643 INFO L93 Difference]: Finished difference Result 1363 states and 2233 transitions. [2021-12-21 12:53:16,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:16,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 143 [2021-12-21 12:53:16,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:16,647 INFO L225 Difference]: With dead ends: 1363 [2021-12-21 12:53:16,647 INFO L226 Difference]: Without dead ends: 769 [2021-12-21 12:53:16,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:16,649 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 148 mSDsluCounter, 5733 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6706 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:16,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 6706 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:16,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-12-21 12:53:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 744. [2021-12-21 12:53:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 599 states have (on average 1.669449081803005) internal successors, (1000), 619 states have internal predecessors, (1000), 110 states have call successors, (110), 32 states have call predecessors, (110), 34 states have return successors, (111), 105 states have call predecessors, (111), 107 states have call successors, (111) [2021-12-21 12:53:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1221 transitions. [2021-12-21 12:53:16,666 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1221 transitions. Word has length 143 [2021-12-21 12:53:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:16,666 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1221 transitions. [2021-12-21 12:53:16,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:16,666 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1221 transitions. [2021-12-21 12:53:16,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 12:53:16,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:16,669 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:16,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:16,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-21 12:53:16,883 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1430933711, now seen corresponding path program 1 times [2021-12-21 12:53:16,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:16,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054050934] [2021-12-21 12:53:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:16,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 12:53:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 12:53:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 12:53:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 12:53:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 12:53:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 12:53:17,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:17,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054050934] [2021-12-21 12:53:17,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054050934] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:17,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045958288] [2021-12-21 12:53:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:17,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:17,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:17,052 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:17,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-21 12:53:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:17,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 12:53:17,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:17,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045958288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:17,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:17,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:17,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329222908] [2021-12-21 12:53:17,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:17,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:17,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:17,425 INFO L87 Difference]: Start difference. First operand 744 states and 1221 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:17,776 INFO L93 Difference]: Finished difference Result 1342 states and 2230 transitions. [2021-12-21 12:53:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:17,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2021-12-21 12:53:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:17,780 INFO L225 Difference]: With dead ends: 1342 [2021-12-21 12:53:17,780 INFO L226 Difference]: Without dead ends: 752 [2021-12-21 12:53:17,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:17,783 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 932 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:17,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 2504 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:17,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-12-21 12:53:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2021-12-21 12:53:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 606 states have (on average 1.66996699669967) internal successors, (1012), 626 states have internal predecessors, (1012), 110 states have call successors, (110), 33 states have call predecessors, (110), 35 states have return successors, (112), 105 states have call predecessors, (112), 107 states have call successors, (112) [2021-12-21 12:53:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1234 transitions. [2021-12-21 12:53:17,801 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1234 transitions. Word has length 144 [2021-12-21 12:53:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:17,802 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 1234 transitions. [2021-12-21 12:53:17,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1234 transitions. [2021-12-21 12:53:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 12:53:17,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:17,805 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:17,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:18,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-21 12:53:18,024 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:18,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:18,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1240761347, now seen corresponding path program 1 times [2021-12-21 12:53:18,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:18,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833235555] [2021-12-21 12:53:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:18,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 12:53:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 12:53:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 12:53:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 12:53:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:53:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 12:53:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,140 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 12:53:18,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:18,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833235555] [2021-12-21 12:53:18,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833235555] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:18,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661964312] [2021-12-21 12:53:18,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:18,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:18,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:18,156 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:18,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-21 12:53:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:18,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 12:53:18,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:18,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661964312] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:18,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:18,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:18,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509790021] [2021-12-21 12:53:18,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:18,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:18,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:18,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:18,626 INFO L87 Difference]: Start difference. First operand 752 states and 1234 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:18,969 INFO L93 Difference]: Finished difference Result 1358 states and 2253 transitions. [2021-12-21 12:53:18,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:18,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2021-12-21 12:53:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:18,973 INFO L225 Difference]: With dead ends: 1358 [2021-12-21 12:53:18,973 INFO L226 Difference]: Without dead ends: 760 [2021-12-21 12:53:18,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:18,976 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 942 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:18,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 2504 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-12-21 12:53:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 760. [2021-12-21 12:53:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 613 states have (on average 1.67047308319739) internal successors, (1024), 633 states have internal predecessors, (1024), 110 states have call successors, (110), 34 states have call predecessors, (110), 36 states have return successors, (113), 105 states have call predecessors, (113), 107 states have call successors, (113) [2021-12-21 12:53:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1247 transitions. [2021-12-21 12:53:18,991 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1247 transitions. Word has length 146 [2021-12-21 12:53:18,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:18,991 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 1247 transitions. [2021-12-21 12:53:18,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1247 transitions. [2021-12-21 12:53:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-21 12:53:18,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:18,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:19,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-21 12:53:19,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 12:53:19,207 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -592662705, now seen corresponding path