./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec14_product28.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_spec14_product28.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 da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:54:08,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:54:08,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:54:08,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:54:08,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:54:08,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:54:08,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:54:08,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:54:08,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:54:08,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:54:08,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:54:08,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:54:08,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:54:08,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:54:08,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:54:08,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:54:08,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:54:08,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:54:08,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:54:08,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:54:08,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:54:08,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:54:08,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:54:08,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:54:08,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:54:08,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:54:08,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:54:08,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:54:08,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:54:08,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:54:08,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:54:08,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:54:08,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:54:08,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:54:08,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:54:08,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:54:08,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:54:08,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:54:08,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:54:08,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:54:08,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:54:08,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:54:08,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:54:08,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:54:08,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:54:08,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:54:08,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:54:08,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:54:08,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:54:08,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:54:08,141 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:54:08,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:54:08,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:54:08,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:54:08,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:54:08,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:54:08,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:54:08,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:54:08,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:54:08,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:54:08,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:54:08,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:54:08,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:54:08,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:54:08,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:54:08,144 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:54:08,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:54:08,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:54:08,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:54:08,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da76b57a1451220816a27c40b8cda655a945b2081fe69d46a431c484896fab87 [2021-12-21 12:54:08,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:54:08,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:54:08,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:54:08,356 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:54:08,356 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:54:08,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2021-12-21 12:54:08,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ae4a14c/3903ca95b349402f804e015834c152c2/FLAGa999135cd [2021-12-21 12:54:08,883 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:54:08,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product28.cil.c [2021-12-21 12:54:08,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ae4a14c/3903ca95b349402f804e015834c152c2/FLAGa999135cd [2021-12-21 12:54:08,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ae4a14c/3903ca95b349402f804e015834c152c2 [2021-12-21 12:54:08,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:54:08,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:54:08,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:54:08,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:54:08,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:54:08,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:54:08" (1/1) ... [2021-12-21 12:54:08,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67cbaae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:08, skipping insertion in model container [2021-12-21 12:54:08,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:54:08" (1/1) ... [2021-12-21 12:54:08,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:54:08,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:54:09,470 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_spec14_product28.cil.c[43703,43716] [2021-12-21 12:54:09,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:54:09,533 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:54:09,593 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_spec14_product28.cil.c[43703,43716] [2021-12-21 12:54:09,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:54:09,662 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:54:09,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09 WrapperNode [2021-12-21 12:54:09,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:54:09,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:54:09,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:54:09,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:54:09,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,770 INFO L137 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1104 [2021-12-21 12:54:09,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:54:09,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:54:09,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:54:09,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:54:09,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:54:09,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:54:09,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:54:09,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:54:09,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (1/1) ... [2021-12-21 12:54:09,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:54:09,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:09,909 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 12:54:09,929 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 12:54:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:54:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-21 12:54:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-21 12:54:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-21 12:54:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-21 12:54:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-21 12:54:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-21 12:54:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-12-21 12:54:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-12-21 12:54:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-21 12:54:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-21 12:54:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-21 12:54:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-21 12:54:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-21 12:54:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-21 12:54:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 12:54:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 12:54:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 12:54:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 12:54:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-21 12:54:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-21 12:54:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-21 12:54:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-21 12:54:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-21 12:54:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-21 12:54:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-21 12:54:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-21 12:54:09,943 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-21 12:54:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-21 12:54:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-21 12:54:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-21 12:54:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-12-21 12:54:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-12-21 12:54:09,944 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-21 12:54:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-21 12:54:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-21 12:54:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-21 12:54:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-21 12:54:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-21 12:54:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-21 12:54:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-21 12:54:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:54:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-21 12:54:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-21 12:54:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-21 12:54:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-21 12:54:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-21 12:54:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-21 12:54:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:54:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:54:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-21 12:54:09,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-21 12:54:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-12-21 12:54:09,948 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-12-21 12:54:10,078 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:54:10,079 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:54:10,751 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:54:10,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:54:10,766 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:54:10,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:54:10 BoogieIcfgContainer [2021-12-21 12:54:10,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:54:10,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:54:10,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:54:10,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:54:10,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:54:08" (1/3) ... [2021-12-21 12:54:10,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d984d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:54:10, skipping insertion in model container [2021-12-21 12:54:10,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:54:09" (2/3) ... [2021-12-21 12:54:10,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d984d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:54:10, skipping insertion in model container [2021-12-21 12:54:10,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:54:10" (3/3) ... [2021-12-21 12:54:10,780 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2021-12-21 12:54:10,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:54:10,786 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:54:10,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:54:10,824 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 12:54:10,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:54:10,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 430 states have (on average 1.672093023255814) internal successors, (719), 448 states have internal predecessors, (719), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 12:54:10,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-21 12:54:10,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:10,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:10,881 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash 861521184, now seen corresponding path program 1 times [2021-12-21 12:54:10,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:10,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19421576] [2021-12-21 12:54:10,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:10,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:54:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 12:54:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:54:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:54:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:11,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:11,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19421576] [2021-12-21 