./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product31.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_product31.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 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:53:06,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:53:06,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:53:06,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:53:06,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:53:06,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:53:06,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:53:06,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:53:06,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:53:06,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:53:06,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:53:06,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:53:06,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:53:06,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:53:06,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:53:06,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:53:06,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:53:06,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:53:06,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:53:06,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:53:06,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:53:06,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:53:06,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:53:06,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:53:06,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:53:06,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:53:06,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:53:06,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:53:06,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:53:06,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:53:06,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:53:06,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:53:06,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:53:06,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:53:06,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:53:06,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:53:06,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:53:06,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:53:06,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:53:06,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:53:06,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:53:06,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:53:06,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:53:06,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:53:06,845 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:53:06,845 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:53:06,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:53:06,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:53:06,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:53:06,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:53:06,847 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:53:06,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:53:06,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:53:06,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:53:06,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:53:06,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:53:06,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:53:06,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:53:06,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:53:06,849 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:53:06,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:53:06,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:53:06,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:53:06,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:53:06,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:53:06,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:53:06,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:53:06,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:53:06,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:53:06,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:53:06,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:53:06,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:53:06,852 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:53:06,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:53:06,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:53:06,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:53:06,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e77838346608929bef5ad1e655ea0710d74ebb9f10b29169ab985d305812d92 [2021-12-21 12:53:07,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:53:07,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:53:07,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:53:07,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:53:07,040 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:53:07,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2021-12-21 12:53:07,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60050dd4/a79554ae12fa4df1b00ca9bf782a693f/FLAG0d7f0dd88 [2021-12-21 12:53:07,554 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:53:07,558 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2021-12-21 12:53:07,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60050dd4/a79554ae12fa4df1b00ca9bf782a693f/FLAG0d7f0dd88 [2021-12-21 12:53:07,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d60050dd4/a79554ae12fa4df1b00ca9bf782a693f [2021-12-21 12:53:07,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:53:07,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:53:07,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:53:07,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:53:07,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:53:07,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:53:07" (1/1) ... [2021-12-21 12:53:07,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@353a28c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:07, skipping insertion in model container [2021-12-21 12:53:07,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:53:07" (1/1) ... [2021-12-21 12:53:07,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:53:07,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:53:07,791 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_product31.cil.c[1546,1559] [2021-12-21 12:53:08,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:53:08,011 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:53:08,023 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_product31.cil.c[1546,1559] [2021-12-21 12:53:08,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:53:08,105 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:53:08,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08 WrapperNode [2021-12-21 12:53:08,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:53:08,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:53:08,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:53:08,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:53:08,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,207 INFO L137 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 917 [2021-12-21 12:53:08,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:53:08,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:53:08,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:53:08,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:53:08,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:53:08,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:53:08,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:53:08,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:53:08,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (1/1) ... [2021-12-21 12:53:08,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:53:08,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:08,327 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 12:53:08,336 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 12:53:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-12-21 12:53:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-12-21 12:53:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:53:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-21 12:53:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-12-21 12:53:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-21 12:53:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-21 12:53:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-21 12:53:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-21 12:53:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2021-12-21 12:53:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2021-12-21 12:53:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:53:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:53:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-21 12:53:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-21 12:53:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:53:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:53:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-21 12:53:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-21 12:53:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:53:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:53:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-12-21 12:53:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-12-21 12:53:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:53:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:53:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:53:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:53:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-21 12:53:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-21 12:53:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:53:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:53:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:53:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:53:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:53:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:53:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-21 12:53:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-21 12:53:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:53:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:53:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:53:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:53:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:53:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:53:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:53:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:53:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:53:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:53:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:53:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-21 12:53:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-21 12:53:08,363 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:53:08,363 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:53:08,364 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:53:08,364 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:53:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:53:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:53:08,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:53:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:53:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:53:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:53:08,517 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:53:08,519 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:53:09,289 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:53:09,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:53:09,304 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-21 12:53:09,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:53:09 BoogieIcfgContainer [2021-12-21 12:53:09,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:53:09,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:53:09,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:53:09,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:53:09,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:53:07" (1/3) ... [2021-12-21 12:53:09,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2353ef7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:53:09, skipping insertion in model container [2021-12-21 12:53:09,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:53:08" (2/3) ... [2021-12-21 12:53:09,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2353ef7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:53:09, skipping insertion in model container [2021-12-21 12:53:09,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:53:09" (3/3) ... [2021-12-21 12:53:09,312 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2021-12-21 12:53:09,316 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:53:09,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:53:09,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:53:09,358 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 12:53:09,358 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:53:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 629 states, 491 states have (on average 1.6761710794297353) internal successors, (823), 509 states have internal predecessors, (823), 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 12:53:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 12:53:09,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:09,415 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 12:53:09,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:09,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1476014081, now seen corresponding path program 1 times [2021-12-21 12:53:09,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:09,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721944328] [2021-12-21 12:53:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:09,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 12:53:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:53:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:53:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:53:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:53:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 12:53:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 12:53:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:53:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 12:53:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:09,899 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 12:53:09,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:09,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721944328] [2021-12-21 12:53:09,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721944328] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:09,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185447703] [2021-12-21 12:53:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:09,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:09,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:09,904 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 12:53:09,905 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 12:53:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:10,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:10,406 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 12:53:10,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:10,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185447703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:10,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:10,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-21 12:53:10,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317795417] [2021-12-21 12:53:10,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:10,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:10,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:10,434 INFO L87 Difference]: Start difference. First operand has 629 states, 491 states have (on average 1.6761710794297353) internal successors, (823), 509 states have internal predecessors, (823), 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 12:53:10,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:10,551 INFO L93 Difference]: Finished difference Result 1257 states and 2094 transitions. [2021-12-21 12:53:10,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:10,553 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 12:53:10,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:10,567 INFO L225 Difference]: With dead ends: 1257 [2021-12-21 12:53:10,571 INFO L226 Difference]: Without dead ends: 628 [2021-12-21 12:53:10,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:53:10,581 INFO L933 BasicCegarLoop]: 1012 mSDtfsCounter, 26 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3027 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 12:53:10,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 3027 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:10,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-12-21 12:53:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-12-21 12:53:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 492 states have (on average 1.660569105691057) internal successors, (817), 508 states have internal predecessors, (817), 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 12:53:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1030 transitions. [2021-12-21 12:53:10,641 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1030 transitions. Word has length 131 [2021-12-21 12:53:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:10,642 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1030 transitions. [2021-12-21 12:53:10,642 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 12:53:10,642 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1030 transitions. [2021-12-21 12:53:10,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 12:53:10,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:10,648 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 12:53:10,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:10,856 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 12:53:10,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:10,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1513645531, now seen corresponding path program 1 times [2021-12-21 12:53:10,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:10,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728440288] [2021-12-21 12:53:10,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:10,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:10,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 12:53:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:53:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:53:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:53:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:53:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-21 12:53:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 12:53:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 12:53:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,109 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 12:53:11,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:11,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728440288] [2021-12-21 12:53:11,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728440288] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:11,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333543733] [2021-12-21 12:53:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:11,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:11,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:11,111 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 12:53:11,112 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 12:53:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:11,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:11,522 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 12:53:11,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:11,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333543733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:11,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:11,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-21 12:53:11,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325483020] [2021-12-21 12:53:11,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:11,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:11,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:11,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:11,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:53:11,549 INFO L87 Difference]: Start difference. First operand 628 states and 1030 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 