/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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:12:45,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:12:45,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:12:45,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:12:45,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:12:45,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:12:45,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:12:45,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:12:45,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:12:45,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:12:45,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:12:45,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:12:45,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:12:45,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:12:45,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:12:45,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:12:45,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:12:45,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:12:45,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:12:45,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:12:45,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:12:45,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:12:45,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:12:45,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:12:45,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:12:45,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:12:45,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:12:45,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:12:45,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:12:45,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:12:45,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:12:45,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:12:45,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:12:45,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:12:45,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:12:45,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:12:45,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:12:45,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:12:45,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:12:45,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:12:45,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:12:45,170 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 06:12:45,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:12:45,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:12:45,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:12:45,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:12:45,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:12:45,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:12:45,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:12:45,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:12:45,194 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:12:45,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:12:45,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:12:45,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:12:45,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:12:45,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:12:45,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:12:45,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:12:45,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:12:45,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:12:45,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:12:45,197 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:12:45,197 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:12:45,197 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:12:45,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:12:45,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:12:45,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:12:45,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:12:45,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:12:45,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:12:45,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:12:45,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:12:45,443 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:12:45,444 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c [2022-01-10 06:12:45,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e617b09/8ffded965a9a40e88ed04643d8117843/FLAG48a662439 [2022-01-10 06:12:45,963 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:12:45,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product32.cil.c [2022-01-10 06:12:45,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e617b09/8ffded965a9a40e88ed04643d8117843/FLAG48a662439 [2022-01-10 06:12:46,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16e617b09/8ffded965a9a40e88ed04643d8117843 [2022-01-10 06:12:46,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:12:46,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:12:46,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:12:46,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:12:46,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:12:46,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:12:46" (1/1) ... [2022-01-10 06:12:46,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c046b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:46, skipping insertion in model container [2022-01-10 06:12:46,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:12:46" (1/1) ... [2022-01-10 06:12:46,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:12:46,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:12:46,928 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_product32.cil.c[71521,71534] [2022-01-10 06:12:46,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:46,940 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:12:46,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:12:47,005 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_product32.cil.c[71521,71534] [2022-01-10 06:12:47,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:47,010 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:12:47,065 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_product32.cil.c[71521,71534] [2022-01-10 06:12:47,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:12:47,082 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:12:47,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47 WrapperNode [2022-01-10 06:12:47,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:12:47,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:12:47,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:12:47,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:12:47,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,162 INFO L137 Inliner]: procedures = 98, calls = 348, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 851 [2022-01-10 06:12:47,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:12:47,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:12:47,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:12:47,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:12:47,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:12:47,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:12:47,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:12:47,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:12:47,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (1/1) ... [2022-01-10 06:12:47,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:12:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:12:47,280 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 06:12:47,282 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 06:12:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-01-10 06:12:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-01-10 06:12:47,310 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-01-10 06:12:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-01-10 06:12:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-01-10 06:12:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-01-10 06:12:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-01-10 06:12:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-01-10 06:12:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-01-10 06:12:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-01-10 06:12:47,311 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-01-10 06:12:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-01-10 06:12:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-01-10 06:12:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-01-10 06:12:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-01-10 06:12:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-01-10 06:12:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-01-10 06:12:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-01-10 06:12:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-01-10 06:12:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-01-10 06:12:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-01-10 06:12:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-01-10 06:12:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:12:47,312 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-01-10 06:12:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-01-10 06:12:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-01-10 06:12:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-01-10 06:12:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-01-10 06:12:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-01-10 06:12:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-01-10 06:12:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-01-10 06:12:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:12:47,313 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-01-10 06:12:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-01-10 06:12:47,314 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-01-10 06:12:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-01-10 06:12:47,468 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:12:47,470 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:12:48,251 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:12:48,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:12:48,264 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:12:48,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:12:48 BoogieIcfgContainer [2022-01-10 06:12:48,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:12:48,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:12:48,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:12:48,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:12:48,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:12:46" (1/3) ... [2022-01-10 06:12:48,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ee783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:12:48, skipping insertion in model container [2022-01-10 06:12:48,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:12:47" (2/3) ... [2022-01-10 06:12:48,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774ee783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:12:48, skipping insertion in model container [2022-01-10 06:12:48,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:12:48" (3/3) ... [2022-01-10 06:12:48,273 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product32.cil.c [2022-01-10 06:12:48,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:12:48,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:12:48,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:12:48,330 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 