12:54:11,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19421576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:11,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:11,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:11,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944342191] [2021-12-21 12:54:11,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:11,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:11,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:11,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:11,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:11,341 INFO L87 Difference]: Start difference. First operand has 554 states, 430 states have (on average 1.672093023255814) internal successors, (719), 448 states have internal predecessors, (719), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:13,369 INFO L93 Difference]: Finished difference Result 1224 states and 2043 transitions. [2021-12-21 12:54:13,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2021-12-21 12:54:13,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:13,394 INFO L225 Difference]: With dead ends: 1224 [2021-12-21 12:54:13,394 INFO L226 Difference]: Without dead ends: 670 [2021-12-21 12:54:13,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:54:13,405 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 646 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:13,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 2100 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 12:54:13,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-21 12:54:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2021-12-21 12:54:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6619718309859155) internal successors, (708), 443 states have internal predecessors, (708), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 901 transitions. [2021-12-21 12:54:13,493 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 901 transitions. Word has length 63 [2021-12-21 12:54:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:13,493 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 901 transitions. [2021-12-21 12:54:13,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:13,493 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 901 transitions. [2021-12-21 12:54:13,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 12:54:13,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:13,496 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:13,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:54:13,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:13,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:13,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2026902989, now seen corresponding path program 1 times [2021-12-21 12:54:13,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:13,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889024669] [2021-12-21 12:54:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:13,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 12:54:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 12:54:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:54:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 12:54:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:13,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:13,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889024669] [2021-12-21 12:54:13,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889024669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:13,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:13,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:13,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841467532] [2021-12-21 12:54:13,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:13,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:13,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:13,619 INFO L87 Difference]: Start difference. First operand 549 states and 901 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:15,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:15,439 INFO L93 Difference]: Finished difference Result 1202 states and 1987 transitions. [2021-12-21 12:54:15,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:15,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2021-12-21 12:54:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:15,445 INFO L225 Difference]: With dead ends: 1202 [2021-12-21 12:54:15,445 INFO L226 Difference]: Without dead ends: 670 [2021-12-21 12:54:15,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:15,449 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 638 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:15,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 2183 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 12:54:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-21 12:54:15,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2021-12-21 12:54:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.65962441314554) internal successors, (707), 443 states have internal predecessors, (707), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:15,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 900 transitions. [2021-12-21 12:54:15,484 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 900 transitions. Word has length 64 [2021-12-21 12:54:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:15,484 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 900 transitions. [2021-12-21 12:54:15,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 900 transitions. [2021-12-21 12:54:15,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 12:54:15,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:15,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:15,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:54:15,487 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:15,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1702940924, now seen corresponding path program 1 times [2021-12-21 12:54:15,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:15,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158173512] [2021-12-21 12:54:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:15,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:54:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 12:54:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:54:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:54:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:54:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:15,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:15,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158173512] [2021-12-21 12:54:15,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158173512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:15,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:15,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:15,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224051592] [2021-12-21 12:54:15,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:15,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:15,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:15,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:15,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:15,598 INFO L87 Difference]: Start difference. First operand 549 states and 900 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:17,491 INFO L93 Difference]: Finished difference Result 1202 states and 1986 transitions. [2021-12-21 12:54:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2021-12-21 12:54:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:17,496 INFO L225 Difference]: With dead ends: 1202 [2021-12-21 12:54:17,496 INFO L226 Difference]: Without dead ends: 670 [2021-12-21 12:54:17,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:17,499 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 635 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:17,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 2058 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 12:54:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-21 12:54:17,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2021-12-21 12:54:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6572769953051643) internal successors, (706), 443 states have internal predecessors, (706), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:17,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 899 transitions. [2021-12-21 12:54:17,540 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 899 transitions. Word has length 65 [2021-12-21 12:54:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:17,541 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 899 transitions. [2021-12-21 12:54:17,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 899 transitions. [2021-12-21 12:54:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 12:54:17,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:17,545 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:17,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:54:17,545 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash 145697999, now seen corresponding path program 1 times [2021-12-21 12:54:17,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:17,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352821490] [2021-12-21 12:54:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:17,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 12:54:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 12:54:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 12:54:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 12:54:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:54:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:17,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:17,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352821490] [2021-12-21 12:54:17,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352821490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:17,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:17,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:17,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576881916] [2021-12-21 12:54:17,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:17,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:17,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:17,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:17,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:17,711 INFO L87 Difference]: Start difference. First operand 549 states and 899 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:19,696 INFO L93 Difference]: Finished difference Result 1202 states and 1985 transitions. [2021-12-21 12:54:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2021-12-21 12:54:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:19,700 INFO L225 Difference]: With dead ends: 1202 [2021-12-21 12:54:19,700 INFO L226 Difference]: Without dead ends: 670 [2021-12-21 12:54:19,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:19,703 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 632 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:19,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 2184 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 12:54:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-21 12:54:19,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2021-12-21 12:54:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6549295774647887) internal successors, (705), 443 states have internal predecessors, (705), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 898 transitions. [2021-12-21 12:54:19,726 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 898 transitions. Word has length 66 [2021-12-21 12:54:19,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:19,726 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 898 transitions. [2021-12-21 12:54:19,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 898 transitions. [2021-12-21 12:54:19,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-21 12:54:19,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:19,727 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:19,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:54:19,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:19,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:19,728 INFO L85 PathProgramCache]: Analyzing trace with hash -2102479656, now seen corresponding path program 1 times [2021-12-21 12:54:19,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:19,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571526800] [2021-12-21 12:54:19,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:19,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 12:54:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 12:54:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:54:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:54:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:19,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:19,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571526800] [2021-12-21 12:54:19,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571526800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:19,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:19,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:19,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673220660] [2021-12-21 12:54:19,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:19,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:19,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:19,844 INFO L87 Difference]: Start difference. First operand 549 states and 898 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:21,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:21,526 INFO L93 Difference]: Finished difference Result 1202 states and 1984 transitions. [2021-12-21 12:54:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2021-12-21 12:54:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:21,530 INFO L225 Difference]: With dead ends: 1202 [2021-12-21 12:54:21,530 INFO L226 Difference]: Without dead ends: 670 [2021-12-21 12:54:21,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:21,538 INFO L933 BasicCegarLoop]: 918 mSDtfsCounter, 