12:53:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:11,657 INFO L93 Difference]: Finished difference Result 1270 states and 2087 transitions. [2021-12-21 12:53:11,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:11,657 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 12:53:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:11,664 INFO L225 Difference]: With dead ends: 1270 [2021-12-21 12:53:11,664 INFO L226 Difference]: Without dead ends: 652 [2021-12-21 12:53:11,667 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 12:53:11,668 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 119 mSDsluCounter, 4943 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 5953 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:11,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 5953 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:11,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-21 12:53:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 641. [2021-12-21 12:53:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 502 states have (on average 1.657370517928287) internal successors, (832), 520 states have internal predecessors, (832), 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 12:53:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1052 transitions. [2021-12-21 12:53:11,711 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1052 transitions. Word has length 133 [2021-12-21 12:53:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:11,712 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1052 transitions. [2021-12-21 12:53:11,712 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 12:53:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1052 transitions. [2021-12-21 12:53:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 12:53:11,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:11,716 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 12:53:11,746 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 12:53:11,934 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 12:53:11,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash 961051164, now seen corresponding path program 1 times [2021-12-21 12:53:11,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416526970] [2021-12-21 12:53:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:11,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:11,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 12:53:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:53:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:53:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 12:53:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 12:53:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 12:53:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,156 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 12:53:12,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:12,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416526970] [2021-12-21 12:53:12,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416526970] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:12,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297822585] [2021-12-21 12:53:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:12,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:12,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:12,158 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 12:53:12,192 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 12:53:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:12,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:12,584 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 12:53:12,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:12,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297822585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:12,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:12,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-21 12:53:12,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470804032] [2021-12-21 12:53:12,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:12,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:12,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:12,586 INFO L87 Difference]: Start difference. First operand 641 states and 1052 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 12:53:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:12,672 INFO L93 Difference]: Finished difference Result 1290 states and 2120 transitions. [2021-12-21 12:53:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:12,673 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 12:53:12,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:12,676 INFO L225 Difference]: With dead ends: 1290 [2021-12-21 12:53:12,676 INFO L226 Difference]: Without dead ends: 661 [2021-12-21 12:53:12,679 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 12:53:12,680 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 130 mSDsluCounter, 4936 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 5947 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:12,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 5947 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-21 12:53:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 641. [2021-12-21 12:53:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 502 states have (on average 1.657370517928287) internal successors, (832), 520 states have internal predecessors, (832), 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 12:53:12,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1052 transitions. [2021-12-21 12:53:12,715 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1052 transitions. Word has length 134 [2021-12-21 12:53:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:12,715 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 1052 transitions. [2021-12-21 12:53:12,715 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 12:53:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1052 transitions. [2021-12-21 12:53:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 12:53:12,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:12,720 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 12:53:12,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:12,938 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 12:53:12,939 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash -182829480, now seen corresponding path program 1 times [2021-12-21 12:53:12,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:12,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128721298] [2021-12-21 12:53:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:12,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:53:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 12:53:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:53:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:53:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 12:53:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 12:53:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 12:53:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,087 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 12:53:13,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:13,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128721298] [2021-12-21 12:53:13,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128721298] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:13,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072414289] [2021-12-21 12:53:13,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:13,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:13,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:13,089 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 12:53:13,127 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 12:53:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:13,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:13,462 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 12:53:13,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:13,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072414289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:13,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:13,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-12-21 12:53:13,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718772805] [2021-12-21 12:53:13,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:13,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:13,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:13,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:13,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:53:13,464 INFO L87 Difference]: Start difference. First operand 641 states and 1052 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 12:53:13,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:13,554 INFO L93 Difference]: Finished difference Result 1285 states and 2110 transitions. [2021-12-21 12:53:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:13,554 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 12:53:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:13,558 INFO L225 Difference]: With dead ends: 1285 [2021-12-21 12:53:13,558 INFO L226 Difference]: Without dead ends: 652 [2021-12-21 12:53:13,561 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 12:53:13,561 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 20 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:13,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2995 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-21 12:53:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 650. [2021-12-21 12:53:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 510 states have (on average 1.6490196078431372) internal successors, (841), 528 states have internal predecessors, (841), 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 12:53:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1060 transitions. [2021-12-21 12:53:13,587 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1060 transitions. Word has length 134 [2021-12-21 12:53:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:13,588 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 1060 transitions. [2021-12-21 12:53:13,588 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 12:53:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1060 transitions. [2021-12-21 12:53:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-21 12:53:13,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:13,593 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 12:53:13,620 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 12:53:13,807 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 12:53:13,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:13,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1325371807, now seen corresponding path program 1 times [2021-12-21 12:53:13,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:13,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380720330] [2021-12-21 12:53:13,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:13,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:53:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:53:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 12:53:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 12:53:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 12:53:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 12:53:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,039 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 12:53:14,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:14,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380720330] [2021-12-21 12:53:14,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380720330] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:14,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138006523] [2021-12-21 12:53:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:14,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:14,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:14,049 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 12:53:14,051 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 12:53:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:14,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:14,517 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 12:53:14,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:14,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138006523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:14,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:14,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-21 12:53:14,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298116730] [2021-12-21 12:53:14,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:14,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:14,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:14,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:14,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:14,519 INFO L87 Difference]: Start difference. First operand 650 states and 1060 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 12:53:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:14,620 INFO L93 Difference]: Finished difference Result 1299 states and 2123 transitions. [2021-12-21 12:53:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:14,621 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 12:53:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:14,624 INFO L225 Difference]: With dead ends: 1299 [2021-12-21 12:53:14,624 INFO L226 Difference]: Without dead ends: 672 [2021-12-21 12:53:14,626 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 12:53:14,627 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 141 mSDsluCounter, 4905 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 5912 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:14,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 5912 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-12-21 12:53:14,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 650. [2021-12-21 12:53:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 510 states have (on average 1.6490196078431372) internal successors, (841), 528 states have internal predecessors, (841), 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 12:53:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1060 transitions. [2021-12-21 12:53:14,643 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1060 transitions. Word has length 135 [2021-12-21 12:53:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:14,644 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 1060 transitions. [2021-12-21 12:53:14,644 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 12:53:14,644 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1060 transitions. [2021-12-21 12:53:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-21 12:53:14,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:14,647 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 12:53:14,673 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 12:53:14,863 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 12:53:14,863 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash -882649064, now seen corresponding path program 1 times [2021-12-21 12:53:14,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:14,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446618341] [2021-12-21 12:53:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:14,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:14,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 12:53:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:53:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:53:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 12:53:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 12:53:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 12:53:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 12:53:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 12:53:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,035 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 12:53:15,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:15,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446618341] [2021-12-21 12:53:15,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446618341] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:15,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741181835] [2021-12-21 12:53:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:15,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:15,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:15,037 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 12:53:15,116 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 12:53:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:15,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:15,463 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 12:53:15,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:15,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741181835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:15,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:15,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2021-12-21 12:53:15,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520673142] [2021-12-21 12:53:15,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:15,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:15,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:15,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:15,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:53:15,465 INFO L87 Difference]: Start difference. First operand 650 states and 1060 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 12:53:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:15,589 INFO L93 Difference]: Finished difference Result 1331 states and 2191 transitions. [2021-12-21 12:53:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:15,590 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 12:53:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:15,593 INFO L225 Difference]: With dead ends: 1331 [2021-12-21 12:53:15,593 INFO L226 Difference]: Without dead ends: 704 [2021-12-21 12:53:15,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:15,596 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 167 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2838 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 12:53:15,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2838 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:15,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-12-21 12:53:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 695. [2021-12-21 12:53:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 554 states have (on average 1.6696750902527075) internal successors, (925), 572 states have internal predecessors, (925), 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 12:53:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1143 transitions. [2021-12-21 12:53:15,612 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1143 transitions. Word has length 136 [2021-12-21 12:53:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:15,613 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1143 transitions. [2021-12-21 12:53:15,613 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 12:53:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1143 transitions. [2021-12-21 12:53:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-21 12:53:15,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:15,616 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 12:53:15,643 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 12:53:15,836 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 12:53:15,837 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:15,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1566001209, now seen corresponding path program 1 times [2021-12-21 12:53:15,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:15,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381100102] [2021-12-21 12:53:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:15,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 12:53:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:53:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:53:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 12:53:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 12:53:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:15,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 12:53:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 12:53:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 12:53:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:53:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,019 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 12:53:16,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:16,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381100102] [2021-12-21 12:53:16,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381100102] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:16,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214890920] [2021-12-21 