06:12:48,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:12:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 581 states, 449 states have (on average 1.6614699331848553) internal successors, (746), 467 states have internal predecessors, (746), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) [2022-01-10 06:12:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 06:12:48,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:48,373 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 06:12:48,425 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:48,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1262274351, now seen corresponding path program 1 times [2022-01-10 06:12:48,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:48,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901380208] [2022-01-10 06:12:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:48,440 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:48,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:48,442 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 06:12:48,487 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 06:12:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:48,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:48,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:48,885 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 06:12:48,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:48,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:48,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901380208] [2022-01-10 06:12:48,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901380208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:48,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:48,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:48,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687031068] [2022-01-10 06:12:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:48,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:48,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:48,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:48,917 INFO L87 Difference]: Start difference. First operand has 581 states, 449 states have (on average 1.6614699331848553) internal successors, (746), 467 states have internal predecessors, (746), 103 states have call successors, (103), 27 states have call predecessors, (103), 27 states have return successors, (103), 100 states have call predecessors, (103), 103 states have call successors, (103) 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 06:12:49,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:49,022 INFO L93 Difference]: Finished difference Result 1155 states and 1904 transitions. [2022-01-10 06:12:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:49,025 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 06:12:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:49,039 INFO L225 Difference]: With dead ends: 1155 [2022-01-10 06:12:49,039 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 06:12:49,046 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 06:12:49,048 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 15 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2795 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 06:12:49,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2795 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 06:12:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 06:12:49,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 445 states have (on average 1.651685393258427) internal successors, (735), 462 states have internal predecessors, (735), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 940 transitions. [2022-01-10 06:12:49,119 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 940 transitions. Word has length 63 [2022-01-10 06:12:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:49,120 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 940 transitions. [2022-01-10 06:12:49,120 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 06:12:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 940 transitions. [2022-01-10 06:12:49,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:12:49,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:49,123 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 06:12:49,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:12:49,332 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 06:12:49,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:49,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:49,333 INFO L85 PathProgramCache]: Analyzing trace with hash -850400045, now seen corresponding path program 1 times [2022-01-10 06:12:49,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:49,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897188339] [2022-01-10 06:12:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:49,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:49,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:49,336 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 06:12:49,338 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 06:12:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:49,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:49,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:49,607 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 06:12:49,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:49,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:49,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897188339] [2022-01-10 06:12:49,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897188339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:49,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:49,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:49,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758473975] [2022-01-10 06:12:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:49,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:49,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:49,614 INFO L87 Difference]: Start difference. First operand 576 states and 940 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 06:12:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:49,681 INFO L93 Difference]: Finished difference Result 1135 states and 1857 transitions. [2022-01-10 06:12:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:49,682 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 06:12:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:49,686 INFO L225 Difference]: With dead ends: 1135 [2022-01-10 06:12:49,686 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 06:12:49,688 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 06:12:49,689 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 12 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2763 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 06:12:49,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2763 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 06:12:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 06:12:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 445 states have (on average 1.649438202247191) internal successors, (734), 462 states have internal predecessors, (734), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 939 transitions. [2022-01-10 06:12:49,713 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 939 transitions. Word has length 64 [2022-01-10 06:12:49,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:49,713 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 939 transitions. [2022-01-10 06:12:49,713 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 06:12:49,713 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 939 transitions. [2022-01-10 06:12:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 06:12:49,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:49,715 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 06:12:49,727 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 06:12:49,924 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 06:12:49,925 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2109481613, now seen corresponding path program 1 times [2022-01-10 06:12:49,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:49,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863299659] [2022-01-10 06:12:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:49,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:49,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:49,927 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 06:12:49,929 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 06:12:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:50,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:50,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:50,215 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 06:12:50,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:50,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:50,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863299659] [2022-01-10 06:12:50,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863299659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:50,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:50,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:50,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510280355] [2022-01-10 06:12:50,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:50,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:50,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:50,221 INFO L87 Difference]: Start difference. First operand 576 states and 939 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 06:12:50,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:50,266 INFO L93 Difference]: Finished difference Result 1135 states and 1856 transitions. [2022-01-10 06:12:50,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:50,267 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 06:12:50,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:50,271 INFO L225 Difference]: With dead ends: 1135 [2022-01-10 06:12:50,271 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 06:12:50,273 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 06:12:50,274 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 10 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2763 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 06:12:50,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2763 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:50,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 06:12:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 06:12:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 445 states have (on average 1.6471910112359551) internal successors, (733), 462 states have internal predecessors, (733), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 938 transitions. [2022-01-10 06:12:50,305 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 938 transitions. Word has length 65 [2022-01-10 06:12:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:50,305 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 938 transitions. [2022-01-10 06:12:50,305 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 06:12:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 938 transitions. [2022-01-10 06:12:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 06:12:50,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:50,309 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 06:12:50,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 06:12:50,518 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 06:12:50,518 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:50,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1841754737, now seen corresponding path program 1 times [2022-01-10 