629 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:21,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 2180 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 12:54:21,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-21 12:54:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 549. [2021-12-21 12:54:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6525821596244132) internal successors, (704), 443 states have internal predecessors, (704), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 897 transitions. [2021-12-21 12:54:21,562 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 897 transitions. Word has length 67 [2021-12-21 12:54:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:21,563 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 897 transitions. [2021-12-21 12:54:21,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 897 transitions. [2021-12-21 12:54:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-21 12:54:21,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:21,565 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:21,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 12:54:21,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 169835, now seen corresponding path program 1 times [2021-12-21 12:54:21,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:21,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321861687] [2021-12-21 12:54:21,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:21,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 12:54:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 12:54:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 12:54:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:54:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:21,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:21,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321861687] [2021-12-21 12:54:21,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321861687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:21,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:21,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:54:21,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115725230] [2021-12-21 12:54:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:21,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:54:21,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:21,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:54:21,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:21,723 INFO L87 Difference]: Start difference. First operand 549 states and 897 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:24,011 INFO L93 Difference]: Finished difference Result 1227 states and 2028 transitions. [2021-12-21 12:54:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 12:54:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2021-12-21 12:54:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:24,015 INFO L225 Difference]: With dead ends: 1227 [2021-12-21 12:54:24,015 INFO L226 Difference]: Without dead ends: 699 [2021-12-21 12:54:24,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:54:24,018 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 716 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:24,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 3025 Invalid, 2620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [181 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:54:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-21 12:54:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2021-12-21 12:54:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6471910112359551) internal successors, (733), 462 states have internal predecessors, (733), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 926 transitions. [2021-12-21 12:54:24,042 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 926 transitions. Word has length 68 [2021-12-21 12:54:24,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:24,043 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 926 transitions. [2021-12-21 12:54:24,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:24,043 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 926 transitions. [2021-12-21 12:54:24,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 12:54:24,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:24,044 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:24,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 12:54:24,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:24,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1006007257, now seen corresponding path program 1 times [2021-12-21 12:54:24,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:24,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408445942] [2021-12-21 12:54:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:24,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-21 12:54:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:54:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 12:54:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 12:54:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:24,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:24,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408445942] [2021-12-21 12:54:24,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408445942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:24,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:24,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:54:24,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078126823] [2021-12-21 12:54:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:24,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:54:24,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:54:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:24,175 INFO L87 Difference]: Start difference. First operand 569 states and 926 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:26,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:26,294 INFO L93 Difference]: Finished difference Result 1211 states and 1979 transitions. [2021-12-21 12:54:26,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:54:26,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2021-12-21 12:54:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:26,298 INFO L225 Difference]: With dead ends: 1211 [2021-12-21 12:54:26,299 INFO L226 Difference]: Without dead ends: 699 [2021-12-21 12:54:26,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:54:26,303 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 691 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:26,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 3002 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:54:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-21 12:54:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2021-12-21 12:54:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6359550561797753) internal successors, (728), 462 states have internal predecessors, (728), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:26,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 921 transitions. [2021-12-21 12:54:26,332 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 921 transitions. Word has length 69 [2021-12-21 12:54:26,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:26,333 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 921 transitions. [2021-12-21 12:54:26,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:26,333 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 921 transitions. [2021-12-21 12:54:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-21 12:54:26,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:26,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:26,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 12:54:26,339 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:26,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2086538832, now seen corresponding path program 1 times [2021-12-21 12:54:26,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:26,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644078480] [2021-12-21 12:54:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:26,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 12:54:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 12:54:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 12:54:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 12:54:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:26,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:26,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644078480] [2021-12-21 12:54:26,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644078480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:26,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:26,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:54:26,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201360381] [2021-12-21 12:54:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:26,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:54:26,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:54:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:26,510 INFO L87 Difference]: Start difference. First operand 569 states and 921 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:28,557 INFO L93 Difference]: Finished difference Result 1211 states and 1974 transitions. [2021-12-21 12:54:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:54:28,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2021-12-21 12:54:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:28,560 INFO L225 Difference]: With dead ends: 1211 [2021-12-21 12:54:28,560 INFO L226 Difference]: Without dead ends: 699 [2021-12-21 12:54:28,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:54:28,563 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 690 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:28,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 3002 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 12:54:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-21 12:54:28,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2021-12-21 12:54:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6247191011235955) internal successors, (723), 462 states have internal predecessors, (723), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 916 transitions. [2021-12-21 12:54:28,585 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 916 transitions. Word has length 70 [2021-12-21 12:54:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:28,585 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 916 transitions. [2021-12-21 12:54:28,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 916 transitions. [2021-12-21 12:54:28,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 12:54:28,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:28,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:28,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 12:54:28,587 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:28,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:28,587 INFO L85 PathProgramCache]: Analyzing trace with hash 915012414, now seen corresponding path program 1 times [2021-12-21 12:54:28,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:28,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538937136] [2021-12-21 12:54:28,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:28,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 12:54:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:54:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:54:28,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:28,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:28,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538937136] [2021-12-21 12:54:28,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538937136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:28,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:28,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:54:28,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752122158] [2021-12-21 12:54:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:28,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:54:28,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:54:28,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:28,717 INFO L87 Difference]: Start difference. First operand 569 states and 916 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:30,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:30,847 INFO L93 Difference]: Finished difference Result 1211 states and 1969 transitions. [2021-12-21 12:54:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:54:30,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-12-21 12:54:30,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:30,851 INFO L225 Difference]: With dead ends: 1211 [2021-12-21 12:54:30,851 INFO L226 Difference]: Without dead ends: 699 [2021-12-21 12:54:30,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:54:30,854 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 689 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:30,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 3008 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 12:54:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-12-21 12:54:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 569. [2021-12-21 12:54:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 445 states have (on average 1.6134831460674157) internal successors, (718), 462 states have internal predecessors, (718), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 911 transitions. [2021-12-21 12:54:30,896 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 911 transitions. Word has length 71 [2021-12-21 12:54:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:30,897 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 911 transitions. [2021-12-21 12:54:30,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 911 transitions. [2021-12-21 12:54:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-21 12:54:30,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:30,898 