/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:12:36,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:12:36,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:12:36,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:12:36,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:12:36,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:12:36,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:12:36,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:12:36,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:12:36,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:12:36,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:12:36,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:12:36,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:12:36,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:12:36,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:12:36,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:12:36,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:12:36,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:12:36,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:12:36,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:12:36,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:12:36,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:12:36,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:12:36,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:12:36,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:12:36,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:12:36,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:12:36,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:12:36,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:12:36,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:12:36,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:12:36,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:12:36,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:12:36,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:12:36,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:12:36,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:12:36,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:12:36,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:12:36,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:12:36,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:12:36,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:12:36,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:12:36,150 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:12:36,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:12:36,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:12:36,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:12:36,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:12:36,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:12:36,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:12:36,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:12:36,152 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:12:36,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:12:36,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:12:36,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:12:36,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:12:36,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:12:36,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:12:36,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:12:36,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:12:36,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:12:36,154 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:12:36,155 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:12:36,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:12:36,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:12:36,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:12:36,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:12:36,155 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:12:36,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:12:36,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:12:36,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:12:36,363 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:12:36,364 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:12:36,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c [2022-01-10 06:12:36,415 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0005386c3/2603e91727534a87955992cbca3705a2/FLAG33c16fbe6 [2022-01-10 06:12:36,895 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:12:36,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c [2022-01-10 06:12:36,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0005386c3/2603e91727534a87955992cbca3705a2/FLAG33c16fbe6 [2022-01-10 06:12:36,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0005386c3/2603e91727534a87955992cbca3705a2 [2022-01-10 06:12:36,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:12:36,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:12:36,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:12:36,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:12:36,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:12:36,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:12:36" (1/1) ... [2022-01-10 06:12:36,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4cfe50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:36, skipping insertion in model container [2022-01-10 06:12:36,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:12:36" (1/1) ... [2022-01-10 06:12:36,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:12:36,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:12:37,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2022-01-10 06:12:37,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:37,396 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:12:37,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:12:37,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2022-01-10 06:12:37,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:37,520 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:12:37,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product28.cil.c[43703,43716] [2022-01-10 06:12:37,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:37,618 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:12:37,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37 WrapperNode [2022-01-10 06:12:37,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:12:37,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:12:37,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:12:37,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:12:37,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,701 INFO L137 Inliner]: procedures = 96, calls = 341, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1044 [2022-01-10 06:12:37,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:12:37,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:12:37,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:12:37,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:12:37,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:12:37,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:12:37,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:12:37,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:12:37,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (1/1) ... [2022-01-10 06:12:37,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:12:37,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:12:37,809 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) [2022-01-10 06:12:37,817 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 [2022-01-10 06:12:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:12:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:12:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:12:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:12:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:12:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:12:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:12:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-01-10 06:12:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-01-10 06:12:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:12:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:12:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-01-10 06:12:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-01-10 06:12:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:12:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:12:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:12:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:12:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:12:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:12:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-01-10 06:12:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-01-10 06:12:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:12:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:12:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:12:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:12:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:12:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:12:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:12:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:12:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:12:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:12:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:12:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:12:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-01-10 06:12:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:12:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:12:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:12:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:12:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:12:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:12:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:12:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:12:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:12:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:12:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:12:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:12:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:12:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:12:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:12:37,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:12:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:12:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:12:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-01-10 06:12:37,842 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-01-10 06:12:37,978 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:12:37,980 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:12:38,742 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:12:38,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:12:38,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:12:38,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:12:38 BoogieIcfgContainer [2022-01-10 06:12:38,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:12:38,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:12:38,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:12:38,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:12:38,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:12:36" (1/3) ... [2022-01-10 06:12:38,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514ec61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:12:38, skipping insertion in model container [2022-01-10 06:12:38,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:37" (2/3) ... [2022-01-10 06:12:38,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514ec61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:12:38, skipping insertion in model container [2022-01-10 06:12:38,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:12:38" (3/3) ... [2022-01-10 06:12:38,767 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product28.cil.c [2022-01-10 06:12:38,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:12:38,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:12:38,821 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:12:38,827 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 [2022-01-10 06:12:38,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:12:38,862 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) [2022-01-10 06:12:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 06:12:38,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:38,875 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] [2022-01-10 06:12:38,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:38,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash 861521184, now seen corresponding path program 1 times [2022-01-10 06:12:38,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:38,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069331910] [2022-01-10 06:12:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:38,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:38,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:38,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:38,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:12:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:39,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:39,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:39,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:39,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:39,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069331910] [2022-01-10 06:12:39,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069331910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:39,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:39,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:39,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77020063] [2022-01-10 06:12:39,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:39,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:39,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:39,328 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 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:39,453 INFO L93 Difference]: Finished difference Result 1101 states and 1826 transitions. [2022-01-10 