06:12:50,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:50,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943526891] [2022-01-10 06:12:50,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:50,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:50,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:50,521 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 06:12:50,524 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 06:12:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:50,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:50,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:50,803 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 06:12:50,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:50,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:50,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943526891] [2022-01-10 06:12:50,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943526891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:50,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:50,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:50,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704915223] [2022-01-10 06:12:50,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:50,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:50,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:50,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:50,809 INFO L87 Difference]: Start difference. First operand 576 states and 938 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 06:12:50,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:50,852 INFO L93 Difference]: Finished difference Result 1135 states and 1855 transitions. [2022-01-10 06:12:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:50,853 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 06:12:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:50,856 INFO L225 Difference]: With dead ends: 1135 [2022-01-10 06:12:50,856 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 06:12:50,858 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 06:12:50,859 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 8 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2763 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 06:12:50,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2763 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 06:12:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 06:12:50,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 445 states have (on average 1.644943820224719) internal successors, (732), 462 states have internal predecessors, (732), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 937 transitions. [2022-01-10 06:12:50,873 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 937 transitions. Word has length 66 [2022-01-10 06:12:50,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:50,874 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 937 transitions. [2022-01-10 06:12:50,874 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 06:12:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 937 transitions. [2022-01-10 06:12:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 06:12:50,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:50,875 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, 1, 1, 1, 1] [2022-01-10 06:12:50,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:12:51,084 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 06:12:51,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:51,085 INFO L85 PathProgramCache]: Analyzing trace with hash -994317239, now seen corresponding path program 1 times [2022-01-10 06:12:51,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:51,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837019353] [2022-01-10 06:12:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:51,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:51,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:51,087 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 06:12:51,088 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 06:12:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:51,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:51,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:51,366 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 06:12:51,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:51,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:51,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837019353] [2022-01-10 06:12:51,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837019353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:51,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:51,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:51,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909655700] [2022-01-10 06:12:51,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:51,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:51,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:51,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:51,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:51,368 INFO L87 Difference]: Start difference. First operand 576 states and 937 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 06:12:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:51,409 INFO L93 Difference]: Finished difference Result 1135 states and 1854 transitions. [2022-01-10 06:12:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:51,410 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 06:12:51,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:51,413 INFO L225 Difference]: With dead ends: 1135 [2022-01-10 06:12:51,413 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 06:12:51,415 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 06:12:51,416 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 6 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2763 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 06:12:51,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2763 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 06:12:51,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 06:12:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 445 states have (on average 1.6426966292134833) internal successors, (731), 462 states have internal predecessors, (731), 103 states have call successors, (103), 28 states have call predecessors, (103), 27 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 936 transitions. [2022-01-10 06:12:51,429 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 936 transitions. Word has length 67 [2022-01-10 06:12:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:51,429 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 936 transitions. [2022-01-10 06:12:51,430 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 06:12:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 936 transitions. [2022-01-10 06:12:51,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:12:51,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:51,430 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 06:12:51,440 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 06:12:51,640 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 06:12:51,640 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1711845813, now seen corresponding path program 1 times [2022-01-10 06:12:51,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:51,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045540172] [2022-01-10 06:12:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:51,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:51,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:51,642 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 06:12:51,643 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 06:12:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:51,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:51,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:51,945 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 06:12:51,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:51,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:51,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045540172] [2022-01-10 06:12:51,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045540172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:51,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:51,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:51,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664226371] [2022-01-10 06:12:51,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:51,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:51,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:51,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:51,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:51,946 INFO L87 Difference]: Start difference. First operand 576 states and 936 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 06:12:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:52,070 INFO L93 Difference]: Finished difference Result 1146 states and 1871 transitions. [2022-01-10 06:12:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:52,071 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 06:12:52,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:52,076 INFO L225 Difference]: With dead ends: 1146 [2022-01-10 06:12:52,076 INFO L226 Difference]: Without dead ends: 591 [2022-01-10 06:12:52,079 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 06:12:52,082 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 117 mSDsluCounter, 4514 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 5436 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 06:12:52,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 5436 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:52,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-10 06:12:52,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2022-01-10 06:12:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 455 states have (on average 1.6395604395604395) internal successors, (746), 474 states have internal predecessors, (746), 104 states have call successors, (104), 28 states have call predecessors, (104), 29 states have return successors, (106), 100 states have call predecessors, (106), 103 states have call successors, (106) [2022-01-10 06:12:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 956 transitions. [2022-01-10 06:12:52,101 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 956 transitions. Word has length 68 [2022-01-10 06:12:52,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:52,101 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 956 transitions. [2022-01-10 06:12:52,101 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 06:12:52,101 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 956 transitions. [2022-01-10 06:12:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 06:12:52,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:52,102 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 06:12:52,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 06:12:52,312 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 06:12:52,312 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:52,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash -942675798, now seen corresponding path program 1 times [2022-01-10 06:12:52,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:52,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020176497] [2022-01-10 06:12:52,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:52,314 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:52,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:52,315 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 06:12:52,316 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 