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:30,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 12:54:30,898 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:30,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2064383585, now seen corresponding path program 1 times [2021-12-21 12:54:30,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:30,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721461536] [2021-12-21 12:54:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:30,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 12:54:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:31,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:54:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 12:54:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 12:54:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:31,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:31,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721461536] [2021-12-21 12:54:31,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721461536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:31,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:31,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:31,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774604163] [2021-12-21 12:54:31,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:31,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:31,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:31,014 INFO L87 Difference]: Start difference. First operand 569 states and 911 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:32,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:32,865 INFO L93 Difference]: Finished difference Result 1238 states and 2003 transitions. [2021-12-21 12:54:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:54:32,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2021-12-21 12:54:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:32,869 INFO L225 Difference]: With dead ends: 1238 [2021-12-21 12:54:32,869 INFO L226 Difference]: Without dead ends: 732 [2021-12-21 12:54:32,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:54:32,871 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 692 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:32,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 2029 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 12:54:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-21 12:54:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 573. [2021-12-21 12:54:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.6080178173719377) internal successors, (722), 466 states have internal predecessors, (722), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 915 transitions. [2021-12-21 12:54:32,893 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 915 transitions. Word has length 71 [2021-12-21 12:54:32,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:32,893 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 915 transitions. [2021-12-21 12:54:32,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 915 transitions. [2021-12-21 12:54:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 12:54:32,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:32,894 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:32,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 12:54:32,894 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash -439947275, now seen corresponding path program 1 times [2021-12-21 12:54:32,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:32,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769536674] [2021-12-21 12:54:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:32,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:54:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 12:54:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:54:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:54:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:33,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:33,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769536674] [2021-12-21 12:54:33,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769536674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:33,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:33,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:54:33,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875892383] [2021-12-21 12:54:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:33,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:54:33,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:54:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:54:33,018 INFO L87 Difference]: Start difference. First operand 573 states and 915 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:35,104 INFO L93 Difference]: Finished difference Result 1221 states and 1973 transitions. [2021-12-21 12:54:35,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:54:35,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2021-12-21 12:54:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:35,108 INFO L225 Difference]: With dead ends: 1221 [2021-12-21 12:54:35,108 INFO L226 Difference]: Without dead ends: 705 [2021-12-21 12:54:35,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:54:35,110 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 688 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 2502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:35,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 3002 Invalid, 2502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 12:54:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-12-21 12:54:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 573. [2021-12-21 12:54:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 449 states have (on average 1.5968819599109132) internal successors, (717), 466 states have internal predecessors, (717), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 910 transitions. [2021-12-21 12:54:35,132 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 910 transitions. Word has length 72 [2021-12-21 12:54:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:35,132 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 910 transitions. [2021-12-21 12:54:35,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 910 transitions. [2021-12-21 12:54:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 12:54:35,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:35,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:35,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 12:54:35,134 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1955223986, now seen corresponding path program 1 times [2021-12-21 12:54:35,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:35,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909987236] [2021-12-21 12:54:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:35,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 12:54:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 12:54:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 12:54:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 12:54:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:35,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:35,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909987236] [2021-12-21 12:54:35,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909987236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:35,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:35,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:35,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752586463] [2021-12-21 12:54:35,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:35,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:35,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:35,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:35,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:35,278 INFO L87 Difference]: Start difference. First operand 573 states and 910 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:37,250 INFO L93 Difference]: Finished difference Result 1246 states and 2002 transitions. [2021-12-21 12:54:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:54:37,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2021-12-21 12:54:37,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:37,277 INFO L225 Difference]: With dead ends: 1246 [2021-12-21 12:54:37,277 INFO L226 Difference]: Without dead ends: 738 [2021-12-21 12:54:37,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:54:37,280 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 695 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:37,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 2002 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 12:54:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-12-21 12:54:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 579. [2021-12-21 12:54:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 455 states have (on average 1.589010989010989) internal successors, (723), 472 states have internal predecessors, (723), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:37,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 916 transitions. [2021-12-21 12:54:37,330 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 916 transitions. Word has length 72 [2021-12-21 12:54:37,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:37,330 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 916 transitions. [2021-12-21 12:54:37,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:37,331 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 916 transitions. [2021-12-21 12:54:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 12:54:37,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:37,331 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:37,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 12:54:37,332 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 592207523, now seen corresponding path program 1 times [2021-12-21 12:54:37,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:37,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078753986] [2021-12-21 12:54:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:37,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:54:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:54:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:54:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:37,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:37,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078753986] [2021-12-21 12:54:37,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078753986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:37,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:37,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 12:54:37,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315413900] [2021-12-21 12:54:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:37,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 12:54:37,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 12:54:37,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:54:37,585 INFO L87 Difference]: Start difference. First operand 579 states and 916 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:54:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:39,587 INFO L93 Difference]: Finished difference Result 1251 states and 2005 transitions. [2021-12-21 12:54:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 12:54:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2021-12-21 12:54:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:39,591 INFO L225 Difference]: With dead ends: 1251 [2021-12-21 12:54:39,591 INFO L226 Difference]: Without dead ends: 743 [2021-12-21 12:54:39,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-21 12:54:39,593 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 717 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 4735 SdHoareTripleChecker+Invalid, 3872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:39,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 4735 Invalid, 3872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 3727 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 12:54:39,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-12-21 12:54:39,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 590. [2021-12-21 12:54:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.5853131749460043) internal successors, (734), 482 states have internal predecessors, (734), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2021-12-21 12:54:39,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 931 transitions. [2021-12-21 12:54:39,635 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 931 transitions. Word has length 73 [2021-12-21 12:54:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:39,635 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 931 transitions. [2021-12-21 12:54:39,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:54:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 931 transitions. [2021-12-21 12:54:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 12:54:39,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:39,637 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:39,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 12:54:39,637 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:39,637 INFO L85 PathProgramCache]: Analyzing trace with hash -234476092, now seen corresponding path program 1 times [2021-12-21 12:54:39,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:39,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493396143] [2021-12-21 12:54:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:39,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:54:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:54:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:54:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:39,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:39,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493396143] [2021-12-21 