06:12:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:39,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-01-10 06:12:39,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:39,479 INFO L225 Difference]: With dead ends: 1101 [2022-01-10 06:12:39,480 INFO L226 Difference]: Without dead ends: 549 [2022-01-10 06:12:39,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:39,491 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 15 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:39,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2678 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-10 06:12:39,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-01-10 06:12:39,570 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) [2022-01-10 06:12:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 901 transitions. [2022-01-10 06:12:39,579 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 901 transitions. Word has length 63 [2022-01-10 06:12:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:39,583 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 901 transitions. [2022-01-10 06:12:39,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:39,584 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 901 transitions. [2022-01-10 06:12:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:12:39,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:39,590 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] [2022-01-10 06:12:39,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:39,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:39,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:39,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2026902989, now seen corresponding path program 1 times [2022-01-10 06:12:39,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:39,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834566644] [2022-01-10 06:12:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:39,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:39,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:39,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:12:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:39,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:39,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:40,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:40,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:40,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834566644] [2022-01-10 06:12:40,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834566644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:40,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:40,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:40,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014160634] [2022-01-10 06:12:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:40,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:40,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:40,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:40,088 INFO L87 Difference]: Start difference. First operand 549 states and 901 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:40,137 INFO L93 Difference]: Finished difference Result 1081 states and 1779 transitions. [2022-01-10 06:12:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:40,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-01-10 06:12:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:40,141 INFO L225 Difference]: With dead ends: 1081 [2022-01-10 06:12:40,141 INFO L226 Difference]: Without dead ends: 549 [2022-01-10 06:12:40,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:40,144 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 12 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:40,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2646 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-10 06:12:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-01-10 06:12:40,157 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) [2022-01-10 06:12:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 900 transitions. [2022-01-10 06:12:40,161 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 900 transitions. Word has length 64 [2022-01-10 06:12:40,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:40,161 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 900 transitions. [2022-01-10 06:12:40,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:40,161 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 900 transitions. [2022-01-10 06:12:40,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 06:12:40,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:40,162 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] [2022-01-10 06:12:40,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:40,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:40,375 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:40,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1702940924, now seen corresponding path program 1 times [2022-01-10 06:12:40,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:40,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348675345] [2022-01-10 06:12:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:40,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:40,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:40,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:12:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:40,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:40,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:40,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:40,674 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:40,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348675345] [2022-01-10 06:12:40,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348675345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:40,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:40,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:40,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146656296] [2022-01-10 06:12:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:40,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:40,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:40,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:40,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:40,676 INFO L87 Difference]: Start difference. First operand 549 states and 900 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:40,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:40,719 INFO L93 Difference]: Finished difference Result 1081 states and 1778 transitions. [2022-01-10 06:12:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:40,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-01-10 06:12:40,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:40,725 INFO L225 Difference]: With dead ends: 1081 [2022-01-10 06:12:40,725 INFO L226 Difference]: Without dead ends: 549 [2022-01-10 06:12:40,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:40,728 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 10 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:40,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2646 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-10 06:12:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-01-10 06:12:40,739 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) [2022-01-10 06:12:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 899 transitions. [2022-01-10 06:12:40,742 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 899 transitions. Word has length 65 [2022-01-10 06:12:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:40,742 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 899 transitions. [2022-01-10 06:12:40,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:40,743 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 899 transitions. [2022-01-10 06:12:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:12:40,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:40,760 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] [2022-01-10 06:12:40,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:40,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:40,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:40,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:40,972 INFO L85 PathProgramCache]: Analyzing trace with hash 145697999, now seen corresponding path program 1 times [2022-01-10 06:12:40,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:40,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747466112] [2022-01-10 06:12:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:40,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:40,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:40,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:12:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:41,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:41,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:41,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:41,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:41,252 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:41,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747466112] [2022-01-10 06:12:41,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747466112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:41,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:41,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:41,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42155051] [2022-01-10 06:12:41,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:41,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:41,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:41,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:41,254 INFO L87 Difference]: Start difference. First operand 549 states and 899 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:41,319 INFO L93 Difference]: Finished difference Result 1081 states and 1777 transitions. [2022-01-10 06:12:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-01-10 06:12:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:41,323 INFO L225 Difference]: With dead ends: 1081 [2022-01-10 06:12:41,323 INFO L226 Difference]: Without dead ends: 549 [2022-01-10 06:12:41,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:41,325 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 8 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:41,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2646 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-10 06:12:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-01-10 06:12:41,336 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) [2022-01-10 06:12:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 898 transitions. [2022-01-10 06:12:41,339 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 898 transitions. Word has length 66 [2022-01-10 06:12:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:41,340 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 898 transitions. [2022-01-10 06:12:41,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 898 transitions. [2022-01-10 06:12:41,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:12:41,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:41,341 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] [2022-01-10 06:12:41,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 06:12:41,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:41,552 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:41,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2102479656, now seen corresponding path program 1 times [2022-01-10 06:12:41,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:41,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940909815] [2022-01-10 06:12:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:41,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:41,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:41,555 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:41,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:12:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:41,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:41,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:41,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:41,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:41,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940909815] [2022-01-10 06:12:41,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940909815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:41,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:41,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:41,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378568875] [2022-01-10 06:12:41,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:41,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:41,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:41,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:41,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:41,841 INFO L87 Difference]: Start difference. First operand 549 states and 898 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:41,876 INFO L93 Difference]: Finished difference Result 1081 states and 1776 transitions. [2022-01-10 06:12:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-01-10 06:12:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:41,879 INFO L225 Difference]: With dead ends: 1081 [2022-01-10 06:12:41,879 INFO L226 Difference]: Without dead ends: 549 [2022-01-10 06:12:41,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:41,882 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 6 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:41,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2646 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-01-10 06:12:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-01-10 06:12:41,891 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) [2022-01-10 06:12:41,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 897 transitions. [2022-01-10 06:12:41,894 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 897 transitions. Word has length 67 [2022-01-10 06:12:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:41,894 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 897 transitions. [2022-01-10 06:12:41,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 897 transitions. [2022-01-10 06:12:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:12:41,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:41,895 