06:12:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:52,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:52,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:52,580 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 06:12:52,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:52,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:52,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020176497] [2022-01-10 06:12:52,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020176497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:52,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:52,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:52,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836661493] [2022-01-10 06:12:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:52,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:52,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:52,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:52,581 INFO L87 Difference]: Start difference. First operand 589 states and 956 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 06:12:52,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:52,624 INFO L93 Difference]: Finished difference Result 1153 states and 1882 transitions. [2022-01-10 06:12:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:52,625 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 06:12:52,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:52,627 INFO L225 Difference]: With dead ends: 1153 [2022-01-10 06:12:52,627 INFO L226 Difference]: Without dead ends: 585 [2022-01-10 06:12:52,629 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 06:12:52,630 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 6 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2762 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 06:12:52,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2762 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-01-10 06:12:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-01-10 06:12:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 453 states have (on average 1.640176600441501) internal successors, (743), 471 states have internal predecessors, (743), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (103), 99 states have call predecessors, (103), 102 states have call successors, (103) [2022-01-10 06:12:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 949 transitions. [2022-01-10 06:12:52,643 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 949 transitions. Word has length 68 [2022-01-10 06:12:52,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:52,643 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 949 transitions. [2022-01-10 06:12:52,643 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 06:12:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 949 transitions. [2022-01-10 06:12:52,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 06:12:52,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:52,644 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 06:12:52,663 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 06:12:52,854 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 06:12:52,854 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:52,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:52,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1898400757, now seen corresponding path program 1 times [2022-01-10 06:12:52,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:52,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329979770] [2022-01-10 06:12:52,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:52,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:52,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:52,856 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 06:12:52,858 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 06:12:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:53,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:53,141 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 06:12:53,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:53,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:53,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329979770] [2022-01-10 06:12:53,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329979770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:53,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:53,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:53,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364878960] [2022-01-10 06:12:53,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:53,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:53,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:53,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:53,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:53,143 INFO L87 Difference]: Start difference. First operand 585 states and 949 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 06:12:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:53,265 INFO L93 Difference]: Finished difference Result 1178 states and 1926 transitions. [2022-01-10 06:12:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:53,267 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 06:12:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:53,270 INFO L225 Difference]: With dead ends: 1178 [2022-01-10 06:12:53,270 INFO L226 Difference]: Without dead ends: 599 [2022-01-10 06:12:53,272 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 06:12:53,272 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 114 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2591 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 06:12:53,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 2591 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-01-10 06:12:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 590. [2022-01-10 06:12:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 458 states have (on average 1.6288209606986899) internal successors, (746), 475 states have internal predecessors, (746), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 951 transitions. [2022-01-10 06:12:53,286 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 951 transitions. Word has length 69 [2022-01-10 06:12:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:53,286 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 951 transitions. [2022-01-10 06:12:53,286 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 06:12:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 951 transitions. [2022-01-10 06:12:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 06:12:53,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:53,287 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 06:12:53,297 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 06:12:53,496 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 06:12:53,497 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:53,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash -354305170, now seen corresponding path program 1 times [2022-01-10 06:12:53,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:53,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490259278] [2022-01-10 06:12:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:53,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:53,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:53,499 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 06:12:53,500 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 06:12:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:53,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:53,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:53,765 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 06:12:53,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:53,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:53,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490259278] [2022-01-10 06:12:53,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490259278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:53,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:53,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:53,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007857851] [2022-01-10 06:12:53,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:53,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:53,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:53,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:53,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:53,766 INFO L87 Difference]: Start difference. First operand 590 states and 951 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 06:12:53,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:53,863 INFO L93 Difference]: Finished difference Result 1129 states and 1822 transitions. [2022-01-10 06:12:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:53,864 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 06:12:53,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:53,867 INFO L225 Difference]: With dead ends: 1129 [2022-01-10 06:12:53,867 INFO L226 Difference]: Without dead ends: 590 [2022-01-10 06:12:53,869 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 06:12:53,869 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 78 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2594 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 06:12:53,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 2594 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:53,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-01-10 06:12:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2022-01-10 06:12:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 458 states have (on average 1.6200873362445414) internal successors, (742), 475 states have internal predecessors, (742), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 947 transitions. [2022-01-10 06:12:53,881 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 947 transitions. Word has length 70 [2022-01-10 06:12:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:53,881 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 947 transitions. [2022-01-10 06:12:53,881 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 06:12:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 947 transitions. [2022-01-10 06:12:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 06:12:53,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:53,882 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 06:12:53,891 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 06:12:54,091 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 06:12:54,091 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1382479974, now seen corresponding path program 1 times [2022-01-10 06:12:54,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:54,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903399401] [2022-01-10 06:12:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:54,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:54,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:54,093 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 06:12:54,096 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 06:12:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:54,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:54,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:54,365 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 06:12:54,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:54,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:54,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903399401] [2022-01-10 06:12:54,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903399401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:54,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:54,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:54,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902457347] [2022-01-10 