12:54:39,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493396143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:39,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:39,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:39,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450493425] [2021-12-21 12:54:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:39,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:39,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:39,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:39,758 INFO L87 Difference]: Start difference. First operand 590 states and 931 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:41,459 INFO L93 Difference]: Finished difference Result 1279 states and 2043 transitions. [2021-12-21 12:54:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:54:41,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2021-12-21 12:54:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:41,462 INFO L225 Difference]: With dead ends: 1279 [2021-12-21 12:54:41,462 INFO L226 Difference]: Without dead ends: 765 [2021-12-21 12:54:41,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:54:41,464 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 691 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:41,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 2012 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 12:54:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-12-21 12:54:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 598. [2021-12-21 12:54:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 471 states have (on average 1.5732484076433122) internal successors, (741), 490 states have internal predecessors, (741), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (99), 94 states have call predecessors, (99), 97 states have call successors, (99) [2021-12-21 12:54:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 938 transitions. [2021-12-21 12:54:41,489 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 938 transitions. Word has length 73 [2021-12-21 12:54:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:41,490 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 938 transitions. [2021-12-21 12:54:41,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:41,490 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 938 transitions. [2021-12-21 12:54:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 12:54:41,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:41,492 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:41,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 12:54:41,492 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:41,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1222666148, now seen corresponding path program 1 times [2021-12-21 12:54:41,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:41,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574260656] [2021-12-21 12:54:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:41,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 12:54:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:54:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 12:54:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 12:54:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:41,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:41,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:41,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574260656] [2021-12-21 12:54:41,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574260656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:41,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:41,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:41,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395295557] [2021-12-21 12:54:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:41,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:41,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:41,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:41,609 INFO L87 Difference]: Start difference. First operand 598 states and 938 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:42,937 INFO L93 Difference]: Finished difference Result 1317 states and 2081 transitions. [2021-12-21 12:54:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:42,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2021-12-21 12:54:42,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:42,942 INFO L225 Difference]: With dead ends: 1317 [2021-12-21 12:54:42,942 INFO L226 Difference]: Without dead ends: 716 [2021-12-21 12:54:42,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:54:42,943 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 629 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:42,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 2116 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 12:54:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-12-21 12:54:42,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 579. [2021-12-21 12:54:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 455 states have (on average 1.578021978021978) internal successors, (718), 472 states have internal predecessors, (718), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 911 transitions. [2021-12-21 12:54:42,964 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 911 transitions. Word has length 73 [2021-12-21 12:54:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:42,965 INFO L470 AbstractCegarLoop]: Abstraction has 579 states and 911 transitions. [2021-12-21 12:54:42,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 911 transitions. [2021-12-21 12:54:42,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 12:54:42,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:42,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:42,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 12:54:42,966 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:42,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1639184969, now seen corresponding path program 1 times [2021-12-21 12:54:42,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:42,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835058056] [2021-12-21 12:54:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:42,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 12:54:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 12:54:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 12:54:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:43,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:43,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835058056] [2021-12-21 12:54:43,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835058056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:43,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:43,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 12:54:43,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753941555] [2021-12-21 12:54:43,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:43,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:43,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:43,072 INFO L87 Difference]: Start difference. First operand 579 states and 911 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:44,579 INFO L93 Difference]: Finished difference Result 1264 states and 2006 transitions. [2021-12-21 12:54:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:54:44,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2021-12-21 12:54:44,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:44,582 INFO L225 Difference]: With dead ends: 1264 [2021-12-21 12:54:44,582 INFO L226 Difference]: Without dead ends: 749 [2021-12-21 12:54:44,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:54:44,585 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 673 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1236 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:44,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 2002 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1236 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 12:54:44,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-12-21 12:54:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 589. [2021-12-21 12:54:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 465 states have (on average 1.5655913978494624) internal successors, (728), 482 states have internal predecessors, (728), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2021-12-21 12:54:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 921 transitions. [2021-12-21 12:54:44,606 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 921 transitions. Word has length 74 [2021-12-21 12:54:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:44,606 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 921 transitions. [2021-12-21 12:54:44,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 12:54:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 921 transitions. [2021-12-21 12:54:44,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-21 12:54:44,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:44,607 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:54:44,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 12:54:44,608 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash 102707193, now seen corresponding path program 1 times [2021-12-21 12:54:44,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:44,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567239047] [2021-12-21 12:54:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:44,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:54:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 12:54:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 12:54:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 12:54:44,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:44,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567239047] [2021-12-21 12:54:44,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567239047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:44,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:54:44,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 12:54:44,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331948414] [2021-12-21 12:54:44,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:44,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:54:44,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:54:44,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 12:54:44,713 INFO L87 Difference]: Start difference. First operand 589 states and 921 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:54:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:46,646 INFO L93 Difference]: Finished difference Result 1842 states and 2964 transitions. [2021-12-21 12:54:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:54:46,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2021-12-21 12:54:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:46,653 INFO L225 Difference]: With dead ends: 1842 [2021-12-21 12:54:46,653 INFO L226 Difference]: Without dead ends: 1329 [2021-12-21 12:54:46,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:54:46,656 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 1841 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:46,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1939 Valid, 1591 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 12:54:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-12-21 12:54:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1026. [2021-12-21 12:54:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 810 states have (on average 1.5901234567901235) internal successors, (1288), 836 states have internal predecessors, (1288), 170 states have call successors, (170), 47 states have call predecessors, (170), 45 states have return successors, (175), 157 states have call predecessors, (175), 168 states have call successors, (175) [2021-12-21 12:54:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1633 transitions. [2021-12-21 12:54:46,736 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1633 transitions. Word has length 75 [2021-12-21 12:54:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:46,736 INFO L470 AbstractCegarLoop]: Abstraction has 1026 states and 1633 transitions. [2021-12-21 12:54:46,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 12:54:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1633 transitions. [2021-12-21 12:54:46,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 12:54:46,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:46,739 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 12:54:46,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 12:54:46,739 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1304070991, now seen corresponding path program 1 times [2021-12-21 12:54:46,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:46,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972890776] [2021-12-21 12:54:46,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:46,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:54:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:54:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:54:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 12:54:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:54:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 12:54:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 12:54:47,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:47,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972890776] [2021-12-21 12:54:47,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972890776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:47,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912347678] [2021-12-21 12:54:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:47,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:47,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:47,116 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 12:54:47,163 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 12:54:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:47,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 12:54:47,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 