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] [2022-01-10 06:12:41,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:42,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:42,106 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:42,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:42,107 INFO L85 PathProgramCache]: Analyzing trace with hash 169835, now seen corresponding path program 1 times [2022-01-10 06:12:42,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:42,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629454285] [2022-01-10 06:12:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:42,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:42,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:42,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:42,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:12:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:42,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:42,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:42,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:42,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:42,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629454285] [2022-01-10 06:12:42,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629454285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:42,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:42,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:42,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028484636] [2022-01-10 06:12:42,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:42,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:42,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:42,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:42,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:42,410 INFO L87 Difference]: Start difference. First operand 549 states and 897 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:12:42,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:42,548 INFO L93 Difference]: Finished difference Result 1092 states and 1793 transitions. [2022-01-10 06:12:42,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:42,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2022-01-10 06:12:42,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:42,552 INFO L225 Difference]: With dead ends: 1092 [2022-01-10 06:12:42,552 INFO L226 Difference]: Without dead ends: 564 [2022-01-10 06:12:42,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:42,555 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 117 mSDsluCounter, 4319 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 5202 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:42,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 5202 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-01-10 06:12:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 562. [2022-01-10 06:12:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 436 states have (on average 1.6490825688073394) internal successors, (719), 455 states have internal predecessors, (719), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (100), 94 states have call predecessors, (100), 97 states have call successors, (100) [2022-01-10 06:12:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 917 transitions. [2022-01-10 06:12:42,577 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 917 transitions. Word has length 68 [2022-01-10 06:12:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:42,578 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 917 transitions. [2022-01-10 06:12:42,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:12:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 917 transitions. [2022-01-10 06:12:42,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:12:42,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:42,591 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] [2022-01-10 06:12:42,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:42,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:42,792 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:42,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:42,793 INFO L85 PathProgramCache]: Analyzing trace with hash 769339850, now seen corresponding path program 1 times [2022-01-10 06:12:42,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:42,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623902362] [2022-01-10 06:12:42,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:42,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:42,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:42,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:42,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:12:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:42,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:42,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:43,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:43,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:43,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623902362] [2022-01-10 06:12:43,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623902362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:43,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:43,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:43,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97707178] [2022-01-10 06:12:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:43,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:43,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:43,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:43,068 INFO L87 Difference]: Start difference. First operand 562 states and 917 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:43,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:43,109 INFO L93 Difference]: Finished difference Result 1099 states and 1804 transitions. [2022-01-10 06:12:43,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:43,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-01-10 06:12:43,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:43,113 INFO L225 Difference]: With dead ends: 1099 [2022-01-10 06:12:43,113 INFO L226 Difference]: Without dead ends: 558 [2022-01-10 06:12:43,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:43,115 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 6 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:43,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2645 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-10 06:12:43,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2022-01-10 06:12:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 434 states have (on average 1.6497695852534562) internal successors, (716), 452 states have internal predecessors, (716), 97 states have call successors, (97), 26 states have call predecessors, (97), 26 states have return successors, (97), 93 states have call predecessors, (97), 96 states have call successors, (97) [2022-01-10 06:12:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 910 transitions. [2022-01-10 06:12:43,142 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 910 transitions. Word has length 68 [2022-01-10 06:12:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:43,142 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 910 transitions. [2022-01-10 06:12:43,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 910 transitions. [2022-01-10 06:12:43,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:12:43,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:43,146 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] [2022-01-10 06:12:43,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:43,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:43,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1884875238, now seen corresponding path program 1 times [2022-01-10 06:12:43,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:43,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788211078] [2022-01-10 06:12:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:43,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:43,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:43,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:43,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:12:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:43,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:43,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:43,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:43,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788211078] [2022-01-10 06:12:43,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788211078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:43,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:43,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:43,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186297426] [2022-01-10 06:12:43,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:43,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:43,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:43,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:43,634 INFO L87 Difference]: Start difference. First operand 558 states and 910 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:43,751 INFO L93 Difference]: Finished difference Result 1124 states and 1848 transitions. [2022-01-10 06:12:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:43,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 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 [2022-01-10 06:12:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:43,755 INFO L225 Difference]: With dead ends: 1124 [2022-01-10 06:12:43,756 INFO L226 Difference]: Without dead ends: 572 [2022-01-10 06:12:43,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:43,758 INFO L933 BasicCegarLoop]: 841 mSDtfsCounter, 114 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2474 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:43,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 2474 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-01-10 06:12:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 563. [2022-01-10 06:12:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6378132118451025) internal successors, (719), 456 states have internal predecessors, (719), 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) [2022-01-10 06:12:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 912 transitions. [2022-01-10 06:12:43,770 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 912 transitions. Word has length 69 [2022-01-10 06:12:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:43,770 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 912 transitions. [2022-01-10 06:12:43,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 912 transitions. [2022-01-10 06:12:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 06:12:43,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:43,771 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] [2022-01-10 06:12:43,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:43,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:43,985 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1602037038, now seen corresponding path program 1 times [2022-01-10 06:12:43,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:43,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495652699] [2022-01-10 06:12:43,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:43,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:43,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:43,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:43,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:12:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:44,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:44,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:44,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:44,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:44,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495652699] [2022-01-10 06:12:44,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495652699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:44,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:44,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:44,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868520828] [2022-01-10 06:12:44,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:44,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:44,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:44,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:44,284 INFO L87 Difference]: Start difference. First operand 563 states and 912 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:44,380 INFO L93 Difference]: Finished difference Result 1075 states and 1744 transitions. [2022-01-10 06:12:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:44,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 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 [2022-01-10 06:12:44,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:44,384 INFO L225 Difference]: With dead ends: 1075 [2022-01-10 06:12:44,384 INFO L226 Difference]: Without dead ends: 563 [2022-01-10 06:12:44,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:44,387 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 78 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:44,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 2477 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-01-10 06:12:44,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2022-01-10 06:12:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6287015945330297) internal successors, (715), 456 states have internal predecessors, (715), 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) [2022-01-10 06:12:44,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 908 transitions. [2022-01-10 06:12:44,399 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 908 transitions. Word has length 70 [2022-01-10 06:12:44,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:44,399 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 908 transitions. [2022-01-10 06:12:44,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:44,400 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 908 transitions. [2022-01-10 06:12:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 06:12:44,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:44,400 