06:12:54,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:54,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:54,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:54,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:54,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:54,367 INFO L87 Difference]: Start difference. First operand 590 states and 947 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 06:12:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:54,451 INFO L93 Difference]: Finished difference Result 1129 states and 1818 transitions. [2022-01-10 06:12:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:54,453 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 06:12:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:54,455 INFO L225 Difference]: With dead ends: 1129 [2022-01-10 06:12:54,455 INFO L226 Difference]: Without dead ends: 590 [2022-01-10 06:12:54,457 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 06:12:54,458 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 73 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2594 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 06:12:54,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 2594 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:54,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-01-10 06:12:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2022-01-10 06:12:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 458 states have (on average 1.611353711790393) internal successors, (738), 475 states have internal predecessors, (738), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 943 transitions. [2022-01-10 06:12:54,470 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 943 transitions. Word has length 71 [2022-01-10 06:12:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:54,470 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 943 transitions. [2022-01-10 06:12:54,470 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 06:12:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 943 transitions. [2022-01-10 06:12:54,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 06:12:54,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:54,471 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 06:12:54,493 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 06:12:54,680 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 06:12:54,680 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:54,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1560263654, now seen corresponding path program 1 times [2022-01-10 06:12:54,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:54,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011291422] [2022-01-10 06:12:54,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:54,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:54,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:54,682 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 06:12:54,683 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 06:12:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:54,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:12:54,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:54,977 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 06:12:54,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:54,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:54,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011291422] [2022-01-10 06:12:54,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011291422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:54,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:54,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:12:54,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913538677] [2022-01-10 06:12:54,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:54,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 06:12:54,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 06:12:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:12:54,978 INFO L87 Difference]: Start difference. First operand 590 states and 943 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 06:12:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:55,075 INFO L93 Difference]: Finished difference Result 1138 states and 1828 transitions. [2022-01-10 06:12:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:12:55,076 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 06:12:55,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:55,079 INFO L225 Difference]: With dead ends: 1138 [2022-01-10 06:12:55,079 INFO L226 Difference]: Without dead ends: 578 [2022-01-10 06:12:55,082 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 06:12:55,082 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 107 mSDsluCounter, 4440 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 5352 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 06:12:55,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 5352 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-10 06:12:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 569. [2022-01-10 06:12:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 437 states have (on average 1.6041189931350115) internal successors, (701), 454 states have internal predecessors, (701), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 906 transitions. [2022-01-10 06:12:55,099 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 906 transitions. Word has length 71 [2022-01-10 06:12:55,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:55,099 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 906 transitions. [2022-01-10 06:12:55,099 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 06:12:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 906 transitions. [2022-01-10 06:12:55,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 06:12:55,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:55,100 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 06:12:55,121 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 06:12:55,311 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 06:12:55,311 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1190071667, now seen corresponding path program 1 times [2022-01-10 06:12:55,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:55,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520367482] [2022-01-10 06:12:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:55,312 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:55,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:55,313 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 06:12:55,314 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 06:12:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:55,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:55,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:55,577 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 06:12:55,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:55,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:55,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520367482] [2022-01-10 06:12:55,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520367482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:55,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:55,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:55,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742234203] [2022-01-10 06:12:55,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:55,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:55,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:55,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:55,578 INFO L87 Difference]: Start difference. First operand 569 states and 906 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 06:12:55,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:55,635 INFO L93 Difference]: Finished difference Result 1108 states and 1777 transitions. [2022-01-10 06:12:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:55,637 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 06:12:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:55,639 INFO L225 Difference]: With dead ends: 1108 [2022-01-10 06:12:55,639 INFO L226 Difference]: Without dead ends: 569 [2022-01-10 06:12:55,641 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 06:12:55,642 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 41 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2594 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 06:12:55,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 2594 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:55,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-10 06:12:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-01-10 06:12:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 437 states have (on average 1.6018306636155606) internal successors, (700), 454 states have internal predecessors, (700), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:55,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 905 transitions. [2022-01-10 06:12:55,653 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 905 transitions. Word has length 72 [2022-01-10 06:12:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:55,653 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 905 transitions. [2022-01-10 06:12:55,653 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 06:12:55,654 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 905 transitions. [2022-01-10 06:12:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 06:12:55,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:55,654 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 06:12:55,664 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 06:12:55,864 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 06:12:55,864 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:55,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:55,864 INFO L85 PathProgramCache]: Analyzing trace with hash -578973889, now seen corresponding path program 1 times [2022-01-10 06:12:55,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:55,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710549725] [2022-01-10 06:12:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:55,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:55,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:55,866 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 06:12:55,874 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 06:12:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:56,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:56,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:56,132 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 06:12:56,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:56,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:56,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710549725] [2022-01-10 06:12:56,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710549725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:56,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:56,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:56,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531711414] [2022-01-10 06:12:56,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:56,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:56,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:56,134 INFO L87 Difference]: Start difference. First operand 569 states and 905 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 06:12:56,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:56,202 INFO L93 Difference]: Finished difference Result 1108 states and 1776 transitions. [2022-01-10 06:12:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:12:56,204 