program 1 times [2021-12-21 12:53:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624785292] [2021-12-21 12:53:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:19,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:19,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 12:53:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 12:53:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:53:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 12:53:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:53:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 12:53:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 12:53:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-21 12:53:19,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624785292] [2021-12-21 12:53:19,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624785292] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97399934] [2021-12-21 12:53:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:19,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:19,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:19,349 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:19,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 12:53:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:19,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 12:53:19,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:19,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97399934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:19,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:19,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:19,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322290242] [2021-12-21 12:53:19,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:19,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:19,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:19,744 INFO L87 Difference]: Start difference. First operand 760 states and 1247 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:20,078 INFO L93 Difference]: Finished difference Result 1374 states and 2276 transitions. [2021-12-21 12:53:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:20,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2021-12-21 12:53:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:20,083 INFO L225 Difference]: With dead ends: 1374 [2021-12-21 12:53:20,083 INFO L226 Difference]: Without dead ends: 768 [2021-12-21 12:53:20,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:20,087 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 921 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:20,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 2504 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-12-21 12:53:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2021-12-21 12:53:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 620 states have (on average 1.6709677419354838) internal successors, (1036), 640 states have internal predecessors, (1036), 110 states have call successors, (110), 35 states have call predecessors, (110), 37 states have return successors, (114), 105 states have call predecessors, (114), 107 states have call successors, (114) [2021-12-21 12:53:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1260 transitions. [2021-12-21 12:53:20,117 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1260 transitions. Word has length 148 [2021-12-21 12:53:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:20,117 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 1260 transitions. [2021-12-21 12:53:20,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1260 transitions. [2021-12-21 12:53:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-21 12:53:20,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:20,151 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:20,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:20,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:20,369 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1716216453, now seen corresponding path program 1 times [2021-12-21 12:53:20,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:20,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456829049] [2021-12-21 12:53:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:20,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:53:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 12:53:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 12:53:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:53:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 12:53:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:53:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 12:53:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 12:53:20,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456829049] [2021-12-21 12:53:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456829049] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40023163] [2021-12-21 12:53:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:20,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:20,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:20,516 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:20,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-21 12:53:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:20,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 12:53:20,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:20,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40023163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:20,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:20,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:20,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618814717] [2021-12-21 12:53:20,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:20,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:20,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:20,897 INFO L87 Difference]: Start difference. First operand 768 states and 1260 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:21,230 INFO L93 Difference]: Finished difference Result 1390 states and 2299 transitions. [2021-12-21 12:53:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:21,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2021-12-21 12:53:21,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:21,234 INFO L225 Difference]: With dead ends: 1390 [2021-12-21 12:53:21,234 INFO L226 Difference]: Without dead ends: 776 [2021-12-21 12:53:21,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:21,238 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 938 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:21,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 2504 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-12-21 12:53:21,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-12-21 12:53:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 627 states have (on average 1.671451355661882) internal successors, (1048), 647 states have internal predecessors, (1048), 110 states have call successors, (110), 36 states have call predecessors, (110), 38 states have return successors, (115), 105 states have call predecessors, (115), 107 states have call successors, (115) [2021-12-21 12:53:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1273 transitions. [2021-12-21 12:53:21,269 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1273 transitions. Word has length 150 [2021-12-21 12:53:21,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:21,269 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1273 transitions. [2021-12-21 12:53:21,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:21,279 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1273 transitions. [2021-12-21 12:53:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-21 12:53:21,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:21,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:21,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:21,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:21,495 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:21,496 INFO L85 PathProgramCache]: Analyzing trace with hash 921837519, now seen corresponding path program 1 times [2021-12-21 12:53:21,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:21,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326439714] [2021-12-21 12:53:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:21,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:53:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:53:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 12:53:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 12:53:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-21 12:53:21,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:21,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326439714] [2021-12-21 12:53:21,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326439714] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:21,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146819857] [2021-12-21 12:53:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:21,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:21,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:21,644 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:21,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-21 12:53:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:53:21,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 12:53:22,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:22,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146819857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:22,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:22,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-21 12:53:22,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44927856] [2021-12-21 12:53:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:22,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:22,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:22,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:22,060 INFO L87 Difference]: Start difference. First operand 776 states and 1273 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:22,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:22,100 INFO L93 Difference]: Finished difference Result 1529 states and 2520 transitions. [2021-12-21 12:53:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:22,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2021-12-21 12:53:22,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:22,104 INFO L225 Difference]: With dead ends: 1529 [2021-12-21 12:53:22,104 INFO L226 Difference]: Without dead ends: 741 [2021-12-21 