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] [2022-01-10 06:12:44,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:44,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:44,611 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:44,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:44,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1886599905, now seen corresponding path program 1 times [2022-01-10 06:12:44,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:44,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323396767] [2022-01-10 06:12:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:44,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:44,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:44,613 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:44,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:12:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:44,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:44,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:44,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:44,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:44,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323396767] [2022-01-10 06:12:44,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323396767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:44,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:44,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:44,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145918669] [2022-01-10 06:12:44,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:44,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:44,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:44,866 INFO L87 Difference]: Start difference. First operand 563 states and 908 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:44,965 INFO L93 Difference]: Finished difference Result 1075 states and 1740 transitions. [2022-01-10 06:12:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 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 [2022-01-10 06:12:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:44,969 INFO L225 Difference]: With dead ends: 1075 [2022-01-10 06:12:44,969 INFO L226 Difference]: Without dead ends: 563 [2022-01-10 06:12:44,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:44,973 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 73 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:44,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 2477 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-01-10 06:12:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2022-01-10 06:12:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6195899772209568) internal successors, (711), 456 states have internal predecessors, (711), 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) [2022-01-10 06:12:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 904 transitions. [2022-01-10 06:12:44,986 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 904 transitions. Word has length 71 [2022-01-10 06:12:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:44,987 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 904 transitions. [2022-01-10 06:12:44,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 904 transitions. [2022-01-10 06:12:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 06:12:44,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:44,988 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] [2022-01-10 06:12:45,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:45,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:45,198 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:45,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:45,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2064383585, now seen corresponding path program 1 times [2022-01-10 06:12:45,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:45,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254047055] [2022-01-10 06:12:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:45,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:45,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:45,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:12:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:45,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:45,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:45,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:45,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:45,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254047055] [2022-01-10 06:12:45,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254047055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:45,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:45,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:45,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430035611] [2022-01-10 06:12:45,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:45,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:45,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:45,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:45,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:45,493 INFO L87 Difference]: Start difference. First operand 563 states and 904 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:12:45,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:45,590 INFO L93 Difference]: Finished difference Result 1084 states and 1750 transitions. [2022-01-10 06:12:45,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:45,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-01-10 06:12:45,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:45,594 INFO L225 Difference]: With dead ends: 1084 [2022-01-10 06:12:45,595 INFO L226 Difference]: Without dead ends: 551 [2022-01-10 06:12:45,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:45,597 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 107 mSDsluCounter, 4245 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 5118 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:45,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 5118 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-01-10 06:12:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 542. [2022-01-10 06:12:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 418 states have (on average 1.61244019138756) internal successors, (674), 435 states have internal predecessors, (674), 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) [2022-01-10 06:12:45,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 867 transitions. [2022-01-10 06:12:45,610 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 867 transitions. Word has length 71 [2022-01-10 06:12:45,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:45,610 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 867 transitions. [2022-01-10 06:12:45,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:12:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 867 transitions. [2022-01-10 06:12:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:12:45,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:45,611 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] [2022-01-10 06:12:45,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:45,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:45,821 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1721036755, now seen corresponding path program 1 times [2022-01-10 06:12:45,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:45,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008105600] [2022-01-10 06:12:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:45,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:45,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:45,823 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:45,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:12:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:46,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:46,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:46,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:46,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:46,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008105600] [2022-01-10 06:12:46,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008105600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:46,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:46,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:46,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757341095] [2022-01-10 06:12:46,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:46,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:46,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:46,123 INFO L87 Difference]: Start difference. First operand 542 states and 867 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:46,184 INFO L93 Difference]: Finished difference Result 1054 states and 1699 transitions. [2022-01-10 06:12:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:46,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 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 [2022-01-10 06:12:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:46,189 INFO L225 Difference]: With dead ends: 1054 [2022-01-10 06:12:46,189 INFO L226 Difference]: Without dead ends: 542 [2022-01-10 06:12:46,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:46,192 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 41 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:46,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2477 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:46,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-01-10 06:12:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2022-01-10 06:12:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 418 states have (on average 1.6100478468899522) internal successors, (673), 435 states have internal predecessors, (673), 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) [2022-01-10 06:12:46,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 866 transitions. [2022-01-10 06:12:46,205 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 866 transitions. Word has length 72 [2022-01-10 06:12:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:46,205 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 866 transitions. [2022-01-10 06:12:46,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 866 transitions. [2022-01-10 06:12:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 06:12:46,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:46,206 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] [2022-01-10 06:12:46,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:46,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:46,416 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:46,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1974855716, now seen corresponding path program 1 times [2022-01-10 06:12:46,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:46,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049336319] [2022-01-10 06:12:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:46,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:46,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:46,418 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:46,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:12:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:46,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:46,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:46,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:46,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:46,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049336319] [2022-01-10 06:12:46,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049336319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:46,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:46,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:46,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664518055] [2022-01-10 06:12:46,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:46,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:46,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:46,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:46,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:46,696 INFO L87 Difference]: Start difference. First operand 542 states and 866 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:46,752 INFO L93 Difference]: Finished difference Result 1054 states and 1698 transitions. [2022-01-10 06:12:46,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:46,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 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 [2022-01-10 06:12:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:46,756 INFO L225 Difference]: With dead ends: 1054 [2022-01-10 06:12:46,756 INFO L226 Difference]: Without dead ends: 542 [2022-01-10 06:12:46,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:46,758 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 39 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:46,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2477 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-01-10 06:12:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2022-01-10 06:12:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 418 states have (on average 1.6076555023923444) internal successors, (672), 435 states have internal predecessors, (672), 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) [2022-01-10 06:12:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 865 transitions. [2022-01-10 06:12:46,769 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 865 transitions. Word has length 73 [2022-01-10 06:12:46,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:46,769 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 865 transitions. [2022-01-10 06:12:46,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 865 transitions. [2022-01-10 06:12:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:12:46,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:46,770 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] [2022-01-10 06:12:46,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:46,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:46,980 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:46,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1339541112, now seen corresponding path program 1 times [2022-01-10 