12:53:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:16,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:16,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:16,020 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 12:53:16,021 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 12:53:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:16,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:16,415 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 12:53:16,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:16,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214890920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:16,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:16,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-21 12:53:16,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837729164] [2021-12-21 12:53:16,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:16,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:16,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:16,417 INFO L87 Difference]: Start difference. First operand 695 states and 1143 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 12:53:16,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:16,541 INFO L93 Difference]: Finished difference Result 1401 states and 2306 transitions. [2021-12-21 12:53:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:16,542 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 12:53:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:16,545 INFO L225 Difference]: With dead ends: 1401 [2021-12-21 12:53:16,545 INFO L226 Difference]: Without dead ends: 729 [2021-12-21 12:53:16,548 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 12:53:16,548 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 140 mSDsluCounter, 5880 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 6877 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 12:53:16,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 6877 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:16,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-21 12:53:16,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 695. [2021-12-21 12:53:16,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 554 states have (on average 1.6696750902527075) internal successors, (925), 572 states have internal predecessors, (925), 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 12:53:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1143 transitions. [2021-12-21 12:53:16,585 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1143 transitions. Word has length 137 [2021-12-21 12:53:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:16,585 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1143 transitions. [2021-12-21 12:53:16,586 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 12:53:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1143 transitions. [2021-12-21 12:53:16,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-21 12:53:16,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:16,591 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 12:53:16,626 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 12:53:16,803 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 12:53:16,803 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 957512544, now seen corresponding path program 1 times [2021-12-21 12:53:16,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:16,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739145371] [2021-12-21 12:53:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:16,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-21 12:53:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 12:53:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 12:53:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:53:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 12:53:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 12:53:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 12:53:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 12:53:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:16,971 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 12:53:16,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:16,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739145371] [2021-12-21 12:53:16,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739145371] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:16,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696170831] [2021-12-21 12:53:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:16,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:16,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:16,973 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 12:53:16,974 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 12:53:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:17,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:17,409 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 12:53:17,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:17,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696170831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:17,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:17,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-21 12:53:17,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92636310] [2021-12-21 12:53:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:17,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:17,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:17,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:17,410 INFO L87 Difference]: Start difference. First operand 695 states and 1143 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 12:53:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:17,515 INFO L93 Difference]: Finished difference Result 1401 states and 2306 transitions. [2021-12-21 12:53:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:17,515 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 12:53:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:17,518 INFO L225 Difference]: With dead ends: 1401 [2021-12-21 12:53:17,519 INFO L226 Difference]: Without dead ends: 729 [2021-12-21 12:53:17,521 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 12:53:17,522 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 150 mSDsluCounter, 5868 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 6865 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 12:53:17,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 6865 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-21 12:53:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 695. [2021-12-21 12:53:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 554 states have (on average 1.6696750902527075) internal successors, (925), 572 states have internal predecessors, (925), 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 12:53:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1143 transitions. [2021-12-21 12:53:17,548 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1143 transitions. Word has length 138 [2021-12-21 12:53:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:17,548 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1143 transitions. [2021-12-21 12:53:17,549 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 12:53:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1143 transitions. [2021-12-21 12:53:17,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-21 12:53:17,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:17,552 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 12:53:17,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-21 12:53:17,770 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 12:53:17,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash 256907180, now seen corresponding path program 1 times [2021-12-21 12:53:17,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:17,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899625694] [2021-12-21 12:53:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:17,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:53:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:53:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 12:53:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:53:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 12:53:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 12:53:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:53:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 12:53:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:17,983 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 12:53:17,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:17,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899625694] [2021-12-21 12:53:17,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899625694] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:17,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335399394] [2021-12-21 12:53:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:17,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:17,985 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 12:53:17,986 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 12:53:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:18,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:18,391 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 12:53:18,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:18,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335399394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:18,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:18,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-12-21 12:53:18,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402721084] [2021-12-21 12:53:18,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:18,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:18,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:18,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:18,394 INFO L87 Difference]: Start difference. First operand 695 states and 1143 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 12:53:18,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:18,535 INFO L93 Difference]: Finished difference Result 1392 states and 2291 transitions. [2021-12-21 12:53:18,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:18,536 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 12:53:18,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:18,539 INFO L225 Difference]: With dead ends: 1392 [2021-12-21 12:53:18,539 INFO L226 Difference]: Without dead ends: 720 [2021-12-21 12:53:18,541 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 12:53:18,542 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 160 mSDsluCounter, 5856 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 6853 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 12:53:18,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 6853 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2021-12-21 12:53:18,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 695. [2021-12-21 12:53:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 554 states have (on average 1.6696750902527075) internal successors, (925), 572 states have internal predecessors, (925), 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 12:53:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1143 transitions. [2021-12-21 12:53:18,573 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1143 transitions. Word has length 139 [2021-12-21 12:53:18,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:18,574 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1143 transitions. [2021-12-21 12:53:18,574 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 12:53:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1143 transitions. [2021-12-21 12:53:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-21 12:53:18,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:18,577 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, 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 12:53:18,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:18,787 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 12:53:18,787 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:18,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:18,788 INFO L85 PathProgramCache]: Analyzing trace with hash 198062218, now seen corresponding path program 1 times [2021-12-21 12:53:18,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:18,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140468739] [2021-12-21 12:53:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:18,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:53:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:53:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:53:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 12:53:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:53:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 12:53:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-21 12:53:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:53:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 12:53:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:18,936 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 12:53:18,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:18,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140468739] [2021-12-21 12:53:18,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140468739] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:18,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405756359] [2021-12-21 12:53:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:18,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:18,938 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 12:53:18,964 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 12:53:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:19,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:19,303 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 12:53:19,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405756359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:19,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:19,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-21 12:53:19,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005041165] [2021-12-21 12:53:19,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:19,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:19,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:19,304 INFO L87 Difference]: Start difference. First operand 695 states and 1143 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 12:53:19,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:19,350 INFO L93 Difference]: Finished difference Result 1356 states and 2238 transitions. [2021-12-21 12:53:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:19,351 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 12:53:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:19,354 INFO L225 Difference]: With dead ends: 1356 [2021-12-21 12:53:19,354 INFO L226 Difference]: Without dead ends: 695 [2021-12-21 12:53:19,356 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 12:53:19,357 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 35 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2993 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 12:53:19,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2993 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-12-21 12:53:19,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2021-12-21 12:53:19,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 554 states have (on average 1.660649819494585) internal successors, (920), 572 states have internal predecessors, (920), 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 12:53:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1138 transitions. [2021-12-21 12:53:19,372 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1138 transitions. Word has length 139 [2021-12-21 12:53:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:19,372 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 1138 transitions. [2021-12-21 12:53:19,372 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 12:53:19,372 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1138 transitions. [2021-12-21 12:53:19,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-21 12:53:19,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:19,375 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 12:53:19,396 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 12:53:19,591 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 12:53:19,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:19,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash -276534079, now seen corresponding path program 1 times [2021-12-21 12:53:19,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:19,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686888442] [2021-12-21 12:53:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:19,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:53:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:53:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 12:53:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:53:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 12:53:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:53:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 12:53:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-21 12:53:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,755 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 12:53:19,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:19,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686888442] [2021-12-21 12:53:19,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686888442] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:19,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162351790] [2021-12-21 12:53:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:19,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:19,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:19,757 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 12:53:19,758 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 12:53:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:19,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:19,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:20,129 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 12:53:20,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:20,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162351790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:20,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:20,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-21 12:53:20,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535409046] [2021-12-21 12:53:20,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:20,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:20,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:20,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:20,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:20,131 INFO L87 Difference]: Start difference. First operand 695 states and 1138 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 12:53:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:20,226 INFO L93 Difference]: Finished difference Result 1324 states and 2170 transitions. [2021-12-21 12:53:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:20,227 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 12:53:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:20,230 INFO L225 Difference]: With dead ends: 1324 [2021-12-21 12:53:20,230 INFO L226 Difference]: Without dead ends: 721 [2021-12-21 12:53:20,232 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 12:53:20,232 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 116 mSDsluCounter, 4919 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 5923 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 12:53:20,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 5923 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-12-21 12:53:20,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 708. [2021-12-21 12:53:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 564 states have (on average 1.6578014184397163) internal successors, (935), 584 states have internal predecessors, (935), 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 12:53:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1159 transitions. [2021-12-21 12:53:20,248 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1159 transitions. Word has length 140 [2021-12-21 12:53:20,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:20,248 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1159 transitions. [2021-12-21 12:53:20,249 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 12:53:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1159 transitions. [2021-12-21 12:53:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-21 12:53:20,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:20,252 