12:53:22,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:53:22,107 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 13 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:22,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2946 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:22,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2021-12-21 12:53:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2021-12-21 12:53:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 595 states have (on average 1.6504201680672268) internal successors, (982), 613 states have internal predecessors, (982), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2021-12-21 12:53:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1203 transitions. [2021-12-21 12:53:22,125 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1203 transitions. Word has length 152 [2021-12-21 12:53:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:22,125 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1203 transitions. [2021-12-21 12:53:22,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1203 transitions. [2021-12-21 12:53:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-21 12:53:22,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:22,128 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:22,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:22,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:22,346 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:22,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:22,346 INFO L85 PathProgramCache]: Analyzing trace with hash -240631996, now seen corresponding path program 1 times [2021-12-21 12:53:22,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:22,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191172232] [2021-12-21 12:53:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:22,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 12:53:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:53:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:53:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:53:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 12:53:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 12:53:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 12:53:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 12:53:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-21 12:53:22,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:22,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191172232] [2021-12-21 12:53:22,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191172232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:22,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667696548] [2021-12-21 12:53:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:22,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:22,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:22,491 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:22,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-21 12:53:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 12:53:22,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 12:53:22,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:22,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667696548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:22,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:22,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2021-12-21 12:53:22,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495571892] [2021-12-21 12:53:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:22,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:22,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:22,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:22,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:53:22,927 INFO L87 Difference]: Start difference. First operand 741 states and 1203 transitions. Second operand has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:22,989 INFO L93 Difference]: Finished difference Result 1479 states and 2400 transitions. [2021-12-21 12:53:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2021-12-21 12:53:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:22,992 INFO L225 Difference]: With dead ends: 1479 [2021-12-21 12:53:22,992 INFO L226 Difference]: Without dead ends: 755 [2021-12-21 12:53:22,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:53:22,994 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 138 mSDsluCounter, 4807 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5802 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:22,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 5802 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:22,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-12-21 12:53:23,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 734. [2021-12-21 12:53:23,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 588 states have (on average 1.6428571428571428) internal successors, (966), 606 states have internal predecessors, (966), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2021-12-21 12:53:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1187 transitions. [2021-12-21 12:53:23,008 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1187 transitions. Word has length 153 [2021-12-21 12:53:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:23,008 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1187 transitions. [2021-12-21 12:53:23,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-21 12:53:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1187 transitions. [2021-12-21 12:53:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-21 12:53:23,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:23,011 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:23,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:23,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:23,228 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:23,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1193178707, now seen corresponding path program 1 times [2021-12-21 12:53:23,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:23,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138280972] [2021-12-21 12:53:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:23,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:53:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:53:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 12:53:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 12:53:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 12:53:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:53:23,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:23,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138280972] [2021-12-21 12:53:23,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138280972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:23,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:23,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:23,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262361102] [2021-12-21 12:53:23,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:23,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:23,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:23,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:23,359 INFO L87 Difference]: Start difference. First operand 734 states and 1187 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:26,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:26,149 INFO L93 Difference]: Finished difference Result 1660 states and 2706 transitions. [2021-12-21 12:53:26,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 12:53:26,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2021-12-21 12:53:26,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:26,154 INFO L225 Difference]: With dead ends: 1660 [2021-12-21 12:53:26,154 INFO L226 Difference]: Without dead ends: 1028 [2021-12-21 12:53:26,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:26,157 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 1598 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:26,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 2080 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 12:53:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-12-21 12:53:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 742. [2021-12-21 12:53:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 596 states have (on average 1.639261744966443) internal successors, (977), 614 states have internal predecessors, (977), 109 states have call successors, (109), 36 states have call predecessors, (109), 36 states have return successors, (112), 104 states have call predecessors, (112), 106 states have call successors, (112) [2021-12-21 12:53:26,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1198 transitions. [2021-12-21 12:53:26,197 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1198 transitions. Word has length 154 [2021-12-21 12:53:26,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:26,197 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 1198 transitions. [2021-12-21 12:53:26,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:26,197 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1198 transitions. [2021-12-21 12:53:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-21 12:53:26,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:26,200 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:26,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 12:53:26,201 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:26,201 INFO L85 PathProgramCache]: Analyzing trace with hash 578144977, now seen corresponding path program 1 times [2021-12-21 12:53:26,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:26,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843765823] [2021-12-21 12:53:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:26,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:53:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:53:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 12:53:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 12:53:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 12:53:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-21 12:53:26,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:26,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843765823] [2021-12-21 12:53:26,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843765823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:26,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:26,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:26,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864322801] [2021-12-21 