06:12:46,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:46,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432121137] [2022-01-10 06:12:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:46,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:46,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:46,982 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:46,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:12:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:47,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:12:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:12:47,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:47,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432121137] [2022-01-10 06:12:47,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432121137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:47,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:47,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:12:47,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988164000] [2022-01-10 06:12:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:47,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:12:47,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:47,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:12:47,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:47,275 INFO L87 Difference]: Start difference. First operand 542 states and 865 transitions. Second operand has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:12:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:47,411 INFO L93 Difference]: Finished difference Result 1053 states and 1694 transitions. [2022-01-10 06:12:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:12:47,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-01-10 06:12:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:47,415 INFO L225 Difference]: With dead ends: 1053 [2022-01-10 06:12:47,415 INFO L226 Difference]: Without dead ends: 547 [2022-01-10 06:12:47,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:12:47,417 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 46 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:47,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 5722 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:47,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-01-10 06:12:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 544. [2022-01-10 06:12:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 420 states have (on average 1.6023809523809525) internal successors, (673), 437 states have internal predecessors, (673), 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) [2022-01-10 06:12:47,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 866 transitions. [2022-01-10 06:12:47,430 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 866 transitions. Word has length 74 [2022-01-10 06:12:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:47,431 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 866 transitions. [2022-01-10 06:12:47,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 06:12:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 866 transitions. [2022-01-10 06:12:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 06:12:47,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:47,432 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] [2022-01-10 06:12:47,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:47,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:47,641 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash 102707193, now seen corresponding path program 1 times [2022-01-10 06:12:47,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:47,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737339016] [2022-01-10 06:12:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:47,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:47,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:47,643 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:47,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:12:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:47,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:12:47,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:12:48,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:48,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:48,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737339016] [2022-01-10 06:12:48,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737339016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:48,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:48,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:12:48,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832752442] [2022-01-10 06:12:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:48,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:12:48,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:48,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:12:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:48,048 INFO L87 Difference]: Start difference. First operand 544 states and 866 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:48,166 INFO L93 Difference]: Finished difference Result 1533 states and 2490 transitions. [2022-01-10 06:12:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:12:48,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (9), 2 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 75 [2022-01-10 06:12:48,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:48,173 INFO L225 Difference]: With dead ends: 1533 [2022-01-10 06:12:48,173 INFO L226 Difference]: Without dead ends: 1032 [2022-01-10 06:12:48,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:48,176 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 765 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:48,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 1816 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:48,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-01-10 06:12:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 969. [2022-01-10 06:12:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 753 states have (on average 1.6215139442231075) internal successors, (1221), 779 states have internal predecessors, (1221), 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) [2022-01-10 06:12:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1566 transitions. [2022-01-10 06:12:48,208 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1566 transitions. Word has length 75 [2022-01-10 06:12:48,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:48,209 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1566 transitions. [2022-01-10 06:12:48,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:12:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1566 transitions. [2022-01-10 06:12:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:12:48,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:48,213 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] [2022-01-10 06:12:48,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:48,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:48,423 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:48,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1304070991, now seen corresponding path program 1 times [2022-01-10 06:12:48,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:48,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294401427] [2022-01-10 06:12:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:48,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:48,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:48,425 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:48,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:12:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:48,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:12:48,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 06:12:48,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:48,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:48,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294401427] [2022-01-10 06:12:48,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294401427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:48,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:48,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:48,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334634869] [2022-01-10 06:12:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:48,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:48,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:48,828 INFO L87 Difference]: Start difference. First operand 969 states and 1566 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) [2022-01-10 06:12:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:49,411 INFO L93 Difference]: Finished difference Result 1903 states and 3152 transitions. [2022-01-10 06:12:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:49,411 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 [2022-01-10 06:12:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:49,417 INFO L225 Difference]: With dead ends: 1903 [2022-01-10 06:12:49,417 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 06:12:49,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:12:49,422 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 789 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:49,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 2085 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:12:49,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 06:12:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 977. [2022-01-10 06:12:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 759 states have (on average 1.616600790513834) internal successors, (1227), 785 states have internal predecessors, (1227), 170 states have call successors, (170), 49 states have call predecessors, (170), 47 states have return successors, (177), 157 states have call predecessors, (177), 168 states have call successors, (177) [2022-01-10 06:12:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1574 transitions. [2022-01-10 06:12:49,468 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1574 transitions. Word has length 128 [2022-01-10 06:12:49,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:49,468 INFO L470 AbstractCegarLoop]: Abstraction has 977 states and 1574 transitions. [2022-01-10 06:12:49,468 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) [2022-01-10 06:12:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1574 transitions. [2022-01-10 06:12:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 06:12:49,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:49,471 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] [2022-01-10 06:12:49,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:49,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:49,682 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash 114714719, now seen corresponding path program 1 times [2022-01-10 06:12:49,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:49,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115588687] [2022-01-10 06:12:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:49,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:49,684 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:49,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:12:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:49,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:12:49,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 06:12:50,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:50,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:50,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115588687] [2022-01-10 06:12:50,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115588687] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:50,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:50,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:50,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872292197] [2022-01-10 06:12:50,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:50,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:50,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:50,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:50,112 INFO L87 Difference]: Start difference. First operand 977 states and 1574 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) [2022-01-10 06:12:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:50,710 INFO L93 Difference]: Finished difference Result 1921 states and 3166 transitions. [2022-01-10 06:12:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:50,711 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 [2022-01-10 06:12:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:50,716 INFO L225 Difference]: With dead ends: 1921 [2022-01-10 06:12:50,716 INFO L226 Difference]: Without dead ends: 987 [2022-01-10 06:12:50,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:12:50,721 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 774 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:50,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 2086 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:12:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-01-10 06:12:50,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 987. [2022-01-10 06:12:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 767 states have (on average 1.6101694915254237) internal successors, (1235), 793 states have internal predecessors, (1235), 170 states have call successors, (170), 51 states have call predecessors, (170), 49 states have return successors, (179), 157 states have call predecessors, (179), 168 states have call successors, (179) [2022-01-10 06:12:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1584 transitions. [2022-01-10 06:12:50,748 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1584 transitions. Word has length 131 [2022-01-10 06:12:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:50,748 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1584 transitions. [2022-01-10 06:12:50,749 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) [2022-01-10 06:12:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1584 transitions. [2022-01-10 06:12:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:12:50,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:50,751 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] [2022-01-10 