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 12:53:20,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:20,471 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 12:53:20,471 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 686505728, now seen corresponding path program 1 times [2021-12-21 12:53:20,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:20,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823739434] [2021-12-21 12:53:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:20,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 12:53:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 12:53:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 12:53:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 12:53:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:53:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,617 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 12:53:20,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:20,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823739434] [2021-12-21 12:53:20,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823739434] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:20,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119710513] [2021-12-21 12:53:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:20,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:20,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:20,632 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 12:53:20,668 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 12:53:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:20,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 12:53:20,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:21,063 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 12:53:21,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:21,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119710513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:21,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:21,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-21 12:53:21,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768146628] [2021-12-21 12:53:21,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:21,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:21,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:21,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:21,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:21,066 INFO L87 Difference]: Start difference. First operand 708 states and 1159 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 12:53:21,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:21,166 INFO L93 Difference]: Finished difference Result 1333 states and 2185 transitions. [2021-12-21 12:53:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:21,167 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 12:53:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:21,169 INFO L225 Difference]: With dead ends: 1333 [2021-12-21 12:53:21,170 INFO L226 Difference]: Without dead ends: 730 [2021-12-21 12:53:21,172 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 12:53:21,172 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 127 mSDsluCounter, 4907 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 5911 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 12:53:21,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 5911 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:21,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2021-12-21 12:53:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 708. [2021-12-21 12:53:21,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 564 states have (on average 1.6578014184397163) internal successors, (935), 584 states have internal predecessors, (935), 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 12:53:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1159 transitions. [2021-12-21 12:53:21,187 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1159 transitions. Word has length 141 [2021-12-21 12:53:21,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:21,187 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1159 transitions. [2021-12-21 12:53:21,187 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 12:53:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1159 transitions. [2021-12-21 12:53:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-21 12:53:21,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:21,190 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 12:53:21,210 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 12:53:21,405 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 12:53:21,405 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:21,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1867234450, now seen corresponding path program 1 times [2021-12-21 12:53:21,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:21,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173822145] [2021-12-21 12:53:21,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:21,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 12:53:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:53:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 12:53:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 12:53:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 12:53:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 12:53:21,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:53:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,537 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 12:53:21,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173822145] [2021-12-21 12:53:21,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173822145] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403504164] [2021-12-21 12:53:21,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:21,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:21,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:21,539 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 12:53:21,540 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 12:53:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:21,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:21,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:21,906 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 12:53:21,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:21,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403504164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:21,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:21,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-12-21 12:53:21,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627534467] [2021-12-21 12:53:21,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:21,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:21,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:21,908 INFO L87 Difference]: Start difference. First operand 708 states and 1159 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 12:53:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:21,952 INFO L93 Difference]: Finished difference Result 1378 states and 2268 transitions. [2021-12-21 12:53:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 12:53:21,953 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 12:53:21,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:21,955 INFO L225 Difference]: With dead ends: 1378 [2021-12-21 12:53:21,956 INFO L226 Difference]: Without dead ends: 708 [2021-12-21 12:53:21,958 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 12:53:21,958 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 10 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2995 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 12:53:21,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2995 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-12-21 12:53:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2021-12-21 12:53:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 564 states have (on average 1.6524822695035462) internal successors, (932), 584 states have internal predecessors, (932), 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 12:53:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1156 transitions. [2021-12-21 12:53:21,976 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1156 transitions. Word has length 141 [2021-12-21 12:53:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:21,976 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 1156 transitions. [2021-12-21 12:53:21,976 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 12:53:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1156 transitions. [2021-12-21 12:53:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 12:53:21,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:21,979 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 12:53:22,015 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 12:53:22,195 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 12:53:22,195 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -769522491, now seen corresponding path program 1 times [2021-12-21 12:53:22,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:22,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44979617] [2021-12-21 12:53:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:22,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:53:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:53:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:53:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:53:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 12:53:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,334 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 12:53:22,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:22,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44979617] [2021-12-21 12:53:22,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44979617] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:22,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181887277] [2021-12-21 12:53:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:22,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:22,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:22,339 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 12:53:22,340 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 12:53:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:22,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:53:22,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:22,696 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 12:53:22,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:22,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181887277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:22,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:22,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-21 12:53:22,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022714459] [2021-12-21 12:53:22,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:22,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:22,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:53:22,698 INFO L87 Difference]: Start difference. First operand 708 states and 1156 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 12:53:22,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:22,829 INFO L93 Difference]: Finished difference Result 1374 states and 2263 transitions. [2021-12-21 12:53:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:22,830 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 12:53:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:22,833 INFO L225 Difference]: With dead ends: 1374 [2021-12-21 12:53:22,833 INFO L226 Difference]: Without dead ends: 771 [2021-12-21 12:53:22,835 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 12:53:22,835 INFO L933 BasicCegarLoop]: 949 mSDtfsCounter, 237 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 2818 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 12:53:22,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 2818 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:22,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-12-21 12:53:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 753. [2021-12-21 12:53:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 608 states have (on average 1.6710526315789473) internal successors, (1016), 628 states have internal predecessors, (1016), 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 12:53:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1237 transitions. [2021-12-21 12:53:22,853 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1237 transitions. Word has length 142 [2021-12-21 12:53:22,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:22,854 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1237 transitions. [2021-12-21 12:53:22,854 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 12:53:22,854 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1237 transitions. [2021-12-21 12:53:22,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 12:53:22,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:22,857 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 12:53:22,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:23,074 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 12:53:23,074 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:23,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1470041913, now seen corresponding path program 1 times [2021-12-21 12:53:23,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:23,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31123135] [2021-12-21 12:53:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:23,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:53:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:53:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 12:53:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:53:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 12:53:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,204 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 12:53:23,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:23,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31123135] [2021-12-21 12:53:23,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31123135] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:23,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485868740] [2021-12-21 12:53:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:23,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:23,205 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 12:53:23,206 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 12:53:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:23,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:23,613 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 12:53:23,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:23,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485868740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:23,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:23,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-21 12:53:23,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703411398] [2021-12-21 12:53:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:23,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:23,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:53:23,615 INFO L87 Difference]: Start difference. First operand 753 states and 1237 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 12:53:23,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:23,729 INFO L93 Difference]: Finished difference Result 1390 states and 2279 transitions. [2021-12-21 12:53:23,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:23,729 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 12:53:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:23,732 INFO L225 Difference]: With dead ends: 1390 [2021-12-21 12:53:23,732 INFO L226 Difference]: Without dead ends: 787 [2021-12-21 12:53:23,735 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 12:53:23,735 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 138 mSDsluCounter, 5841 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 6830 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 12:53:23,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 6830 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:23,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-12-21 12:53:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 753. [2021-12-21 12:53:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 608 states have (on average 1.6710526315789473) internal successors, (1016), 628 states have internal predecessors, (1016), 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 12:53:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1237 transitions. [2021-12-21 12:53:23,751 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1237 transitions. Word has length 142 [2021-12-21 12:53:23,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:23,751 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1237 transitions. [2021-12-21 12:53:23,751 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 12:53:23,751 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1237 transitions. [2021-12-21 12:53:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-21 12:53:23,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:23,754 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 12:53:23,777 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 12:53:23,967 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 12:53:23,967 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:23,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1319537596, now seen corresponding path program 1 times [2021-12-21 12:53:23,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:23,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818251708] [2021-12-21 12:53:23,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:23,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:53:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:53:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 12:53:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 12:53:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 12:53:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 12:53:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,113 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 12:53:24,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:24,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818251708] [2021-12-21 12:53:24,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818251708] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:24,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735733282] [2021-12-21 12:53:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:24,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:24,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:24,129 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 12:53:24,183 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 12:53:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 12:53:24,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:24,559 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 12:53:24,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:24,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735733282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:24,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:24,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2021-12-21 12:53:24,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126610356] [2021-12-21 12:53:24,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:24,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:53:24,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:24,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:53:24,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:53:24,561 INFO L87 Difference]: Start difference. First operand 753 states and 1237 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 12:53:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:24,675 INFO L93 Difference]: Finished difference Result 1381 states and 2265 transitions. [2021-12-21 12:53:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:24,675 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 12:53:24,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:24,678 INFO L225 Difference]: With dead ends: 1381 [2021-12-21 12:53:24,678 INFO L226 Difference]: Without dead ends: 778 [2021-12-21 12:53:24,681 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 12:53:24,681 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 148 mSDsluCounter, 5829 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 6818 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 12:53:24,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 6818 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:53:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-12-21 12:53:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 753. [2021-12-21 