12:53:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:26,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:26,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:26,327 INFO L87 Difference]: Start difference. First operand 742 states and 1198 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:29,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:29,138 INFO L93 Difference]: Finished difference Result 1696 states and 2763 transitions. [2021-12-21 12:53:29,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:53:29,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 154 [2021-12-21 12:53:29,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:29,142 INFO L225 Difference]: With dead ends: 1696 [2021-12-21 12:53:29,142 INFO L226 Difference]: Without dead ends: 962 [2021-12-21 12:53:29,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:29,145 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 1524 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:29,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 2060 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 12:53:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-12-21 12:53:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 714. [2021-12-21 12:53:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 571 states have (on average 1.6304728546409808) internal successors, (931), 587 states have internal predecessors, (931), 108 states have call successors, (108), 36 states have call predecessors, (108), 34 states have return successors, (109), 103 states have call predecessors, (109), 105 states have call successors, (109) [2021-12-21 12:53:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1148 transitions. [2021-12-21 12:53:29,182 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1148 transitions. Word has length 154 [2021-12-21 12:53:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:29,183 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1148 transitions. [2021-12-21 12:53:29,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1148 transitions. [2021-12-21 12:53:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 12:53:29,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:29,186 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:29,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 12:53:29,186 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:29,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash -141981344, now seen corresponding path program 1 times [2021-12-21 12:53:29,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:29,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868269672] [2021-12-21 12:53:29,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:29,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:53:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 12:53:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 12:53:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:53:29,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:29,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868269672] [2021-12-21 12:53:29,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868269672] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:29,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416164473] [2021-12-21 12:53:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:29,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:29,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:29,406 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:29,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-21 12:53:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:29,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 12:53:29,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:29,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416164473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:29,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:29,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 13 [2021-12-21 12:53:29,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452327064] [2021-12-21 12:53:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:29,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:53:29,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:53:29,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:29,855 INFO L87 Difference]: Start difference. First operand 714 states and 1148 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:29,978 INFO L93 Difference]: Finished difference Result 1603 states and 2593 transitions. [2021-12-21 12:53:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:53:29,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-12-21 12:53:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:29,982 INFO L225 Difference]: With dead ends: 1603 [2021-12-21 12:53:29,982 INFO L226 Difference]: Without dead ends: 977 [2021-12-21 12:53:29,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:29,984 INFO L933 BasicCegarLoop]: 1219 mSDtfsCounter, 681 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:29,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 1803 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2021-12-21 12:53:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 973. [2021-12-21 12:53:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 784 states have (on average 1.6160714285714286) internal successors, (1267), 798 states have internal predecessors, (1267), 138 states have call successors, (138), 53 states have call predecessors, (138), 50 states have return successors, (151), 133 states have call predecessors, (151), 134 states have call successors, (151) [2021-12-21 12:53:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1556 transitions. [2021-12-21 12:53:30,040 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1556 transitions. Word has length 155 [2021-12-21 12:53:30,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:30,040 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1556 transitions. [2021-12-21 12:53:30,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:30,040 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1556 transitions. [2021-12-21 12:53:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 12:53:30,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:30,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:30,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:30,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:30,260 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:30,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:30,260 INFO L85 PathProgramCache]: Analyzing trace with hash -87588446, now seen corresponding path program 1 times [2021-12-21 12:53:30,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:30,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141124087] [2021-12-21 12:53:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:30,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:53:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 12:53:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 12:53:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:53:30,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:30,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141124087] [2021-12-21 12:53:30,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141124087] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:30,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268199409] [2021-12-21 12:53:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:30,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:30,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:30,504 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:30,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-21 12:53:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 12:53:30,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:53:30,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:30,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268199409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:30,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:30,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 12:53:30,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561035376] [2021-12-21 12:53:30,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:30,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:30,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:30,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:30,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:30,939 INFO L87 Difference]: Start difference. First operand 973 states and 1556 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:31,315 INFO L93 Difference]: Finished difference Result 2747 states and 4480 transitions. [2021-12-21 12:53:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:31,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2021-12-21 12:53:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:31,323 INFO L225 Difference]: With dead ends: 2747 [2021-12-21 12:53:31,323 INFO L226 Difference]: Without dead ends: 1863 [2021-12-21 12:53:31,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:53:31,327 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 914 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4271 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:31,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 4271 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 12:53:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-12-21 12:53:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1853. [2021-12-21 12:53:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1490 states have (on average 1.6248322147651006) internal successors, (2421), 1518 states have internal predecessors, (2421), 265 states have call successors, (265), 100 states have call predecessors, (265), 97 states have return successors, (318), 258 states have call predecessors, (318), 259 states have call successors, (318) [2021-12-21 12:53:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 3004 transitions. [2021-12-21 12:53:31,457 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 3004 transitions. Word has length 155 [2021-12-21 12:53:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:31,458 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 3004 transitions. [2021-12-21 12:53:31,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 12:53:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 3004 transitions. [2021-12-21 12:53:31,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 12:53:31,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:31,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:31,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:31,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-21 