06:12:50,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:50,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:50,964 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1562258166, now seen corresponding path program 1 times [2022-01-10 06:12:50,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:50,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2145725023] [2022-01-10 06:12:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:50,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:50,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:50,965 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:50,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:12:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:51,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:12:51,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 06:12:51,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:51,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:51,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2145725023] [2022-01-10 06:12:51,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2145725023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:51,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:51,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:12:51,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244297321] [2022-01-10 06:12:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:51,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:12:51,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:12:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:12:51,376 INFO L87 Difference]: Start difference. First operand 987 states and 1584 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) [2022-01-10 06:12:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:51,798 INFO L93 Difference]: Finished difference Result 2296 states and 3647 transitions. [2022-01-10 06:12:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:51,799 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 [2022-01-10 06:12:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:51,805 INFO L225 Difference]: With dead ends: 2296 [2022-01-10 06:12:51,805 INFO L226 Difference]: Without dead ends: 1352 [2022-01-10 06:12:51,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:51,810 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 616 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:51,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 3972 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:12:51,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2022-01-10 06:12:51,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1346. [2022-01-10 06:12:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1035 states have (on average 1.5381642512077294) internal successors, (1592), 1058 states have internal predecessors, (1592), 231 states have call successors, (231), 79 states have call predecessors, (231), 79 states have return successors, (269), 222 states have call predecessors, (269), 227 states have call successors, (269) [2022-01-10 06:12:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 2092 transitions. [2022-01-10 06:12:51,849 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 2092 transitions. Word has length 133 [2022-01-10 06:12:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:51,849 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 2092 transitions. [2022-01-10 06:12:51,849 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) [2022-01-10 06:12:51,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 2092 transitions. [2022-01-10 06:12:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:12:51,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:51,852 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] [2022-01-10 06:12:51,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:52,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:52,063 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:52,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:52,063 INFO L85 PathProgramCache]: Analyzing trace with hash -757109523, now seen corresponding path program 1 times [2022-01-10 06:12:52,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:52,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281746426] [2022-01-10 06:12:52,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:52,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:52,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:52,065 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:52,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:12:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:52,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:12:52,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 06:12:52,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:52,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:52,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281746426] [2022-01-10 06:12:52,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281746426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:52,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:52,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:52,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103680029] [2022-01-10 06:12:52,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:52,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:52,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:52,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:52,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:52,512 INFO L87 Difference]: Start difference. First operand 1346 states and 2092 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) [2022-01-10 06:12:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:53,070 INFO L93 Difference]: Finished difference Result 2673 states and 4269 transitions. [2022-01-10 06:12:53,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:53,070 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 [2022-01-10 06:12:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:53,076 INFO L225 Difference]: With dead ends: 2673 [2022-01-10 06:12:53,077 INFO L226 Difference]: Without dead ends: 1370 [2022-01-10 06:12:53,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:12:53,083 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 784 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:53,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 2086 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:12:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-01-10 06:12:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2022-01-10 06:12:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1055 states have (on average 1.5279620853080569) internal successors, (1612), 1078 states have internal predecessors, (1612), 231 states have call successors, (231), 83 states have call predecessors, (231), 83 states have return successors, (273), 222 states have call predecessors, (273), 227 states have call successors, (273) [2022-01-10 06:12:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2116 transitions. [2022-01-10 06:12:53,121 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2116 transitions. Word has length 134 [2022-01-10 06:12:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:53,121 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 2116 transitions. [2022-01-10 06:12:53,122 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) [2022-01-10 06:12:53,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2116 transitions. [2022-01-10 06:12:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-01-10 06:12:53,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:53,124 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] [2022-01-10 06:12:53,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 06:12:53,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:53,335 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:53,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:53,336 INFO L85 PathProgramCache]: Analyzing trace with hash -404367597, now seen corresponding path program 1 times [2022-01-10 06:12:53,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:53,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906278610] [2022-01-10 06:12:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:53,336 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:53,337 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:53,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:12:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:53,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:12:53,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:12:53,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:53,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:53,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906278610] [2022-01-10 06:12:53,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906278610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:53,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:53,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:53,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834395525] [2022-01-10 06:12:53,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:53,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:53,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:53,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:53,742 INFO L87 Difference]: Start difference. First operand 1370 states and 2116 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) [2022-01-10 06:12:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:54,310 INFO L93 Difference]: Finished difference Result 2725 states and 4317 transitions. [2022-01-10 06:12:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:54,311 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 [2022-01-10 06:12:54,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:54,317 INFO L225 Difference]: With dead ends: 2725 [2022-01-10 06:12:54,317 INFO L226 Difference]: Without dead ends: 1398 [2022-01-10 06:12:54,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:12:54,337 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 787 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:54,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 2086 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:12:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2022-01-10 06:12:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1398. [2022-01-10 06:12:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1079 states have (on average 1.516218721037998) internal successors, (1636), 1102 states have internal predecessors, (1636), 231 states have call successors, (231), 87 states have call predecessors, (231), 87 states have return successors, (277), 222 states have call predecessors, (277), 227 states have call successors, (277) [2022-01-10 06:12:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2144 transitions. [2022-01-10 06:12:54,367 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2144 transitions. Word has length 137 [2022-01-10 06:12:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:54,367 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 2144 transitions. [2022-01-10 06:12:54,368 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) [2022-01-10 06:12:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2144 transitions. [2022-01-10 06:12:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:12:54,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:54,370 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] [2022-01-10 06:12:54,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:54,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:12:54,586 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash 13797161, now seen corresponding path program 1 times [2022-01-10 06:12:54,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:54,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631641447] [2022-01-10 06:12:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:54,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:54,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:54,604 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:12:54,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:12:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:54,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:12:54,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:55,094 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:12:55,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:12:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:12:55,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:55,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [631641447] [2022-01-10 06:12:55,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [631641447] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:12:55,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:12:55,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-01-10 06:12:55,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094783056] [2022-01-10 06:12:55,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:12:55,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:12:55,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:12:55,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:12:55,630 INFO L87 Difference]: Start difference. First operand 1398 states and 2144 transitions. Second operand has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 14 states have internal predecessors, (159), 8 states have call successors, (30), 6 states have call predecessors, (30), 12 states have return successors, (31), 12 states have call predecessors, (31), 8 states have call successors, (31) [2022-01-10 06:13:02,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:02,193 INFO L93 Difference]: Finished difference Result 4644 states and 7363 transitions. [2022-01-10 06:13:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:13:02,194 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 14 states have internal predecessors, (159), 8 states have call successors, (30), 6 states have call predecessors, (30), 12 states have return successors, (31), 12 states have call predecessors, (31), 8 states have call successors, (31) Word has length 140 [2022-01-10 06:13:02,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:02,209 INFO L225 Difference]: With dead ends: 4644 [2022-01-10 06:13:02,209 INFO L226 Difference]: Without dead ends: 3289 [2022-01-10 