12:54:47,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:47,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912347678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:47,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:47,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2021-12-21 12:54:47,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735415555] [2021-12-21 12:54:47,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:47,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 12:54:47,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 12:54:47,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:54:47,589 INFO L87 Difference]: Start difference. First operand 1026 states and 1633 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:47,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:47,692 INFO L93 Difference]: Finished difference Result 2914 states and 4759 transitions. [2021-12-21 12:54:47,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 12:54:47,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2021-12-21 12:54:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:47,700 INFO L225 Difference]: With dead ends: 2914 [2021-12-21 12:54:47,700 INFO L226 Difference]: Without dead ends: 1965 [2021-12-21 12:54:47,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:54:47,703 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 867 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:47,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1789 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:54:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2021-12-21 12:54:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1953. [2021-12-21 12:54:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1953 states, 1538 states have (on average 1.605331599479844) internal successors, (2469), 1587 states have internal predecessors, (2469), 327 states have call successors, (327), 89 states have call predecessors, (327), 87 states have return successors, (366), 306 states have call predecessors, (366), 323 states have call successors, (366) [2021-12-21 12:54:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3162 transitions. [2021-12-21 12:54:47,787 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3162 transitions. Word has length 128 [2021-12-21 12:54:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:47,787 INFO L470 AbstractCegarLoop]: Abstraction has 1953 states and 3162 transitions. [2021-12-21 12:54:47,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3162 transitions. [2021-12-21 12:54:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-21 12:54:47,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:47,790 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 12:54:47,824 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 12:54:48,006 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,SelfDestructingSolverStorable17 [2021-12-21 12:54:48,007 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:48,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1578830605, now seen corresponding path program 1 times [2021-12-21 12:54:48,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:48,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142848088] [2021-12-21 12:54:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:48,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 12:54:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 12:54:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 12:54:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 12:54:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 12:54:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 12:54:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 12:54:48,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:48,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142848088] [2021-12-21 12:54:48,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142848088] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:48,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400930324] [2021-12-21 12:54:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:48,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:48,366 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 12:54:48,367 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 12:54:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:48,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:48,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 12:54:48,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:48,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400930324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:48,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:48,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2021-12-21 12:54:48,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609028855] [2021-12-21 12:54:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:48,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:48,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:54:48,860 INFO L87 Difference]: Start difference. First operand 1953 states and 3162 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:49,292 INFO L93 Difference]: Finished difference Result 3862 states and 6413 transitions. [2021-12-21 12:54:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2021-12-21 12:54:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:49,300 INFO L225 Difference]: With dead ends: 3862 [2021-12-21 12:54:49,300 INFO L226 Difference]: Without dead ends: 1985 [2021-12-21 12:54:49,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:54:49,307 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 819 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:49,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2148 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-12-21 12:54:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1985. [2021-12-21 12:54:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1566 states have (on average 1.60727969348659) internal successors, (2517), 1615 states have internal predecessors, (2517), 327 states have call successors, (327), 93 states have call predecessors, (327), 91 states have return successors, (370), 306 states have call predecessors, (370), 323 states have call successors, (370) [2021-12-21 12:54:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 3214 transitions. [2021-12-21 12:54:49,395 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 3214 transitions. Word has length 128 [2021-12-21 12:54:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:49,395 INFO L470 AbstractCegarLoop]: Abstraction has 1985 states and 3214 transitions. [2021-12-21 12:54:49,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 3214 transitions. [2021-12-21 12:54:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-21 12:54:49,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:49,398 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:54:49,416 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 12:54:49,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:49,616 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash 187101277, now seen corresponding path program 1 times [2021-12-21 12:54:49,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:49,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640623938] [2021-12-21 12:54:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:49,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 12:54:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 12:54:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 12:54:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 12:54:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:54:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 12:54:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-21 12:54:49,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:49,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640623938] [2021-12-21 12:54:49,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640623938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:49,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594248294] [2021-12-21 12:54:49,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:49,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:49,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:49,940 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 12:54:49,941 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 12:54:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:50,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:50,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-21 12:54:50,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:50,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594248294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:50,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:50,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2021-12-21 12:54:50,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136749324] [2021-12-21 12:54:50,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:50,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:50,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:54:50,389 INFO L87 Difference]: Start difference. First operand 1985 states and 3214 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:50,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:50,880 INFO L93 Difference]: Finished difference Result 3926 states and 6505 transitions. [2021-12-21 12:54:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:50,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2021-12-21 12:54:50,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:50,898 INFO L225 Difference]: With dead ends: 3926 [2021-12-21 12:54:50,898 INFO L226 Difference]: Without dead ends: 2017 [2021-12-21 12:54:50,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:54:50,918 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 800 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:50,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 2148 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2021-12-21 12:54:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 2017. [2021-12-21 12:54:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2017 states, 1594 states have (on average 1.609159347553325) internal successors, (2565), 1643 states have internal predecessors, (2565), 327 states have call successors, (327), 97 states have call predecessors, (327), 95 states have return successors, (374), 306 states have call predecessors, (374), 323 states have call successors, (374) [2021-12-21 12:54:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 3266 transitions. [2021-12-21 12:54:51,104 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 3266 transitions. Word has length 131 [2021-12-21 12:54:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:51,104 INFO L470 AbstractCegarLoop]: Abstraction has 2017 states and 3266 transitions. [2021-12-21 12:54:51,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 3266 transitions. [2021-12-21 12:54:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-21 12:54:51,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:51,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 12:54:51,145 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 12:54:51,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:51,340 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -488725832, now seen corresponding path program 1 times [2021-12-21 12:54:51,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:51,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008206087] [2021-12-21 12:54:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:51,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:54:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:54:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 12:54:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:54:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 12:54:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 12:54:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:54:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-21 12:54:51,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:51,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008206087] [2021-12-21 12:54:51,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008206087] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:51,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009061668] [2021-12-21 12:54:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:51,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:51,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:51,652 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 12:54:51,654 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 12:54:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:51,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:54:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-21 12:54:52,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:52,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009061668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:52,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:52,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2021-12-21 12:54:52,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402781515] [2021-12-21 12:54:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:52,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:54:52,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:54:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:54:52,046 INFO L87 Difference]: Start difference. First operand 2017 states and 3266 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 12:54:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:52,655 INFO L93 Difference]: Finished difference Result 5230 states and 8470 transitions. [2021-12-21 12:54:52,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:54:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-21 12:54:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:52,668 INFO L225 Difference]: With dead ends: 5230 [2021-12-21 12:54:52,668 INFO L226 Difference]: Without dead ends: 3289 [2021-12-21 12:54:52,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:54:52,677 INFO L933 BasicCegarLoop]: 1171 mSDtfsCounter, 849 mSDsluCounter, 3720 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 4891 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:52,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 4891 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 12:54:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-21 12:54:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3283. [2021-12-21 12:54:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3283 states, 2586 states have (on average 1.5680587780355761) internal successors, (4055), 2639 states have internal predecessors, (4055), 525 states have call successors, (525), 167 states have call predecessors, (525), 171 states have return successors, (672), 508 states have call predecessors, (672), 517 states have call successors, (672) [2021-12-21 12:54:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 5252 transitions. [2021-12-21 12:54:52,825 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 5252 transitions. Word has length 133 [2021-12-21 12:54:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:52,825 INFO L470 AbstractCegarLoop]: Abstraction has 3283 states and 5252 transitions. [2021-12-21 12:54:52,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 12:54:52,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 5252 transitions. [2021-12-21 12:54:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-21 12:54:52,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:52,830 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:54:52,863 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 12:54:53,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:53,044 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2128821267, now seen corresponding path program 1 times [2021-12-21 12:54:53,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:53,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661397134] [2021-12-21 12:54:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:53,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 12:54:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 12:54:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 12:54:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 12:54:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 12:54:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 12:54:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 12:54:53,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661397134] [2021-12-21 12:54:53,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661397134] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:53,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331051699] [2021-12-21 12:54:53,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:53,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:53,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:53,365 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 12:54:53,402 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 12:54:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:53,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:53,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-21 12:54:53,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:53,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331051699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:53,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:53,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2021-12-21 12:54:53,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701744842] [2021-12-21 12:54:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:53,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:53,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:54:53,836 INFO L87 Difference]: Start difference. First operand 3283 states and 5252 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:54,380 INFO L93 Difference]: Finished difference Result 6554 states and 10783 transitions. [2021-12-21 12:54:54,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:54,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2021-12-21 12:54:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:54,397 INFO L225 Difference]: With dead ends: 6554 [2021-12-21 12:54:54,397 INFO L226 Difference]: Without dead ends: 3347 [2021-12-21 12:54:54,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:54:54,412 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 796 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:54,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 2148 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-12-21 12:54:54,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 3347. [2021-12-21 12:54:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3347 states, 2642 states have (on average 1.5711582134746405) internal successors, (4151), 2695 states have internal predecessors, (4151), 525 states have call successors, (525), 175 states have call predecessors, (525), 179 states have return successors, (680), 508 states have call predecessors, (680), 517 states have call successors, (680) [2021-12-21 12:54:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3347 states to 3347 states and 5356 transitions. [2021-12-21 12:54:54,577 INFO L78 Accepts]: Start accepts. Automaton has 3347 states and 5356 transitions. Word has length 134 [2021-12-21 12:54:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:54,578 INFO L470 AbstractCegarLoop]: Abstraction has 3347 states and 5356 transitions. [2021-12-21 12:54:54,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3347 states and 5356 transitions. [2021-12-21 12:54:54,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-21 12:54:54,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:54,586 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:54:54,608 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 12:54:54,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-21 12:54:54,799 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash 385245007, now seen corresponding path program 1 times [2021-12-21 12:54:54,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:54,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989679558] [2021-12-21 12:54:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:54,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:54,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:54,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 12:54:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 12:54:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 12:54:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 12:54:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 12:54:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 12:54:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 12:54:55,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:55,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989679558] [2021-12-21 12:54:55,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989679558] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:55,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603885685] [2021-12-21 12:54:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:55,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:55,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:55,200 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 12:54:55,201 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 12:54:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:55,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 12:54:55,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-21 12:54:55,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:55,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603885685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:55,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:55,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2021-12-21 12:54:55,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404622843] [2021-12-21 12:54:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:55,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:54:55,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:54:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-21 12:54:55,642 INFO L87 Difference]: Start difference. First operand 3347 states and 5356 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:56,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:56,090 INFO L93 Difference]: Finished difference Result 6682 states and 10967 transitions. [2021-12-21 12:54:56,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:56,091 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2021-12-21 12:54:56,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:56,103 INFO L225 Difference]: With dead ends: 6682 [2021-12-21 12:54:56,103 INFO L226 Difference]: Without dead ends: 3411 [2021-12-21 12:54:56,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:54:56,114 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 792 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:56,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 2148 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 12:54:56,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-12-21 12:54:56,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3411. [2021-12-21 12:54:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 2698 states have (on average 1.5741289844329132) internal successors, (4247), 2751 states have internal predecessors, (4247), 525 states have call successors, (525), 183 states have call predecessors, (525), 187 states have return successors, (688), 508 states have call predecessors, (688), 517 states have call successors, (688) [2021-12-21 12:54:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5460 transitions. [2021-12-21 12:54:56,262 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5460 transitions. Word has length 137 [2021-12-21 12:54:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:56,262 INFO L470 AbstractCegarLoop]: Abstraction has 3411 states and 5460 transitions. [2021-12-21 12:54:56,262 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, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 12:54:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5460 transitions. [2021-12-21 12:54:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-21 12:54:56,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:56,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:54:56,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-21 12:54:56,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:56,479 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:56,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash -323803479, now seen corresponding path program 1 times [2021-12-21 12:54:56,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:56,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551778421] [2021-12-21 12:54:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:56,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:54:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:54:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 12:54:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:54:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:54:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 12:54:56,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:56,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551778421] [2021-12-21 12:54:56,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551778421] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:56,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326507413] [2021-12-21 12:54:56,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:56,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:56,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:56,925 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 12:54:56,987 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 12:54:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:57,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 12:54:57,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:54:57,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:57,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326507413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:57,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:57,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2021-12-21 12:54:57,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200773458] [2021-12-21 12:54:57,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:57,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:54:57,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:54:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-12-21 12:54:57,405 INFO L87 Difference]: Start difference. First operand 3411 states and 5460 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-21 12:54:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:54:58,713 INFO L93 Difference]: Finished difference Result 6898 states and 11097 transitions. [2021-12-21 12:54:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:54:58,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 140 [2021-12-21 12:54:58,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:54:58,728 INFO L225 Difference]: With dead ends: 6898 [2021-12-21 12:54:58,729 INFO L226 Difference]: Without dead ends: 3568 [2021-12-21 12:54:58,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2021-12-21 12:54:58,740 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 1472 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:54:58,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 1732 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 12:54:58,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-12-21 12:54:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3298. [2021-12-21 12:54:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 2512 states have (on average 1.543391719745223) internal successors, (3877), 2603 states have internal predecessors, (3877), 606 states have call