12:53:31,675 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1778165062, now seen corresponding path program 1 times [2021-12-21 12:53:31,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:31,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317664385] [2021-12-21 12:53:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:31,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 12:53:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 12:53:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:53:31,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:31,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317664385] [2021-12-21 12:53:31,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317664385] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278118943] [2021-12-21 12:53:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:31,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:31,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:31,907 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:31,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-21 12:53:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 12:53:32,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:53:32,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:32,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278118943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:32,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:32,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-21 12:53:32,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111115069] [2021-12-21 12:53:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:32,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:53:32,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:53:32,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:32,279 INFO L87 Difference]: Start difference. First operand 1853 states and 3004 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:32,420 INFO L93 Difference]: Finished difference Result 4491 states and 7364 transitions. [2021-12-21 12:53:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:53:32,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-21 12:53:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:32,431 INFO L225 Difference]: With dead ends: 4491 [2021-12-21 12:53:32,431 INFO L226 Difference]: Without dead ends: 2729 [2021-12-21 12:53:32,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:32,437 INFO L933 BasicCegarLoop]: 1821 mSDtfsCounter, 967 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2816 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:32,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 2816 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-12-21 12:53:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1853. [2021-12-21 12:53:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1490 states have (on average 1.6241610738255035) internal successors, (2420), 1518 states have internal predecessors, (2420), 265 states have call successors, (265), 100 states have call predecessors, (265), 97 states have return successors, (318), 258 states have call predecessors, (318), 259 states have call successors, (318) [2021-12-21 12:53:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 3003 transitions. [2021-12-21 12:53:32,574 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 3003 transitions. Word has length 160 [2021-12-21 12:53:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:32,576 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 3003 transitions. [2021-12-21 12:53:32,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 3003 transitions. [2021-12-21 12:53:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 12:53:32,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:32,579 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:32,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:32,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-21 12:53:32,798 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:32,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1503405448, now seen corresponding path program 1 times [2021-12-21 12:53:32,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:32,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562066636] [2021-12-21 12:53:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:32,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 12:53:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 12:53:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:53:33,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:33,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562066636] [2021-12-21 12:53:33,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562066636] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:33,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90492919] [2021-12-21 12:53:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:33,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:33,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:33,013 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:33,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-21 12:53:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:33,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 12:53:33,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:53:33,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:33,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90492919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:33,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:33,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-21 12:53:33,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367621304] [2021-12-21 12:53:33,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:33,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:33,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:33,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:33,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:53:33,444 INFO L87 Difference]: Start difference. First operand 1853 states and 3003 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:33,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:33,827 INFO L93 Difference]: Finished difference Result 2737 states and 4497 transitions. [2021-12-21 12:53:33,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:33,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-21 12:53:33,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:33,835 INFO L225 Difference]: With dead ends: 2737 [2021-12-21 12:53:33,835 INFO L226 Difference]: Without dead ends: 2734 [2021-12-21 12:53:33,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:53:33,837 INFO L933 BasicCegarLoop]: 1873 mSDtfsCounter, 943 mSDsluCounter, 5491 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 7364 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:33,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 7364 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 12:53:33,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-12-21 12:53:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 2720. [2021-12-21 12:53:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2188 states have (on average 1.6288848263254114) internal successors, (3564), 2226 states have internal predecessors, (3564), 390 states have call successors, (390), 146 states have call predecessors, (390), 141 states have return successors, (486), 383 states have call predecessors, (486), 382 states have call successors, (486) [2021-12-21 12:53:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4440 transitions. [2021-12-21 12:53:34,008 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4440 transitions. Word has length 160 [2021-12-21 12:53:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:34,008 INFO L470 AbstractCegarLoop]: Abstraction has 2720 states and 4440 transitions. [2021-12-21 12:53:34,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4440 transitions. [2021-12-21 12:53:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 12:53:34,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:34,011 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:34,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:34,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-21 12:53:34,230 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1850551620, now seen corresponding path program 1 times [2021-12-21 12:53:34,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:34,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859431421] [2021-12-21 12:53:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:34,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 12:53:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 12:53:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:53:34,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:34,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859431421] [2021-12-21 12:53:34,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859431421] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:34,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349341034] [2021-12-21 12:53:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:34,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:34,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:34,428 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:34,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-21 12:53:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:53:34,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 12:53:34,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:34,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349341034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:34,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:34,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-21 12:53:34,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229753313] [2021-12-21 12:53:34,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:34,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:34,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:34,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:34,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:34,769 INFO L87 Difference]: Start difference. First operand 2720 states and 4440 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:34,963 INFO L93 Difference]: Finished difference Result 5388 states and 8915 transitions. [2021-12-21 12:53:34,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:34,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-21 12:53:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:34,971 