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 06:12:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:56,207 INFO L225 Difference]: With dead ends: 1108 [2022-01-10 06:12:56,207 INFO L226 Difference]: Without dead ends: 569 [2022-01-10 06:12:56,209 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 06:12:56,210 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 39 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2594 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 06:12:56,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2594 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:56,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-10 06:12:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-01-10 06:12:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 437 states have (on average 1.59954233409611) internal successors, (699), 454 states have internal predecessors, (699), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:56,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 904 transitions. [2022-01-10 06:12:56,221 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 904 transitions. Word has length 73 [2022-01-10 06:12:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:56,221 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 904 transitions. [2022-01-10 06:12:56,221 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 06:12:56,221 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 904 transitions. [2022-01-10 06:12:56,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:12:56,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:56,222 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 06:12:56,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:12:56,422 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 06:12:56,422 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:56,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1394907258, now seen corresponding path program 1 times [2022-01-10 06:12:56,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:56,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25728192] [2022-01-10 06:12:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:56,423 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:56,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:56,424 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 06:12:56,426 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 06:12:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:56,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:12:56,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:56,684 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 06:12:56,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:56,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:56,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25728192] [2022-01-10 06:12:56,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25728192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:56,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:56,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:56,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756110678] [2022-01-10 06:12:56,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:56,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:12:56,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:12:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:12:56,685 INFO L87 Difference]: Start difference. First operand 569 states and 904 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 06:12:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:56,756 INFO L93 Difference]: Finished difference Result 1108 states and 1775 transitions. [2022-01-10 06:12:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:12:56,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 74 [2022-01-10 06:12:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:56,760 INFO L225 Difference]: With dead ends: 1108 [2022-01-10 06:12:56,761 INFO L226 Difference]: Without dead ends: 569 [2022-01-10 06:12:56,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 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 06:12:56,763 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 65 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:56,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 2575 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:12:56,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-10 06:12:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2022-01-10 06:12:56,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 437 states have (on average 1.597254004576659) internal successors, (698), 454 states have internal predecessors, (698), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 903 transitions. [2022-01-10 06:12:56,776 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 903 transitions. Word has length 74 [2022-01-10 06:12:56,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:56,776 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 903 transitions. [2022-01-10 06:12:56,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 06:12:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 903 transitions. [2022-01-10 06:12:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 06:12:56,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:56,779 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 06:12:56,791 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 06:12:56,989 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 06:12:56,989 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:56,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:56,990 INFO L85 PathProgramCache]: Analyzing trace with hash 501420920, now seen corresponding path program 1 times [2022-01-10 06:12:56,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:56,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676631670] [2022-01-10 06:12:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:56,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:56,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:56,991 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 06:12:56,992 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 06:12:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:57,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:12:57,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:57,304 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 06:12:57,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:57,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:57,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676631670] [2022-01-10 06:12:57,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676631670] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:57,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:57,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:12:57,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792233250] [2022-01-10 06:12:57,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:57,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:12:57,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:57,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:12:57,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:12:57,306 INFO L87 Difference]: Start difference. First operand 569 states and 903 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 06:12:57,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:57,447 INFO L93 Difference]: Finished difference Result 1107 states and 1771 transitions. [2022-01-10 06:12:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:12:57,450 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 06:12:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:57,452 INFO L225 Difference]: With dead ends: 1107 [2022-01-10 06:12:57,452 INFO L226 Difference]: Without dead ends: 574 [2022-01-10 06:12:57,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:12:57,455 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 45 mSDsluCounter, 5129 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 5989 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 06:12:57,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 5989 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:12:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-10 06:12:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 571. [2022-01-10 06:12:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 439 states have (on average 1.5922551252847381) internal successors, (699), 456 states have internal predecessors, (699), 103 states have call successors, (103), 29 states have call predecessors, (103), 28 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2022-01-10 06:12:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 904 transitions. [2022-01-10 06:12:57,469 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 904 transitions. Word has length 74 [2022-01-10 06:12:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:57,469 INFO L470 AbstractCegarLoop]: Abstraction has 571 states and 904 transitions. [2022-01-10 06:12:57,469 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 06:12:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 904 transitions. [2022-01-10 06:12:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 06:12:57,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:57,471 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 06:12:57,485 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 06:12:57,680 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 06:12:57,680 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash 911971252, now seen corresponding path program 1 times [2022-01-10 06:12:57,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:57,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091679189] [2022-01-10 06:12:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:57,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:57,682 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 06:12:57,683 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 06:12:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:57,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:12:57,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:58,132 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 06:12:58,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:58,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:58,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091679189] [2022-01-10 06:12:58,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091679189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:58,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:58,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:12:58,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572203906] [2022-01-10 06:12:58,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:58,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:12:58,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:12:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:12:58,134 INFO L87 Difference]: Start difference. First operand 571 states and 904 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 06:12:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:58,335 INFO L93 Difference]: Finished difference Result 1614 states and 2606 transitions. [2022-01-10 06:12:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:12:58,337 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 06:12:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:58,342 INFO L225 Difference]: With dead ends: 1614 [2022-01-10 06:12:58,342 INFO L226 Difference]: Without dead ends: 1086 [2022-01-10 06:12:58,345 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 06:12:58,345 INFO L933 BasicCegarLoop]: 1051 mSDtfsCounter, 803 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:58,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 