12:53:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 608 states have (on average 1.6710526315789473) internal successors, (1016), 628 states have internal predecessors, (1016), 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 12:53:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1237 transitions. [2021-12-21 12:53:24,699 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1237 transitions. Word has length 143 [2021-12-21 12:53:24,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:24,700 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1237 transitions. [2021-12-21 12:53:24,700 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 12:53:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1237 transitions. [2021-12-21 12:53:24,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 12:53:24,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:24,703 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 12:53:24,723 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 12:53:24,921 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 12:53:24,921 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:24,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1865375316, now seen corresponding path program 1 times [2021-12-21 12:53:24,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:24,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054820454] [2021-12-21 12:53:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:24,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 12:53:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 12:53:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:53:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 12:53:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 12:53:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 12:53:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,057 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 12:53:25,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:25,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054820454] [2021-12-21 12:53:25,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054820454] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:25,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468609805] [2021-12-21 12:53:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:25,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:25,058 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 12:53:25,059 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 12:53:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:25,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:25,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:25,468 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 12:53:25,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:25,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468609805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:25,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:25,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:25,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046536968] [2021-12-21 12:53:25,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:25,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:25,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:25,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:25,470 INFO L87 Difference]: Start difference. First operand 753 states and 1237 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 12:53:25,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:25,849 INFO L93 Difference]: Finished difference Result 1360 states and 2262 transitions. [2021-12-21 12:53:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:25,849 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 12:53:25,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:25,854 INFO L225 Difference]: With dead ends: 1360 [2021-12-21 12:53:25,854 INFO L226 Difference]: Without dead ends: 761 [2021-12-21 12:53:25,857 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 12:53:25,857 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 945 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2552 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 12:53:25,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 2552 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-12-21 12:53:25,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2021-12-21 12:53:25,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 615 states have (on average 1.6715447154471545) internal successors, (1028), 635 states have internal predecessors, (1028), 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 12:53:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1250 transitions. [2021-12-21 12:53:25,874 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1250 transitions. Word has length 144 [2021-12-21 12:53:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:25,875 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 1250 transitions. [2021-12-21 12:53:25,875 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 12:53:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1250 transitions. [2021-12-21 12:53:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 12:53:25,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:25,877 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 12:53:25,907 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 12:53:26,083 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 12:53:26,083 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash 475848288, now seen corresponding path program 1 times [2021-12-21 12:53:26,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:26,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72748665] [2021-12-21 12:53:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:26,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 12:53:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 12:53:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 12:53:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 12:53:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:53:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 12:53:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,218 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 12:53:26,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:26,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72748665] [2021-12-21 12:53:26,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72748665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:26,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85699257] [2021-12-21 12:53:26,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:26,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:26,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:26,232 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 12:53:26,258 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 12:53:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:26,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:26,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:26,623 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 12:53:26,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:26,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85699257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:26,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:26,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:26,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633954537] [2021-12-21 12:53:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:26,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:26,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:26,625 INFO L87 Difference]: Start difference. First operand 761 states and 1250 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 12:53:26,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:26,996 INFO L93 Difference]: Finished difference Result 1376 states and 2285 transitions. [2021-12-21 12:53:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:26,996 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 12:53:26,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:27,001 INFO L225 Difference]: With dead ends: 1376 [2021-12-21 12:53:27,001 INFO L226 Difference]: Without dead ends: 769 [2021-12-21 12:53:27,003 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 12:53:27,004 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 947 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 2552 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 12:53:27,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 2552 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-12-21 12:53:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2021-12-21 12:53:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 622 states have (on average 1.6720257234726688) internal successors, (1040), 642 states have internal predecessors, (1040), 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 12:53:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1263 transitions. [2021-12-21 12:53:27,020 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1263 transitions. Word has length 146 [2021-12-21 12:53:27,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:27,020 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1263 transitions. [2021-12-21 12:53:27,020 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 12:53:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1263 transitions. [2021-12-21 12:53:27,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-21 12:53:27,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:27,023 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 12:53:27,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:27,239 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 12:53:27,239 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1940058476, now seen corresponding path program 1 times [2021-12-21 12:53:27,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:27,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291156997] [2021-12-21 12:53:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:27,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 12:53:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 12:53:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:53:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 12:53:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 12:53:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 12:53:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 12:53:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,357 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 12:53:27,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291156997] [2021-12-21 12:53:27,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291156997] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:27,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761971880] [2021-12-21 12:53:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:27,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:27,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:27,372 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 12:53:27,395 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 12:53:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:27,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:27,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:27,780 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 12:53:27,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:27,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761971880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:27,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:27,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:27,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570818736] [2021-12-21 12:53:27,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:27,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:27,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:27,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:27,781 INFO L87 Difference]: Start difference. First operand 769 states and 1263 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 12:53:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:28,175 INFO L93 Difference]: Finished difference Result 1392 states and 2308 transitions. [2021-12-21 12:53:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:28,175 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 12:53:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:28,178 INFO L225 Difference]: With dead ends: 1392 [2021-12-21 12:53:28,178 INFO L226 Difference]: Without dead ends: 777 [2021-12-21 12:53:28,180 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 12:53:28,180 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 945 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:28,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 2552 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 12:53:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-21 12:53:28,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2021-12-21 12:53:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 629 states have (on average 1.6724960254372019) internal successors, (1052), 649 states have internal predecessors, (1052), 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 12:53:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1276 transitions. [2021-12-21 12:53:28,198 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1276 transitions. Word has length 148 [2021-12-21 12:53:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:28,198 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 1276 transitions. [2021-12-21 12:53:28,199 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 12:53:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1276 transitions. [2021-12-21 12:53:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-21 12:53:28,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:28,201 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 12:53:28,221 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 12:53:28,419 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 12:53:28,419 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1764205400, now seen corresponding path program 1 times [2021-12-21 12:53:28,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:28,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726939860] [2021-12-21 12:53:28,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:28,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 12:53:28,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 12:53:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 12:53:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:53:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 12:53:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:53:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 12:53:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,568 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 12:53:28,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:28,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726939860] [2021-12-21 12:53:28,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726939860] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:28,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874878412] [2021-12-21 12:53:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:28,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:28,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:28,570 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 12:53:28,587 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 12:53:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:53:28,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:28,983 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 12:53:28,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:28,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874878412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:28,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:28,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-12-21 12:53:28,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044918859] [2021-12-21 12:53:28,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:28,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:28,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:53:28,985 INFO L87 Difference]: Start difference. First operand 777 states and 1276 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 12:53:29,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:29,365 INFO L93 Difference]: Finished difference Result 1408 states and 2331 transitions. [2021-12-21 12:53:29,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:29,366 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 12:53:29,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:29,369 INFO L225 Difference]: With dead ends: 1408 [2021-12-21 12:53:29,369 INFO L226 Difference]: Without dead ends: 785 [2021-12-21 12:53:29,372 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 12:53:29,372 INFO L933 BasicCegarLoop]: 983 mSDtfsCounter, 954 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2552 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 12:53:29,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 2552 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2021-12-21 12:53:29,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 785. [2021-12-21 12:53:29,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 636 states have (on average 1.6729559748427674) internal successors, (1064), 656 states have internal predecessors, (1064), 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 12:53:29,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1289 transitions. [2021-12-21 12:53:29,410 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1289 transitions. Word has length 150 [2021-12-21 12:53:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:29,410 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 1289 transitions. [2021-12-21 12:53:29,410 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 12:53:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1289 transitions. [2021-12-21 12:53:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-21 12:53:29,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:29,413 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 12:53:29,443 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 12:53:29,630 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 12:53:29,631 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:29,631 INFO L85 PathProgramCache]: Analyzing trace with hash -856104148, now seen corresponding path program 1 times [2021-12-21 12:53:29,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:29,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853638552] [2021-12-21 12:53:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:29,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:53:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:53:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:53:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:53:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 12:53:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 12:53:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 12:53:29,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:53:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 12:53:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 12:53:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,775 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 12:53:29,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:29,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853638552] [2021-12-21 12:53:29,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853638552] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:29,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818757939] [2021-12-21 12:53:29,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:29,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:29,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:29,777 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 12:53:29,778 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 12:53:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:29,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1422 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:53:29,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:30,131 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 12:53:30,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:30,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818757939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:30,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:30,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-21 12:53:30,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243893953] [2021-12-21 12:53:30,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:30,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:30,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:30,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:30,132 INFO L87 Difference]: Start