INFO L225 Difference]: With dead ends: 5388 [2021-12-21 12:53:34,971 INFO L226 Difference]: Without dead ends: 2756 [2021-12-21 12:53:34,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:34,978 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 86 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2878 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:34,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 2878 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-12-21 12:53:35,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2756. [2021-12-21 12:53:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2218 states have (on average 1.6230838593327321) internal successors, (3600), 2256 states have internal predecessors, (3600), 390 states have call successors, (390), 152 states have call predecessors, (390), 147 states have return successors, (486), 383 states have call predecessors, (486), 382 states have call successors, (486) [2021-12-21 12:53:35,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 4476 transitions. [2021-12-21 12:53:35,124 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 4476 transitions. Word has length 160 [2021-12-21 12:53:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:35,124 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 4476 transitions. [2021-12-21 12:53:35,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 4476 transitions. [2021-12-21 12:53:35,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-21 12:53:35,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:35,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:35,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:35,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-21 12:53:35,341 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash -504831259, now seen corresponding path program 1 times [2021-12-21 12:53:35,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:35,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632855979] [2021-12-21 12:53:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:35,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 12:53:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 12:53:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:53:35,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:35,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632855979] [2021-12-21 12:53:35,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632855979] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:35,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191671227] [2021-12-21 12:53:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:35,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:35,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:35,516 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:35,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-21 12:53:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:35,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:35,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 12:53:36,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:36,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191671227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:36,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:36,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:53:36,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311388646] [2021-12-21 12:53:36,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:36,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:36,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:36,015 INFO L87 Difference]: Start difference. First operand 2756 states and 4476 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:53:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:39,625 INFO L93 Difference]: Finished difference Result 9181 states and 15227 transitions. [2021-12-21 12:53:39,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:53:39,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2021-12-21 12:53:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:39,656 INFO L225 Difference]: With dead ends: 9181 [2021-12-21 12:53:39,657 INFO L226 Difference]: Without dead ends: 6512 [2021-12-21 12:53:39,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-21 12:53:39,671 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 3424 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 1092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3543 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 6354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1092 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:39,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3543 Valid, 2638 Invalid, 6354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1092 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-21 12:53:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2021-12-21 12:53:40,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 6168. [2021-12-21 12:53:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6168 states, 4952 states have (on average 1.6181340872374799) internal successors, (8013), 5039 states have internal predecessors, (8013), 870 states have call successors, (870), 358 states have call predecessors, (870), 345 states have return successors, (1181), 854 states have call predecessors, (1181), 855 states have call successors, (1181) [2021-12-21 12:53:40,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 10064 transitions. [2021-12-21 12:53:40,120 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 10064 transitions. Word has length 162 [2021-12-21 12:53:40,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:40,121 INFO L470 AbstractCegarLoop]: Abstraction has 6168 states and 10064 transitions. [2021-12-21 12:53:40,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:53:40,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 10064 transitions. [2021-12-21 12:53:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 12:53:40,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:40,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:40,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:40,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:40,343 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:40,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:40,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1567845281, now seen corresponding path program 1 times [2021-12-21 12:53:40,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:40,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217536945] [2021-12-21 12:53:40,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:40,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:40,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 12:53:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 12:53:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 12:53:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:53:40,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:40,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217536945] [2021-12-21 12:53:40,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217536945] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:40,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496944342] [2021-12-21 12:53:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:40,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:40,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:40,572 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:40,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-21 12:53:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:40,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 12:53:41,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:41,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496944342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:41,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:41,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2021-12-21 12:53:41,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278079120] [2021-12-21 12:53:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:41,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:41,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:53:41,124 INFO L87 Difference]: Start difference. First operand 6168 states and 10064 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-21 12:53:42,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:42,069 INFO L93 Difference]: Finished difference Result 14299 states and 23661 transitions. [2021-12-21 12:53:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:42,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 163 [2021-12-21 12:53:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:42,098 INFO L225 Difference]: With dead ends: 14299 [2021-12-21 12:53:42,098 INFO L226 Difference]: Without dead ends: 8204 [2021-12-21 12:53:42,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-21 12:53:42,122 INFO L933 BasicCegarLoop]: 1435 mSDtfsCounter, 1749 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 6166 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:42,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 6166 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 12:53:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2021-12-21 12:53:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 8185. [2021-12-21 12:53:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8185 states, 6691 states have (on average 1.6133612315050068) internal successors, (10795), 6776 states have internal predecessors, (10795), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2021-12-21 12:53:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8185 states to 8185 states and 13550 transitions. [2021-12-21 12:53:42,647 INFO L78 Accepts]: Start accepts. Automaton has 8185 states and 13550 transitions. Word has length 163 [2021-12-21 12:53:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:42,648 INFO L470 AbstractCegarLoop]: Abstraction has 8185 states and 13550 transitions. [2021-12-21 12:53:42,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-21 12:53:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 8185 states and 13550 transitions. [2021-12-21 12:53:42,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-21 12:53:42,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:42,651 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:42,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-21 12:53:42,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:42,869 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1661489590, now seen corresponding path program 1 times [2021-12-21 