successors, (606), 169 states have call predecessors, (606), 179 states have return successors, (746), 577 states have call predecessors, (746), 598 states have call successors, (746) [2021-12-21 12:54:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 5229 transitions. [2021-12-21 12:54:58,901 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 5229 transitions. Word has length 140 [2021-12-21 12:54:58,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:54:58,902 INFO L470 AbstractCegarLoop]: Abstraction has 3298 states and 5229 transitions. [2021-12-21 12:54:58,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-21 12:54:58,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 5229 transitions. [2021-12-21 12:54:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-21 12:54:58,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:54:58,905 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:54:58,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-21 12:54:59,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:59,144 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:54:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:54:59,145 INFO L85 PathProgramCache]: Analyzing trace with hash 408163947, now seen corresponding path program 1 times [2021-12-21 12:54:59,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:54:59,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768998504] [2021-12-21 12:54:59,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:59,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:54:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:54:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:54:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:54:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:54:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:54:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:54:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 12:54:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 12:54:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:54:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 12:54:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:54:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,494 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 12:54:59,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:54:59,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768998504] [2021-12-21 12:54:59,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768998504] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:54:59,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931018570] [2021-12-21 12:54:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:54:59,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:54:59,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:54:59,511 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 12:54:59,512 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 12:54:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:54:59,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 12:54:59,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:54:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 12:54:59,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:54:59,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931018570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:54:59,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:54:59,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2021-12-21 12:54:59,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030242970] [2021-12-21 12:54:59,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:54:59,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:54:59,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:54:59,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:54:59,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-12-21 12:54:59,964 INFO L87 Difference]: Start difference. First operand 3298 states and 5229 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2021-12-21 12:55:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:55:02,281 INFO L93 Difference]: Finished difference Result 7639 states and 12220 transitions. [2021-12-21 12:55:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 12:55:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 140 [2021-12-21 12:55:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:55:02,303 INFO L225 Difference]: With dead ends: 7639 [2021-12-21 12:55:02,303 INFO L226 Difference]: Without dead ends: 4419 [2021-12-21 12:55:02,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2021-12-21 12:55:02,315 INFO L933 BasicCegarLoop]: 1164 mSDtfsCounter, 2946 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 12:55:02,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3037 Valid, 3296 Invalid, 4677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 12:55:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4419 states. [2021-12-21 12:55:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4419 to 3824. [2021-12-21 12:55:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3824 states, 2904 states have (on average 1.5457988980716253) internal successors, (4489), 3017 states have internal predecessors, (4489), 696 states have call successors, (696), 191 states have call predecessors, (696), 223 states have return successors, (891), 667 states have call predecessors, (891), 688 states have call successors, (891) [2021-12-21 12:55:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 6076 transitions. [2021-12-21 12:55:02,780 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 6076 transitions. Word has length 140 [2021-12-21 12:55:02,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:55:02,780 INFO L470 AbstractCegarLoop]: Abstraction has 3824 states and 6076 transitions. [2021-12-21 12:55:02,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2021-12-21 12:55:02,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 6076 transitions. [2021-12-21 12:55:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-21 12:55:02,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:55:02,784 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:55:02,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 12:55:02,998 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,SelfDestructingSolverStorable24 [2021-12-21 12:55:02,999 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:55:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:55:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1808790549, now seen corresponding path program 1 times [2021-12-21 12:55:02,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:55:03,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133232058] [2021-12-21 12:55:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:55:03,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:55:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:55:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:55:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:55:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:55:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:55:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:55:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:55:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:55:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 12:55:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 12:55:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 12:55:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-21 12:55:03,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:55:03,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133232058] [2021-12-21 12:55:03,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133232058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:55:03,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981447394] [2021-12-21 12:55:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:55:03,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:55:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:55:03,294 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 12:55:03,295 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 12:55:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:03,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 12:55:03,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:55:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 12:55:03,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:55:03,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981447394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:55:03,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:55:03,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-12-21 12:55:03,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084460381] [2021-12-21 12:55:03,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:55:03,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:55:03,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:55:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:55:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-21 12:55:03,727 INFO L87 Difference]: Start difference. First operand 3824 states and 6076 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-21 12:55:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:55:06,434 INFO L93 Difference]: Finished difference Result 10329 states and 16779 transitions. [2021-12-21 12:55:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 12:55:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 142 [2021-12-21 12:55:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:55:06,462 INFO L225 Difference]: With dead ends: 10329 [2021-12-21 12:55:06,463 INFO L226 Difference]: Without dead ends: 6583 [2021-12-21 12:55:06,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=873, Unknown=0, NotChecked=0, Total=992 [2021-12-21 12:55:06,479 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 2714 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 5380 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2812 SdHoareTripleChecker+Valid, 3331 SdHoareTripleChecker+Invalid, 6174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 5380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:55:06,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2812 Valid, 3331 Invalid, 6174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 5380 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 12:55:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-12-21 12:55:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 5961. [2021-12-21 12:55:06,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 4512 states have (on average 1.551418439716312) internal successors, (7000), 4698 states have internal predecessors, (7000), 1084 states have call successors, (1084), 291 states have call predecessors, (1084), 364 states have return successors, (1508), 1048 states have call predecessors, (1508), 1076 states have call successors, (1508) [2021-12-21 12:55:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 9592 transitions. [2021-12-21 12:55:06,815 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 9592 transitions. Word has length 142 [2021-12-21 12:55:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:55:06,815 INFO L470 AbstractCegarLoop]: Abstraction has 5961 states and 9592 transitions. [2021-12-21 12:55:06,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-21 12:55:06,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 9592 transitions. [2021-12-21 12:55:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 12:55:06,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:55:06,818 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 12:55:06,853 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 12:55:07,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-21 12:55:07,031 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:55:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:55:07,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2003295559, now seen corresponding path program 1 times [2021-12-21 12:55:07,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:55:07,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477055504] [2021-12-21 12:55:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:55:07,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:55:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 12:55:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 12:55:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 12:55:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 12:55:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:55:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:55:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:07,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 12:55:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 12:55:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:55:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 12:55:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 12:55:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 12:55:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 12:55:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:55:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-21 12:55:07,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:55:07,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477055504] [2021-12-21 12:55:07,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477055504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:55:07,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:55:07,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 12:55:07,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627141400] [2021-12-21 12:55:07,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:55:07,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:55:07,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:55:07,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:55:07,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:55:07,293 INFO L87 Difference]: Start difference. First operand 5961 states and 9592 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16)