difference. First operand 785 states and 1289 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 12:53:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:30,167 INFO L93 Difference]: Finished difference Result 1547 states and 2552 transitions. [2021-12-21 12:53:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:30,168 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 12:53:30,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:30,170 INFO L225 Difference]: With dead ends: 1547 [2021-12-21 12:53:30,170 INFO L226 Difference]: Without dead ends: 750 [2021-12-21 12:53:30,172 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 12:53:30,172 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 13 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2994 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 12:53:30,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 2994 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2021-12-21 12:53:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2021-12-21 12:53:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 604 states have (on average 1.6523178807947019) internal successors, (998), 622 states have internal predecessors, (998), 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 12:53:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1219 transitions. [2021-12-21 12:53:30,186 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1219 transitions. Word has length 152 [2021-12-21 12:53:30,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:30,186 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1219 transitions. [2021-12-21 12:53:30,187 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 12:53:30,187 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1219 transitions. [2021-12-21 12:53:30,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-21 12:53:30,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:30,189 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 12:53:30,207 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 12:53:30,403 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 12:53:30,403 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:30,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:30,404 INFO L85 PathProgramCache]: Analyzing trace with hash 364381681, now seen corresponding path program 1 times [2021-12-21 12:53:30,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:30,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497154113] [2021-12-21 12:53:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:30,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 12:53:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:53:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:53:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 12:53:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 12:53:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:53:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 12:53:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 12:53:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 12:53:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,568 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 12:53:30,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:30,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497154113] [2021-12-21 12:53:30,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497154113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:30,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22636265] [2021-12-21 12:53:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:30,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:30,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:30,570 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 12:53:30,571 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 12:53:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:30,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 12:53:30,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:30,971 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 12:53:30,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:30,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22636265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:30,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:30,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2021-12-21 12:53:30,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447225118] [2021-12-21 12:53:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:30,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:30,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:30,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:53:30,973 INFO L87 Difference]: Start difference. First operand 750 states and 1219 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 12:53:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:31,036 INFO L93 Difference]: Finished difference Result 1497 states and 2432 transitions. [2021-12-21 12:53:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:31,038 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 12:53:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:31,040 INFO L225 Difference]: With dead ends: 1497 [2021-12-21 12:53:31,041 INFO L226 Difference]: Without dead ends: 764 [2021-12-21 12:53:31,043 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 12:53:31,044 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 138 mSDsluCounter, 4887 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5898 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 12:53:31,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 5898 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:31,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-12-21 12:53:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 743. [2021-12-21 12:53:31,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 597 states have (on average 1.644891122278057) internal successors, (982), 615 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 12:53:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1203 transitions. [2021-12-21 12:53:31,061 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1203 transitions. Word has length 153 [2021-12-21 12:53:31,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:31,061 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1203 transitions. [2021-12-21 12:53:31,061 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 12:53:31,061 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1203 transitions. [2021-12-21 12:53:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-21 12:53:31,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:31,063 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 12:53:31,085 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 12:53:31,281 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 12:53:31,281 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:31,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:31,281 INFO L85 PathProgramCache]: Analyzing trace with hash -55866614, now seen corresponding path program 1 times [2021-12-21 12:53:31,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:31,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530518011] [2021-12-21 12:53:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:31,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:53:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:53:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 12:53:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 12:53:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 12:53:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:31,411 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 12:53:31,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530518011] [2021-12-21 12:53:31,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530518011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:31,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:31,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:31,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2165927] [2021-12-21 12:53:31,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:31,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:31,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:31,412 INFO L87 Difference]: Start difference. First operand 743 states and 1203 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 12:53:34,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:34,312 INFO L93 Difference]: Finished difference Result 1678 states and 2738 transitions. [2021-12-21 12:53:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 12:53:34,313 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 12:53:34,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:34,318 INFO L225 Difference]: With dead ends: 1678 [2021-12-21 12:53:34,318 INFO L226 Difference]: Without dead ends: 1037 [2021-12-21 12:53:34,321 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 12:53:34,324 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 1639 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:34,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1694 Valid, 2060 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 12:53:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2021-12-21 12:53:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 751. [2021-12-21 12:53:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 605 states have (on average 1.6413223140495867) internal successors, (993), 623 states have internal predecessors, (993), 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 12:53:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1214 transitions. [2021-12-21 12:53:34,366 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1214 transitions. Word has length 154 [2021-12-21 12:53:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:34,366 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1214 transitions. [2021-12-21 12:53:34,366 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 12:53:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1214 transitions. [2021-12-21 12:53:34,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-21 12:53:34,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:34,369 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 12:53:34,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 12:53:34,369 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1526759026, now seen corresponding path program 1 times [2021-12-21 12:53:34,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:34,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522884221] [2021-12-21 12:53:34,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:34,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:53:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:53:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:53:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 12:53:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-21 12:53:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 12:53:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 12:53:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 12:53:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-21 12:53:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:34,525 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 12:53:34,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:34,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522884221] [2021-12-21 12:53:34,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522884221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:34,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:53:34,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:53:34,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742644401] [2021-12-21 12:53:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:34,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:34,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:34,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:53:34,527 INFO L87 Difference]: Start difference. First operand 751 states and 1214 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 12:53:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:37,361 INFO L93 Difference]: Finished difference Result 1714 states and 2795 transitions. [2021-12-21 12:53:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:53:37,361 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 12:53:37,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:37,365 INFO L225 Difference]: With dead ends: 1714 [2021-12-21 12:53:37,365 INFO L226 Difference]: Without dead ends: 971 [2021-12-21 12:53:37,386 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 12:53:37,387 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 1555 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:37,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 2091 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 12:53:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-12-21 12:53:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 723. [2021-12-21 12:53:37,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 580 states have (on average 1.6327586206896552) internal successors, (947), 596 states have internal predecessors, (947), 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 12:53:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1164 transitions. [2021-12-21 12:53:37,424 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1164 transitions. Word has length 154 [2021-12-21 12:53:37,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:37,424 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1164 transitions. [2021-12-21 12:53:37,425 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 12:53:37,425 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1164 transitions. [2021-12-21 12:53:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 12:53:37,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:37,427 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 12:53:37,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 12:53:37,427 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash -54809907, now seen corresponding path program 1 times [2021-12-21 12:53:37,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:37,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612934061] [2021-12-21 12:53:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:37,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 12:53:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 12:53:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 12:53:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,696 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 12:53:37,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:37,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612934061] [2021-12-21 12:53:37,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612934061] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:37,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539713122] [2021-12-21 12:53:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:37,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:37,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:37,698 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 12:53:37,699 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 12:53:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:37,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 12:53:37,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:38,161 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 12:53:38,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:38,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539713122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:38,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:38,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 12:53:38,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88162871] [2021-12-21 12:53:38,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:38,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:53:38,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:53:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:53:38,162 INFO L87 Difference]: Start difference. First operand 723 states and 1164 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 12:53:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:38,562 INFO L93 Difference]: Finished difference Result 1999 states and 3298 transitions. [2021-12-21 12:53:38,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:53:38,562 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 12:53:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:38,567 INFO L225 Difference]: With dead ends: 1999 [2021-12-21 12:53:38,567 INFO L226 Difference]: Without dead ends: 1364 [2021-12-21 12:53:38,569 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 12:53:38,569 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 930 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:38,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 4167 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-21 12:53:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1354. [2021-12-21 12:53:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1082 states have (on average 1.646025878003697) internal successors, (1781), 1114 states have internal predecessors, (1781), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2021-12-21 12:53:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 2217 transitions. [2021-12-21 12:53:38,635 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 2217 transitions. Word has length 155 [2021-12-21 12:53:38,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:38,636 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 2217 transitions. [2021-12-21 12:53:38,636 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 12:53:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 2217 transitions. [2021-12-21 12:53:38,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 12:53:38,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:38,638 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 12:53:38,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-21 12:53:38,851 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 12:53:38,851 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:38,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash -558288359, now seen corresponding path program 1 times [2021-12-21 12:53:38,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:38,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428324593] [2021-12-21 12:53:38,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:38,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:38,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:38,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:38,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 12:53:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 12:53:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,067 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 12:53:39,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:39,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428324593] [2021-12-21 12:53:39,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428324593] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:39,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11379648] [2021-12-21 12:53:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:39,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:39,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:39,084 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 12:53:39,111 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 12:53:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:39,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 12:53:39,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:39,522 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 12:53:39,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:39,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11379648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:39,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:39,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-21 12:53:39,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592474672] [2021-12-21 12:53:39,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:39,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:53:39,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:39,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:53:39,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:53:39,523 INFO L87 Difference]: Start difference. First operand 1354 states and 2217 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 12:53:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:39,646 INFO L93 Difference]: Finished difference Result 3246 states and 5389 transitions. [2021-12-21 12:53:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:53:39,646 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 12:53:39,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:39,654 INFO L225 Difference]: With dead ends: 3246 [2021-12-21 12:53:39,654 INFO L226 Difference]: Without dead