06:13:02,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2022-01-10 06:13:02,219 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 4562 mSDsluCounter, 4577 mSDsCounter, 0 mSdLazyCounter, 9327 mSolverCounterSat, 1868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4642 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 11195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1868 IncrementalHoareTripleChecker+Valid, 9327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:02,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4642 Valid, 6251 Invalid, 11195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1868 Valid, 9327 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-01-10 06:13:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-01-10 06:13:02,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2919. [2022-01-10 06:13:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2221 states have (on average 1.5069788383610987) internal successors, (3347), 2278 states have internal predecessors, (3347), 498 states have call successors, (498), 171 states have call predecessors, (498), 199 states have return successors, (680), 502 states have call predecessors, (680), 490 states have call successors, (680) [2022-01-10 06:13:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 4525 transitions. [2022-01-10 06:13:02,328 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 4525 transitions. Word has length 140 [2022-01-10 06:13:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:02,328 INFO L470 AbstractCegarLoop]: Abstraction has 2919 states and 4525 transitions. [2022-01-10 06:13:02,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.833333333333334) internal successors, (159), 14 states have internal predecessors, (159), 8 states have call successors, (30), 6 states have call predecessors, (30), 12 states have return successors, (31), 12 states have call predecessors, (31), 8 states have call successors, (31) [2022-01-10 06:13:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 4525 transitions. [2022-01-10 06:13:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:13:02,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:02,335 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, 1, 1, 1] [2022-01-10 06:13:02,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:02,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:02,546 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:02,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1164853760, now seen corresponding path program 1 times [2022-01-10 06:13:02,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:02,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466608177] [2022-01-10 06:13:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:02,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:02,548 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:02,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:13:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:02,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:13:02,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:13:02,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:02,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:02,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466608177] [2022-01-10 06:13:02,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466608177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:02,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:02,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:13:02,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536759790] [2022-01-10 06:13:02,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:02,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:13:02,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:13:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:13:02,991 INFO L87 Difference]: Start difference. First operand 2919 states and 4525 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:13:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:03,181 INFO L93 Difference]: Finished difference Result 5676 states and 8823 transitions. [2022-01-10 06:13:03,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:13:03,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 143 [2022-01-10 06:13:03,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:03,198 INFO L225 Difference]: With dead ends: 5676 [2022-01-10 06:13:03,198 INFO L226 Difference]: Without dead ends: 2790 [2022-01-10 06:13:03,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:13:03,207 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 58 mSDsluCounter, 4897 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 5719 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:03,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 5719 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:13:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2022-01-10 06:13:03,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2778. [2022-01-10 06:13:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2114 states have (on average 1.5137180700094608) internal successors, (3200), 2170 states have internal predecessors, (3200), 478 states have call successors, (478), 159 states have call predecessors, (478), 185 states have return successors, (632), 481 states have call predecessors, (632), 470 states have call successors, (632) [2022-01-10 06:13:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4310 transitions. [2022-01-10 06:13:03,289 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4310 transitions. Word has length 143 [2022-01-10 06:13:03,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:03,289 INFO L470 AbstractCegarLoop]: Abstraction has 2778 states and 4310 transitions. [2022-01-10 06:13:03,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:13:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4310 transitions. [2022-01-10 06:13:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 06:13:03,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:03,292 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1] [2022-01-10 06:13:03,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:03,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:03,503 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:03,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1706365924, now seen corresponding path program 1 times [2022-01-10 06:13:03,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:03,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632145713] [2022-01-10 06:13:03,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:03,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:03,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:03,506 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:03,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:13:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:03,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:13:03,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:13:03,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:13:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:13:04,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:04,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632145713] [2022-01-10 06:13:04,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632145713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:13:04,502 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:13:04,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-10 06:13:04,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452334141] [2022-01-10 06:13:04,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:13:04,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:13:04,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:04,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:13:04,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:13:04,504 INFO L87 Difference]: Start difference. First operand 2778 states and 4310 transitions. Second operand has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (31), 6 states have call predecessors, (31), 10 states have return successors, (31), 10 states have call predecessors, (31), 8 states have call successors, (31) [2022-01-10 06:13:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:08,782 INFO L93 Difference]: Finished difference Result 7049 states and 11148 transitions. [2022-01-10 06:13:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:13:08,783 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (31), 6 states have call predecessors, (31), 10 states have return successors, (31), 10 states have call predecessors, (31), 8 states have call successors, (31) Word has length 146 [2022-01-10 06:13:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:08,803 INFO L225 Difference]: With dead ends: 7049 [2022-01-10 06:13:08,804 INFO L226 Difference]: Without dead ends: 4311 [2022-01-10 06:13:08,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-01-10 06:13:08,815 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 5116 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 5673 mSolverCounterSat, 1641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5187 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 7314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1641 IncrementalHoareTripleChecker+Valid, 5673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:08,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5187 Valid, 4293 Invalid, 7314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1641 Valid, 5673 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-10 06:13:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2022-01-10 06:13:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4153. [2022-01-10 06:13:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 3148 states have (on average 1.5130241423125794) internal successors, (4763), 3229 states have internal predecessors, (4763), 725 states have call successors, (725), 231 states have call predecessors, (725), 279 states have return successors, (973), 744 states have call predecessors, (973), 713 states have call successors, (973) [2022-01-10 06:13:08,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 6461 transitions. [2022-01-10 06:13:08,939 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 6461 transitions. Word has length 146 [2022-01-10 06:13:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:08,939 INFO L470 AbstractCegarLoop]: Abstraction has 4153 states and 6461 transitions. [2022-01-10 06:13:08,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (31), 6 states have call predecessors, (31), 10 states have return successors, (31), 10 states have call predecessors, (31), 8 states have call successors, (31) [2022-01-10 06:13:08,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 6461 transitions. [2022-01-10 06:13:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 06:13:08,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:08,942 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1] [2022-01-10 06:13:08,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:09,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:09,153 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1586214698, now seen corresponding path program 1 times [2022-01-10 06:13:09,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625243817] [2022-01-10 06:13:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:09,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:09,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:09,155 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:09,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:13:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:09,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:13:09,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:13:09,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:13:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:13:09,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:09,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625243817] [2022-01-10 06:13:09,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625243817] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:13:09,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:13:09,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-01-10 06:13:09,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730988643] [2022-01-10 06:13:09,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:13:09,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:13:09,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:09,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:13:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:13:09,942 INFO L87 Difference]: Start difference. First operand 4153 states and 6461 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2022-01-10 06:13:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:15,623 INFO L93 Difference]: Finished difference Result 16663 states and 26690 transitions. [2022-01-10 06:13:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:13:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) Word has length 147 [2022-01-10 06:13:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:15,688 INFO L225 Difference]: With dead ends: 16663 [2022-01-10 06:13:15,688 INFO L226 Difference]: Without dead ends: 12538 [2022-01-10 06:13:15,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:13:15,717 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 3585 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 6896 mSolverCounterSat, 1073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3684 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 7969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1073 IncrementalHoareTripleChecker+Valid, 6896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:15,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3684 Valid, 3705 Invalid, 7969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1073 Valid, 6896 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 06:13:15,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12538 states. [2022-01-10 06:13:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12538 to 11100. [2022-01-10 06:13:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11100 states, 8358 states have (on average 1.492581957406078) internal successors, (12475), 8592 states have internal predecessors, (12475), 1963 states have call successors, (1963), 669 states have call