1895 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:12:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-01-10 06:12:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1023. [2022-01-10 06:12:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 791 states have (on average 1.6106194690265487) internal successors, (1274), 817 states have internal predecessors, (1274), 182 states have call successors, (182), 51 states have call predecessors, (182), 49 states have return successors, (187), 169 states have call predecessors, (187), 180 states have call successors, (187) [2022-01-10 06:12:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1643 transitions. [2022-01-10 06:12:58,374 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1643 transitions. Word has length 75 [2022-01-10 06:12:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:58,374 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1643 transitions. [2022-01-10 06:12:58,374 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 06:12:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1643 transitions. [2022-01-10 06:12:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:12:58,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:58,377 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:12:58,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:12:58,587 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 06:12:58,587 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:58,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1214675461, now seen corresponding path program 1 times [2022-01-10 06:12:58,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:58,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795649637] [2022-01-10 06:12:58,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:58,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:58,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:58,589 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 06:12:58,589 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 06:12:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:12:58,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:12:58,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:12:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-10 06:12:59,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:12:59,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:12:59,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795649637] [2022-01-10 06:12:59,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795649637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:12:59,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:12:59,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:12:59,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498555830] [2022-01-10 06:12:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:12:59,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:12:59,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:12:59,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:12:59,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:12:59,013 INFO L87 Difference]: Start difference. First operand 1023 states and 1643 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:12:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:12:59,697 INFO L93 Difference]: Finished difference Result 2011 states and 3313 transitions. [2022-01-10 06:12:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:12:59,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2022-01-10 06:12:59,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:12:59,702 INFO L225 Difference]: With dead ends: 2011 [2022-01-10 06:12:59,702 INFO L226 Difference]: Without dead ends: 1031 [2022-01-10 06:12:59,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 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 06:12:59,707 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 827 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:12:59,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 2175 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:12:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-01-10 06:12:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2022-01-10 06:12:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 797 states have (on average 1.6060225846925973) internal successors, (1280), 823 states have internal predecessors, (1280), 182 states have call successors, (182), 53 states have call predecessors, (182), 51 states have return successors, (189), 169 states have call predecessors, (189), 180 states have call successors, (189) [2022-01-10 06:12:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1651 transitions. [2022-01-10 06:12:59,739 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1651 transitions. Word has length 130 [2022-01-10 06:12:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:12:59,740 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1651 transitions. [2022-01-10 06:12:59,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:12:59,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1651 transitions. [2022-01-10 06:12:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 06:12:59,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:12:59,742 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:12:59,757 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 06:12:59,953 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 06:12:59,954 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:12:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:12:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash 815289499, now seen corresponding path program 1 times [2022-01-10 06:12:59,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:12:59,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345761114] [2022-01-10 06:12:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:12:59,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:12:59,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:12:59,956 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 06:12:59,957 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 06:13:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:00,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:13:00,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-10 06:13:00,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:00,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:00,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345761114] [2022-01-10 06:13:00,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345761114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:00,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:00,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:13:00,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293524916] [2022-01-10 06:13:00,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:00,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:13:00,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:00,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:13:00,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:13:00,391 INFO L87 Difference]: Start difference. First operand 1031 states and 1651 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:13:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:00,861 INFO L93 Difference]: Finished difference Result 2394 states and 3798 transitions. [2022-01-10 06:13:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:13:00,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-01-10 06:13:00,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:00,869 INFO L225 Difference]: With dead ends: 2394 [2022-01-10 06:13:00,869 INFO L226 Difference]: Without dead ends: 1406 [2022-01-10 06:13:00,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 127 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 06:13:00,874 INFO L933 BasicCegarLoop]: 970 mSDtfsCounter, 628 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 3835 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:00,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 3835 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:13:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-01-10 06:13:00,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1400. [2022-01-10 06:13:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1069 states have (on average 1.5369504209541627) internal successors, (1643), 1092 states have internal predecessors, (1643), 249 states have call successors, (249), 81 states have call predecessors, (249), 81 states have return successors, (283), 240 states have call predecessors, (283), 245 states have call successors, (283) [2022-01-10 06:13:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2175 transitions. [2022-01-10 06:13:00,908 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2175 transitions. Word has length 132 [2022-01-10 06:13:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:00,908 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2175 transitions. [2022-01-10 06:13:00,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:13:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2175 transitions. [2022-01-10 06:13:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 06:13:00,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:00,911 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:00,924 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 06:13:01,125 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 06:13:01,125 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:01,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:01,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1301133774, now seen corresponding path program 1 times [2022-01-10 06:13:01,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:01,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555778959] [2022-01-10 06:13:01,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:01,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:01,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:01,127 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 06:13:01,129 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 06:13:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:01,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:13:01,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 06:13:01,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:01,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:01,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555778959] [2022-01-10 06:13:01,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555778959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:01,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:01,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:13:01,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570467960] [2022-01-10 06:13:01,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:01,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:13:01,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:13:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:13:01,561 INFO L87 Difference]: Start difference. First operand 1400 states and 2175 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:13:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:02,182 INFO L93 Difference]: Finished difference Result 2777 states and 4442 transitions. [2022-01-10 06:13:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:13:02,183 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2022-01-10 06:13:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:02,190 INFO L225 Difference]: With dead ends: 2777 [2022-01-10 06:13:02,190 INFO L226 Difference]: Without dead ends: 1420 [2022-01-10 06:13:02,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 