ends: 1981 [2021-12-21 12:53:39,658 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 12:53:39,659 INFO L933 BasicCegarLoop]: 1900 mSDtfsCounter, 983 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2911 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 12:53:39,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [983 Valid, 2911 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2021-12-21 12:53:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1354. [2021-12-21 12:53:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1082 states have (on average 1.645101663585952) internal successors, (1780), 1114 states have internal predecessors, (1780), 206 states have call successors, (206), 66 states have call predecessors, (206), 65 states have return successors, (230), 199 states have call predecessors, (230), 202 states have call successors, (230) [2021-12-21 12:53:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 2216 transitions. [2021-12-21 12:53:39,747 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 2216 transitions. Word has length 160 [2021-12-21 12:53:39,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:39,748 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 2216 transitions. [2021-12-21 12:53:39,748 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 12:53:39,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 2216 transitions. [2021-12-21 12:53:39,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 12:53:39,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:39,750 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 12:53:39,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-21 12:53:39,957 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 12:53:39,957 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -283528745, now seen corresponding path program 1 times [2021-12-21 12:53:39,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:39,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311030724] [2021-12-21 12:53:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:39,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 12:53:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 12:53:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,172 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 12:53:40,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:40,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311030724] [2021-12-21 12:53:40,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311030724] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:40,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842562126] [2021-12-21 12:53:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:40,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:40,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:40,174 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 12:53:40,175 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 12:53:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:40,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 12:53:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:40,560 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 12:53:40,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:40,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842562126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:40,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:40,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2021-12-21 12:53:40,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115548387] [2021-12-21 12:53:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:40,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:40,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:40,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:53:40,562 INFO L87 Difference]: Start difference. First operand 1354 states and 2216 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 12:53:40,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:40,994 INFO L93 Difference]: Finished difference Result 1986 states and 3290 transitions. [2021-12-21 12:53:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:53:40,995 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 12:53:40,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:41,003 INFO L225 Difference]: With dead ends: 1986 [2021-12-21 12:53:41,003 INFO L226 Difference]: Without dead ends: 1983 [2021-12-21 12:53:41,004 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 12:53:41,004 INFO L933 BasicCegarLoop]: 1908 mSDtfsCounter, 959 mSDsluCounter, 5593 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 7501 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:41,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 7501 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:53:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2021-12-21 12:53:41,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1972. [2021-12-21 12:53:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1576 states have (on average 1.6529187817258884) internal successors, (2605), 1620 states have internal predecessors, (2605), 302 states have call successors, (302), 95 states have call predecessors, (302), 93 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2021-12-21 12:53:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3253 transitions. [2021-12-21 12:53:41,127 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3253 transitions. Word has length 160 [2021-12-21 12:53:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:41,127 INFO L470 AbstractCegarLoop]: Abstraction has 1972 states and 3253 transitions. [2021-12-21 12:53:41,127 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 12:53:41,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3253 transitions. [2021-12-21 12:53:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-21 12:53:41,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:41,130 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 12:53:41,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-21 12:53:41,330 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 12:53:41,330 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:41,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:41,331 INFO L85 PathProgramCache]: Analyzing trace with hash -630674917, now seen corresponding path program 1 times [2021-12-21 12:53:41,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:41,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342778856] [2021-12-21 12:53:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:41,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:41,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 12:53:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 12:53:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,560 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 12:53:41,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:41,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342778856] [2021-12-21 12:53:41,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342778856] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:41,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740802938] [2021-12-21 12:53:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:41,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:41,562 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 12:53:41,563 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 12:53:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:41,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:53:41,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:41,948 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 12:53:41,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:41,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740802938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:41,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:41,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-21 12:53:41,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098369829] [2021-12-21 12:53:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:41,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:41,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:41,949 INFO L87 Difference]: Start difference. First operand 1972 states and 3253 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 12:53:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:42,096 INFO L93 Difference]: Finished difference Result 3874 states and 6456 transitions. [2021-12-21 12:53:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:42,097 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 12:53:42,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:42,110 INFO L225 Difference]: With dead ends: 3874 [2021-12-21 12:53:42,110 INFO L226 Difference]: Without dead ends: 1990 [2021-12-21 12:53:42,116 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 12:53:42,116 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 86 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2926 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 12:53:42,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 2926 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-12-21 12:53:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1990. [2021-12-21 12:53:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1591 states have (on average 1.6486486486486487) internal successors, (2623), 1635 states have internal predecessors, (2623), 302 states have call successors, (302), 98 states have call predecessors, (302), 96 states have return successors, (346), 295 states have call predecessors, (346), 297 states have call successors, (346) [2021-12-21 12:53:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 3271 transitions. [2021-12-21 12:53:42,252 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 3271 transitions. Word has length 160 [2021-12-21 12:53:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:42,254 INFO L470 AbstractCegarLoop]: Abstraction has 1990 states and 3271 transitions. [2021-12-21 12:53:42,254 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 12:53:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 3271 transitions. [2021-12-21 12:53:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-21 12:53:42,257 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:42,257 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 12:53:42,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-21 12:53:42,475 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 12:53:42,475 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:42,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:42,476 INFO L85 PathProgramCache]: Analyzing trace with hash -777076604, now seen corresponding path program 1 times [2021-12-21 12:53:42,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:42,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356980479] [2021-12-21 12:53:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:42,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 12:53:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 12:53:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,701 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 12:53:42,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356980479] [2021-12-21 12:53:42,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356980479] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078718383] [2021-12-21 12:53:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:42,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:42,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:42,702 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 12:53:42,704 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 12:53:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:42,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:42,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:43,151 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 12:53:43,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:43,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078718383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:43,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:43,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:53:43,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591231876] [2021-12-21 12:53:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:43,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:43,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:43,153 INFO L87 Difference]: Start difference. First operand 1990 states and 3271 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 12:53:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:46,504 INFO L93 Difference]: Finished difference Result 6942 states and 11660 transitions. [2021-12-21 12:53:46,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:53:46,505 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 12:53:46,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:46,523 INFO L225 Difference]: With dead ends: 6942 [2021-12-21 12:53:46,524 INFO L226 Difference]: Without dead ends: 5040 [2021-12-21 12:53:46,534 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 12:53:46,534 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 3197 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 4800 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 5683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 4800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:46,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3316 Valid, 2714 Invalid, 5683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 4800 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 12:53:46,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2021-12-21 12:53:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 4757. [2021-12-21 12:53:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4757 states, 3780 states have (on average 1.6362433862433863) internal successors, (6185), 3879 states have internal predecessors, (6185), 733 states have call successors, (733), 244 states have call predecessors, (733), 243 states have return successors, (951), 717 states have call predecessors, (951), 724 states have call successors, (951) [2021-12-21 12:53:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 7869 transitions. [2021-12-21 12:53:46,922 INFO L78 Accepts]: Start accepts. Automaton has 4757 states and 7869 transitions. Word has length 162 [2021-12-21 12:53:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:46,922 INFO L470 AbstractCegarLoop]: Abstraction has 4757 states and 7869 transitions. [2021-12-21 12:53:46,922 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 12:53:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4757 states and 7869 transitions. [2021-12-21 12:53:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 12:53:46,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:46,925 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 12:53:46,943 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 12:53:47,139 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 12:53:47,139 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1932087023, now seen corresponding path program 1 times [2021-12-21 12:53:47,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:47,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257123855] [2021-12-21 12:53:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:47,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 12:53:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 12:53:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 12:53:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,397 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 12:53:47,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:47,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257123855] [2021-12-21 12:53:47,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257123855] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:47,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505758453] [2021-12-21 12:53:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:47,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:47,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:47,412 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 12:53:47,427 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 12:53:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:47,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:47,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:47,886 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 12:53:47,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:47,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505758453] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:47,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:47,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2021-12-21 12:53:47,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439944404] [2021-12-21 12:53:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:47,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:53:47,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:47,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:53:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:53:47,888 INFO L87 Difference]: Start difference. First operand 4757 states and 7869 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 12:53:48,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:48,733 INFO L93 Difference]: Finished difference Result 10702 states and 17867 transitions. [2021-12-21 12:53:48,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:53:48,734 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 12:53:48,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:48,757 INFO L225 Difference]: With dead ends: 10702 [2021-12-21 12:53:48,758 INFO L226 Difference]: Without dead ends: 6018 [2021-12-21 12:53:48,775 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 12:53:48,776 INFO L933 BasicCegarLoop]: 1451 mSDtfsCounter, 1772 mSDsluCounter, 4525 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:48,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 5976 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 12:53:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2021-12-21 12:53:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 6003. [2021-12-21 12:53:49,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6003 states, 4851 states have (on average 1.6250257678829108) internal successors, (7883), 4952 states have internal predecessors, (7883), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2021-12-21 12:53:49,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6003 states to 6003 states and 9981 transitions. [2021-12-21 12:53:49,269 INFO L78 Accepts]: Start accepts. Automaton has 6003 states and 9981 transitions. Word has length 163 [2021-12-21 12:53:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:49,269 INFO L470 AbstractCegarLoop]: Abstraction has 6003 states and 9981 transitions. [2021-12-21 12:53:49,269 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 12:53:49,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6003 states and 9981 transitions. [2021-12-21 12:53:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-21 12:53:49,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:49,273 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 12:53:49,295 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 12:53:49,491 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 12:53:49,491 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1492653975, now seen corresponding path program 1 times [2021-12-21 12:53:49,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:49,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463028918] [2021-12-21 12:53:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:49,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 12:53:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 12:53:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,682 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 12:53:49,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:49,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463028918] [2021-12-21 12:53:49,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463028918] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:49,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235578505] [2021-12-21 12:53:49,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:49,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:49,683 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 12:53:49,684 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 12:53:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:49,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:49,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:50,152 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 12:53:50,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:50,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235578505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:50,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:50,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:53:50,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853240478] [2021-12-21 