12:53:42,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:42,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995001032] [2021-12-21 12:53:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:42,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 12:53:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 12:53:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 12:53:43,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995001032] [2021-12-21 12:53:43,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995001032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149257325] [2021-12-21 12:53:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:43,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:43,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:43,128 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:43,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-21 12:53:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:43,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:43,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:53:43,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:43,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149257325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:43,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:43,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:53:43,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875981361] [2021-12-21 12:53:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:43,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:43,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:43,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:43,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:43,617 INFO L87 Difference]: Start difference. First operand 8185 states and 13550 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:53:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:47,095 INFO L93 Difference]: Finished difference Result 15687 states and 25936 transitions. [2021-12-21 12:53:47,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:53:47,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 166 [2021-12-21 12:53:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:47,151 INFO L225 Difference]: With dead ends: 15687 [2021-12-21 12:53:47,167 INFO L226 Difference]: Without dead ends: 8716 [2021-12-21 12:53:47,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-21 12:53:47,231 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 3242 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 4625 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 5549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 4625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:47,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3361 Valid, 2537 Invalid, 5549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 4625 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 12:53:47,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8716 states. [2021-12-21 12:53:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8716 to 8179. [2021-12-21 12:53:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8179 states, 6685 states have (on average 1.612116679132386) internal successors, (10777), 6770 states have internal predecessors, (10777), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2021-12-21 12:53:47,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 13532 transitions. [2021-12-21 12:53:47,777 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 13532 transitions. Word has length 166 [2021-12-21 12:53:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:47,778 INFO L470 AbstractCegarLoop]: Abstraction has 8179 states and 13532 transitions. [2021-12-21 12:53:47,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 4 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:53:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 13532 transitions. [2021-12-21 12:53:47,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-21 12:53:47,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:47,781 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:47,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:47,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-21 12:53:47,995 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1177524320, now seen corresponding path program 1 times [2021-12-21 12:53:47,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:47,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090355918] [2021-12-21 12:53:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:47,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:53:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 12:53:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 12:53:48,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:48,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090355918] [2021-12-21 12:53:48,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090355918] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:48,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800638493] [2021-12-21 12:53:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:48,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:48,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:48,207 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:48,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-21 12:53:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:48,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:53:48,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-21 12:53:48,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:48,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800638493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:48,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:48,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-21 12:53:48,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614944656] [2021-12-21 12:53:48,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:48,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:48,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:48,615 INFO L87 Difference]: Start difference. First operand 8179 states and 13532 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:49,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:49,210 INFO L93 Difference]: Finished difference Result 16334 states and 27712 transitions. [2021-12-21 12:53:49,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 168 [2021-12-21 12:53:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:49,246 INFO L225 Difference]: With dead ends: 16334 [2021-12-21 12:53:49,247 INFO L226 Difference]: Without dead ends: 8156 [2021-12-21 12:53:49,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:49,288 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 93 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:49,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2872 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:49,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2021-12-21 12:53:49,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 8156. [2021-12-21 12:53:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 6662 states have (on average 1.6038727108976283) internal successors, (10685), 6747 states have internal predecessors, (10685), 1007 states have call successors, (1007), 506 states have call predecessors, (1007), 486 states have return successors, (1748), 986 states have call predecessors, (1748), 982 states have call successors, (1748) [2021-12-21 12:53:49,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 13440 transitions. [2021-12-21 12:53:49,837 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 13440 transitions. Word has length 168 [2021-12-21 12:53:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:49,837 INFO L470 AbstractCegarLoop]: Abstraction has 8156 states and 13440 transitions. [2021-12-21 12:53:49,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:53:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 13440 transitions. [2021-12-21 12:53:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-21 12:53:49,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:49,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:49,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:50,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:50,058 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:50,058 INFO L85 PathProgramCache]: Analyzing trace with hash -282489270, now seen corresponding path program 1 times [2021-12-21 12:53:50,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:50,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459637687] [2021-12-21 12:53:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:50,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:53:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-21 12:53:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:53:50,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:50,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459637687] [2021-12-21 12:53:50,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459637687] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:50,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705872980] [2021-12-21 12:53:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:50,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:50,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:50,270 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:50,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-21 12:53:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:50,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:50,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:53:50,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:50,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705872980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:50,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:50,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:53:50,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993011229] [2021-12-21 12:53:50,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:50,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:50,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:50,742 INFO L87 Difference]: Start difference. First operand 8156 states and 13440 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:53:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:55,023 INFO L93 Difference]: Finished difference Result 25054 states and 43573 transitions. [2021-12-21 12:53:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:53:55,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 169 [2021-12-21 12:53:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:55,082 