predecessors, (1963), 778 states have return successors, (2803), 1988 states have call predecessors, (2803), 1933 states have call successors, (2803) [2022-01-10 06:13:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11100 states to 11100 states and 17241 transitions. [2022-01-10 06:13:16,206 INFO L78 Accepts]: Start accepts. Automaton has 11100 states and 17241 transitions. Word has length 147 [2022-01-10 06:13:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:16,206 INFO L470 AbstractCegarLoop]: Abstraction has 11100 states and 17241 transitions. [2022-01-10 06:13:16,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 6 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 7 states have call predecessors, (26), 6 states have call successors, (26) [2022-01-10 06:13:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11100 states and 17241 transitions. [2022-01-10 06:13:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 06:13:16,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:16,210 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:16,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 06:13:16,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:16,421 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:16,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash -294081843, now seen corresponding path program 1 times [2022-01-10 06:13:16,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:16,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313956547] [2022-01-10 06:13:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:16,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:16,424 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:16,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:13:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:16,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:13:16,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:13:16,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:16,923 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:16,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313956547] [2022-01-10 06:13:16,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313956547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:16,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:16,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:13:16,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653493507] [2022-01-10 06:13:16,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:16,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:13:16,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:16,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:13:16,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:13:16,924 INFO L87 Difference]: Start difference. First operand 11100 states and 17241 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-01-10 06:13:21,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:21,484 INFO L93 Difference]: Finished difference Result 31316 states and 50874 transitions. [2022-01-10 06:13:21,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:13:21,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 149 [2022-01-10 06:13:21,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:21,599 INFO L225 Difference]: With dead ends: 31316 [2022-01-10 06:13:21,599 INFO L226 Difference]: Without dead ends: 20238 [2022-01-10 06:13:21,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:13:21,739 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 2150 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:21,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2284 Valid, 3215 Invalid, 6054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-10 06:13:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20238 states. [2022-01-10 06:13:22,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20238 to 19350. [2022-01-10 06:13:22,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19350 states, 13944 states have (on average 1.4799913941480207) internal successors, (20637), 14578 states have internal predecessors, (20637), 4143 states have call successors, (4143), 987 states have call predecessors, (4143), 1262 states have return successors, (6406), 4288 states have call predecessors, (6406), 4098 states have call successors, (6406) [2022-01-10 06:13:22,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19350 states to 19350 states and 31186 transitions. [2022-01-10 06:13:22,558 INFO L78 Accepts]: Start accepts. Automaton has 19350 states and 31186 transitions. Word has length 149 [2022-01-10 06:13:22,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:22,559 INFO L470 AbstractCegarLoop]: Abstraction has 19350 states and 31186 transitions. [2022-01-10 06:13:22,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-01-10 06:13:22,559 INFO L276 IsEmpty]: Start isEmpty. Operand 19350 states and 31186 transitions. [2022-01-10 06:13:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 06:13:22,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:22,562 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:22,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:22,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:22,772 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1891852204, now seen corresponding path program 1 times [2022-01-10 06:13:22,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794597396] [2022-01-10 06:13:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:22,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:22,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:22,775 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:22,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:13:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:22,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:13:22,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:13:23,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:23,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:23,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794597396] [2022-01-10 06:13:23,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794597396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:23,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:23,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:13:23,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722011730] [2022-01-10 06:13:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:23,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:13:23,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:13:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:13:23,227 INFO L87 Difference]: Start difference. First operand 19350 states and 31186 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-01-10 06:13:28,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:28,316 INFO L93 Difference]: Finished difference Result 57131 states and 94229 transitions. [2022-01-10 06:13:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:13:28,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 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 149 [2022-01-10 06:13:28,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:28,711 INFO L225 Difference]: With dead ends: 57131 [2022-01-10 06:13:28,711 INFO L226 Difference]: Without dead ends: 42017 [2022-01-10 06:13:28,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-01-10 06:13:28,812 INFO L933 BasicCegarLoop]: 1110 mSDtfsCounter, 2885 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 4123 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 4787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 4123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:28,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2973 Valid, 2988 Invalid, 4787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 4123 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-01-10 06:13:28,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42017 states. [2022-01-10 06:13:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42017 to 37561. [2022-01-10 06:13:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37561 states, 27203 states have (on average 1.4674852038378121) internal successors, (39920), 28391 states have internal predecessors, (39920), 7742 states have call successors, (7742), 1887 states have call predecessors, (7742), 2615 states have return successors, (13047), 8118 states have call predecessors, (13047), 7661 states have call successors, (13047) [2022-01-10 06:13:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37561 states to 37561 states and 60709 transitions. [2022-01-10 06:13:31,049 INFO L78 Accepts]: Start accepts. Automaton has 37561 states and 60709 transitions. Word has length 149 [2022-01-10 06:13:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:31,049 INFO L470 AbstractCegarLoop]: Abstraction has 37561 states and 60709 transitions. [2022-01-10 06:13:31,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-01-10 06:13:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 37561 states and 60709 transitions. [2022-01-10 06:13:31,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 06:13:31,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:31,053 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:31,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 06:13:31,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:31,265 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:31,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash -884158546, now seen corresponding path program 1 times [2022-01-10 06:13:31,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:31,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597004594] [2022-01-10 06:13:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:31,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:31,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:31,267 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:31,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:13:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:31,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:13:31,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:13:31,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:31,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:31,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597004594] [2022-01-10 06:13:31,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597004594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:31,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:31,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:13:31,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858436030] [2022-01-10 06:13:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:31,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:13:31,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:31,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:13:31,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:13:31,727 INFO L87 Difference]: Start difference. First operand 37561 states and 60709 transitions. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 6 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2022-01-10 06:13:38,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:38,049 INFO L93 Difference]: Finished difference Result 71634 states and 117331 transitions. [2022-01-10 06:13:38,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 06:13:38,050 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 6 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) Word has length 151 [2022-01-10 06:13:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:38,300 INFO L225 Difference]: With dead ends: 71634 [2022-01-10 06:13:38,300 INFO L226 Difference]: Without dead ends: 38309 [2022-01-10 06:13:38,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-01-10 06:13:38,617 INFO L933 BasicCegarLoop]: 1434 mSDtfsCounter, 2121 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 7702 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 4850 SdHoareTripleChecker+Invalid, 8230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 7702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:38,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 4850 Invalid, 8230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 7702 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 06:13:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38309 states. [2022-01-10 06:13:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38309 to 37486. [2022-01-10 06:13:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37486 states, 27182 states have (on average 1.4663012287543227) internal successors, (39857), 28346 states have internal predecessors, (39857), 7700 states have call successors, (7700), 1869 states have call predecessors, (7700), 2603 states have return successors, (13011), 8106 states have call predecessors, (13011), 7619 states have call successors, (13011) [2022-01-10 06:13:40,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37486 states to 37486 states and 60568 transitions. [2022-01-10 06:13:40,442 INFO L78 Accepts]: Start accepts. Automaton has 37486 states and 60568 transitions. Word has length 151 [2022-01-10 06:13:40,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:40,443 INFO L470 AbstractCegarLoop]: Abstraction has 37486 states and 60568 transitions. [2022-01-10 06:13:40,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 9 states have internal predecessors, (106), 6 states have call successors, (18), 5 states have call predecessors, (18), 8 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2022-01-10 06:13:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 37486 states and 60568 transitions. [2022-01-10 06:13:40,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 06:13:40,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:40,448 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:40,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:40,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:13:40,660 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 101561086, now seen corresponding path program 1 times [2022-01-10 06:13:40,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:40,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816328158] [2022-01-10 06:13:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:40,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:40,662 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:13:40,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process