12:53:50,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:50,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:50,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:50,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:50,153 INFO L87 Difference]: Start difference. First operand 6003 states and 9981 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 12:53:53,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:53,421 INFO L93 Difference]: Finished difference Result 11656 states and 19388 transitions. [2021-12-21 12:53:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:53:53,421 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 12:53:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:53,442 INFO L225 Difference]: With dead ends: 11656 [2021-12-21 12:53:53,442 INFO L226 Difference]: Without dead ends: 6480 [2021-12-21 12:53:53,457 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 12:53:53,457 INFO L933 BasicCegarLoop]: 1524 mSDtfsCounter, 3165 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3284 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 5645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:53:53,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3284 Valid, 2654 Invalid, 5645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 12:53:53,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2021-12-21 12:53:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 5999. [2021-12-21 12:53:53,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 4847 states have (on average 1.6238910666391582) internal successors, (7871), 4948 states have internal predecessors, (7871), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2021-12-21 12:53:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 9969 transitions. [2021-12-21 12:53:53,873 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 9969 transitions. Word has length 166 [2021-12-21 12:53:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:53,873 INFO L470 AbstractCegarLoop]: Abstraction has 5999 states and 9969 transitions. [2021-12-21 12:53:53,873 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 12:53:53,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 9969 transitions. [2021-12-21 12:53:53,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-21 12:53:53,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:53,879 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 12:53:53,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-21 12:53:54,095 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 12:53:54,095 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:54,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:54,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2112026623, now seen corresponding path program 1 times [2021-12-21 12:53:54,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:54,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761353976] [2021-12-21 12:53:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:54,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:53:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 12:53:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,328 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 12:53:54,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:54,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761353976] [2021-12-21 12:53:54,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761353976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:54,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715964977] [2021-12-21 12:53:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:54,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:54,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:54,330 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 12:53:54,331 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 12:53:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:54,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:53:54,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:54,691 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 12:53:54,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:54,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715964977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:54,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:54,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2021-12-21 12:53:54,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61462825] [2021-12-21 12:53:54,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:54,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:53:54,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:54,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:53:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:53:54,693 INFO L87 Difference]: Start difference. First operand 5999 states and 9969 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 12:53:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:53:55,158 INFO L93 Difference]: Finished difference Result 11944 states and 20280 transitions. [2021-12-21 12:53:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:53:55,159 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 12:53:55,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:53:55,179 INFO L225 Difference]: With dead ends: 11944 [2021-12-21 12:53:55,179 INFO L226 Difference]: Without dead ends: 5986 [2021-12-21 12:53:55,203 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 12:53:55,204 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 93 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 2920 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 12:53:55,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 2920 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:53:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5986 states. [2021-12-21 12:53:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5986 to 5986. [2021-12-21 12:53:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5986 states, 4834 states have (on average 1.617501034340091) internal successors, (7819), 4935 states have internal predecessors, (7819), 815 states have call successors, (815), 336 states have call predecessors, (815), 336 states have return successors, (1283), 798 states have call predecessors, (1283), 800 states have call successors, (1283) [2021-12-21 12:53:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5986 states to 5986 states and 9917 transitions. [2021-12-21 12:53:55,615 INFO L78 Accepts]: Start accepts. Automaton has 5986 states and 9917 transitions. Word has length 168 [2021-12-21 12:53:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:53:55,615 INFO L470 AbstractCegarLoop]: Abstraction has 5986 states and 9917 transitions. [2021-12-21 12:53:55,615 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 12:53:55,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5986 states and 9917 transitions. [2021-12-21 12:53:55,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-21 12:53:55,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:53:55,618 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 12:53:55,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-21 12:53:55,818 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 12:53:55,818 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:53:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:53:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1774802075, now seen corresponding path program 1 times [2021-12-21 12:53:55,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:53:55,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581003022] [2021-12-21 12:53:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:55,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:53:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:53:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:53:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:53:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:53:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:53:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:53:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:53:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:53:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:53:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:53:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:53:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:53:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:53:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:53:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-21 12:53:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,011 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 12:53:56,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:53:56,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581003022] [2021-12-21 12:53:56,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581003022] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:53:56,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220469830] [2021-12-21 12:53:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:53:56,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:53:56,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:53:56,013 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 12:53:56,013 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 12:53:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:53:56,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:53:56,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:53:56,470 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 12:53:56,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:53:56,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220469830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:53:56,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:53:56,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:53:56,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202990478] [2021-12-21 12:53:56,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:53:56,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:53:56,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:53:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:53:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:53:56,471 INFO L87 Difference]: Start difference. First operand 5986 states and 9917 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 12:54:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:00,100 INFO L93 Difference]: Finished difference Result 18008 states and 31138 transitions. [2021-12-21 12:54:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:54:00,101 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 12:54:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:00,143 INFO L225 Difference]: With dead ends: 18008 [2021-12-21 12:54:00,143 INFO L226 Difference]: Without dead ends: 12108 [2021-12-21 12:54:00,176 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 12:54:00,177 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 4253 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 3422 mSolverCounterSat, 1230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4366 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 4652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1230 IncrementalHoareTripleChecker+Valid, 3422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:00,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4366 Valid, 1840 Invalid, 4652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1230 Valid, 3422 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 12:54:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12108 states. [2021-12-21 12:54:00,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12108 to 10638. [2021-12-21 12:54:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 8568 states have (on average 1.589752567693744) internal successors, (13621), 8756 states have internal predecessors, (13621), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2021-12-21 12:54:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 17329 transitions. [2021-12-21 12:54:00,995 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 17329 transitions. Word has length 169 [2021-12-21 12:54:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:00,996 INFO L470 AbstractCegarLoop]: Abstraction has 10638 states and 17329 transitions. [2021-12-21 12:54:00,996 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 12:54:00,996 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 17329 transitions. [2021-12-21 12:54:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-21 12:54:00,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:00,998 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 12:54:01,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-21 12:54:01,198 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 12:54:01,198 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:01,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash 721190908, now seen corresponding path program 1 times [2021-12-21 12:54:01,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:01,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059444790] [2021-12-21 12:54:01,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:01,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:01,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:54:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:54:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:54:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:54:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:54:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:54:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:54:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:54:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:54:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:54:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:54:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 12:54:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,410 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 12:54:01,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059444790] [2021-12-21 12:54:01,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059444790] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:01,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130452421] [2021-12-21 12:54:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:01,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:01,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:01,411 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 12:54:01,412 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 12:54:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:01,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:54:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:01,884 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 12:54:01,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:01,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130452421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:01,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:01,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 12:54:01,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005628731] [2021-12-21 12:54:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:01,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:54:01,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:54:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:54:01,885 INFO L87 Difference]: Start difference. First operand 10638 states and 17329 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 12:54:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:05,833 INFO L93 Difference]: Finished difference Result 21131 states and 34597 transitions. [2021-12-21 12:54:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:54:05,833 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 12:54:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:05,871 INFO L225 Difference]: With dead ends: 21131 [2021-12-21 12:54:05,871 INFO L226 Difference]: Without dead ends: 11397 [2021-12-21 12:54:05,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-21 12:54:05,907 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 3068 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 5470 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3189 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 6400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 5470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:05,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3189 Valid, 3134 Invalid, 6400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 5470 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-21 12:54:05,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11397 states. [2021-12-21 12:54:06,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11397 to 10626. [2021-12-21 12:54:06,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10626 states, 8556 states have (on average 1.5877746610565684) internal successors, (13585), 8744 states have internal predecessors, (13585), 1449 states have call successors, (1449), 611 states have call predecessors, (1449), 620 states have return successors, (2259), 1426 states have call predecessors, (2259), 1430 states have call successors, (2259) [2021-12-21 12:54:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10626 states to 10626 states and 17293 transitions. [2021-12-21 12:54:06,823 INFO L78 Accepts]: Start accepts. Automaton has 10626 states and 17293 transitions. Word has length 170 [2021-12-21 12:54:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:06,824 INFO L470 AbstractCegarLoop]: Abstraction has 10626 states and 17293 transitions. [2021-12-21 12:54:06,824 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 12:54:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 10626 states and 17293 transitions. [2021-12-21 12:54:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-21 12:54:06,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:06,826 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 12:54:06,846 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 12:54:07,030 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 12:54:07,031 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:07,031 INFO L85 PathProgramCache]: Analyzing trace with hash -35438746, now seen corresponding path program 1 times [2021-12-21 12:54:07,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:07,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882831840] [2021-12-21 12:54:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:07,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:54:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:54:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:54:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:54:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:54:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 12:54:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 12:54:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:54:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:54:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 12:54:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 12:54:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-21 12:54:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,248 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 12:54:07,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:07,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882831840] [2021-12-21 12:54:07,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882831840] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:07,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135018929] [2021-12-21 12:54:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:07,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:07,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:07,250 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 12:54:07,251 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 12:54:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:07,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 12:54:07,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:07,649 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 12:54:07,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:07,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135018929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:07,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:07,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-21 12:54:07,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612432447] [2021-12-21 12:54:07,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:07,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:07,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:07,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:07,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:54:07,650 INFO L87 Difference]: Start difference. First operand 10626 states and 17293 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)