INFO L225 Difference]: With dead ends: 25054 [2021-12-21 12:53:55,083 INFO L226 Difference]: Without dead ends: 16984 [2021-12-21 12:53:55,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-12-21 12:53:55,135 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 6042 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 1787 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6155 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 5125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1787 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:55,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6155 Valid, 1812 Invalid, 5125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1787 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 12:53:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16984 states. [2021-12-21 12:53:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16984 to 14336. [2021-12-21 12:53:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14336 states, 11678 states have (on average 1.5767254666895016) internal successors, (18413), 11838 states have internal predecessors, (18413), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 884 states have return successors, (3009), 1748 states have call predecessors, (3009), 1744 states have call successors, (3009) [2021-12-21 12:53:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14336 states to 14336 states and 23195 transitions. [2021-12-21 12:53:56,618 INFO L78 Accepts]: Start accepts. Automaton has 14336 states and 23195 transitions. Word has length 169 [2021-12-21 12:53:56,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:56,618 INFO L470 AbstractCegarLoop]: Abstraction has 14336 states and 23195 transitions. [2021-12-21 12:53:56,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:53:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 14336 states and 23195 transitions. [2021-12-21 12:53:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-21 12:53:56,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:56,621 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:53:56,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:56,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:56,839 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:56,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:56,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1790758563, now seen corresponding path program 1 times [2021-12-21 12:53:56,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:56,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638254032] [2021-12-21 12:53:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:56,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:53:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 12:53:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:53:57,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:57,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638254032] [2021-12-21 12:53:57,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638254032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:57,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444746971] [2021-12-21 12:53:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:57,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:57,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:57,036 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:53:57,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-21 12:53:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:57,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:57,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:53:57,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:57,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444746971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:57,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:57,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:53:57,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655619180] [2021-12-21 12:53:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:57,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:57,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:57,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:57,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:57,520 INFO L87 Difference]: Start difference. First operand 14336 states and 23195 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:54:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:01,061 INFO L93 Difference]: Finished difference Result 28247 states and 45915 transitions. [2021-12-21 12:54:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:54:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 170 [2021-12-21 12:54:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:01,114 INFO L225 Difference]: With dead ends: 28247 [2021-12-21 12:54:01,115 INFO L226 Difference]: Without dead ends: 15201 [2021-12-21 12:54:01,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-21 12:54:01,184 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 3015 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 5365 mSolverCounterSat, 934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 6299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 934 IncrementalHoareTripleChecker+Valid, 5365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:01,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 3078 Invalid, 6299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [934 Valid, 5365 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:54:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15201 states. [2021-12-21 12:54:02,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15201 to 14318. [2021-12-21 12:54:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14318 states, 11660 states have (on average 1.5745283018867924) internal successors, (18359), 11820 states have internal predecessors, (18359), 1773 states have call successors, (1773), 905 states have call predecessors, (1773), 884 states have return successors, (3009), 1748 states have call predecessors, (3009), 1744 states have call successors, (3009) [2021-12-21 12:54:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14318 states to 14318 states and 23141 transitions. [2021-12-21 12:54:02,308 INFO L78 Accepts]: Start accepts. Automaton has 14318 states and 23141 transitions. Word has length 170 [2021-12-21 12:54:02,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:02,309 INFO L470 AbstractCegarLoop]: Abstraction has 14318 states and 23141 transitions. [2021-12-21 12:54:02,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 4 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-21 12:54:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 14318 states and 23141 transitions. [2021-12-21 12:54:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-21 12:54:02,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:02,311 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:54:02,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-21 12:54:02,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-21 12:54:02,527 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1698284167, now seen corresponding path program 1 times [2021-12-21 12:54:02,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:02,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440113379] [2021-12-21 12:54:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:02,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:54:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:54:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:54:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:54:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:54:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:54:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:54:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:54:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:54:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:54:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:54:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 12:54:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,735 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:54:02,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:02,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440113379] [2021-12-21 12:54:02,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440113379] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:02,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869860618] [2021-12-21 12:54:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:02,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:02,736 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:54:02,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-21 12:54:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:02,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:54:02,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 12:54:03,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:03,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869860618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:03,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:03,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 12:54:03,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018752520] [2021-12-21 12:54:03,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:03,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:03,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:03,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:03,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:54:03,184 INFO L87 Difference]: Start difference. First operand 14318 states and 23141 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 12:54:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:04,283 INFO L93 Difference]: Finished difference Result 28848 states and 47736 transitions. [2021-12-21 12:54:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:04,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 172 [2021-12-21 12:54:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:04,335 INFO L225 Difference]: With dead ends: 28848 [2021-12-21 12:54:04,335 INFO L226 Difference]: Without dead ends: 14623 [2021-12-21 12:54:04,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:54:04,406 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 3 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3999 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:04,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3999 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:54:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14623 states.