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 06:13:02,198 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 822 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:02,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 2176 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:13:02,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2022-01-10 06:13:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1420. [2022-01-10 06:13:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1085 states have (on average 1.5290322580645161) internal successors, (1659), 1108 states have internal predecessors, (1659), 249 states have call successors, (249), 85 states have call predecessors, (249), 85 states have return successors, (287), 240 states have call predecessors, (287), 245 states have call successors, (287) [2022-01-10 06:13:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2195 transitions. [2022-01-10 06:13:02,239 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2195 transitions. Word has length 133 [2022-01-10 06:13:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:02,240 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 2195 transitions. [2022-01-10 06:13:02,240 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:13:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2195 transitions. [2022-01-10 06:13:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-10 06:13:02,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:02,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:02,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:02,452 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 06:13:02,452 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:02,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:02,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1185865247, now seen corresponding path program 1 times [2022-01-10 06:13:02,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:02,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154012936] [2022-01-10 06:13:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:02,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:02,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:02,455 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 06:13:02,455 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 06:13:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:02,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:13:02,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:02,884 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:13:02,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:02,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:02,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154012936] [2022-01-10 06:13:02,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154012936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:02,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:02,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:13:02,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790013855] [2022-01-10 06:13:02,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:02,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:13:02,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:02,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:13:02,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:13:02,886 INFO L87 Difference]: Start difference. First operand 1420 states and 2195 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:13:03,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:03,478 INFO L93 Difference]: Finished difference Result 2821 states and 4482 transitions. [2022-01-10 06:13:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:13:03,478 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2022-01-10 06:13:03,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:03,485 INFO L225 Difference]: With dead ends: 2821 [2022-01-10 06:13:03,485 INFO L226 Difference]: Without dead ends: 1444 [2022-01-10 06:13:03,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 132 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 06:13:03,492 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 813 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:03,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 2176 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:13:03,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2022-01-10 06:13:03,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1444. [2022-01-10 06:13:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1105 states have (on average 1.5194570135746606) internal successors, (1679), 1128 states have internal predecessors, (1679), 249 states have call successors, (249), 89 states have call predecessors, (249), 89 states have return successors, (291), 240 states have call predecessors, (291), 245 states have call successors, (291) [2022-01-10 06:13:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2219 transitions. [2022-01-10 06:13:03,557 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2219 transitions. Word has length 136 [2022-01-10 06:13:03,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:03,557 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 2219 transitions. [2022-01-10 06:13:03,557 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:13:03,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2219 transitions. [2022-01-10 06:13:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:13:03,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:03,560 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:03,571 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 06:13:03,770 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 06:13:03,771 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash 338876642, now seen corresponding path program 1 times [2022-01-10 06:13:03,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:03,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839505085] [2022-01-10 06:13:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:03,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:03,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:03,772 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 06:13:03,773 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 06:13:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:03,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:13:03,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:04,182 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:13:04,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:04,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:04,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839505085] [2022-01-10 06:13:04,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839505085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:04,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:04,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:13:04,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281997619] [2022-01-10 06:13:04,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:04,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:13:04,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:13:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:13:04,184 INFO L87 Difference]: Start difference. First operand 1444 states and 2219 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:13:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:04,757 INFO L93 Difference]: Finished difference Result 2873 states and 4530 transitions. [2022-01-10 06:13:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:13:04,757 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2022-01-10 06:13:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:04,763 INFO L225 Difference]: With dead ends: 2873 [2022-01-10 06:13:04,763 INFO L226 Difference]: Without dead ends: 1472 [2022-01-10 06:13:04,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 135 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 06:13:04,769 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 825 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:04,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 2176 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:13:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2022-01-10 06:13:04,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1472. [2022-01-10 06:13:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1129 states have (on average 1.508414526129318) internal successors, (1703), 1152 states have internal predecessors, (1703), 249 states have call successors, (249), 93 states have call predecessors, (249), 93 states have return successors, (295), 240 states have call predecessors, (295), 245 states have call successors, (295) [2022-01-10 06:13:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2247 transitions. [2022-01-10 06:13:04,806 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2247 transitions. Word has length 139 [2022-01-10 06:13:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:04,807 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 2247 transitions. [2022-01-10 06:13:04,807 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:13:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2247 transitions. [2022-01-10 06:13:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:13:04,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:04,810 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:04,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 06:13:05,020 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 06:13:05,021 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:05,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1657557949, now seen corresponding path program 1 times [2022-01-10 06:13:05,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:05,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530149119] [2022-01-10 06:13:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:05,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:05,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:05,023 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 06:13:05,023 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 06:13:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:05,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:13:05,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:05,580 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:13:05,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:13:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-01-10 06:13:06,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:06,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530149119] [2022-01-10 06:13:06,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530149119] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:13:06,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:13:06,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-01-10 06:13:06,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955958362] [2022-01-10 06:13:06,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:13:06,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 06:13:06,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 06:13:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-10 06:13:06,155 INFO L87 Difference]: Start difference. First operand 1472 states and 2247 transitions. Second operand has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (32), 6 states have call predecessors, (32), 12 states have return successors, (33), 12 states have call predecessors, (33), 8 states have call successors, (33) [2022-01-10 06:13:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:12,635 INFO L93 Difference]: Finished difference Result 4866 states and 7674 transitions. [2022-01-10 06:13:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:13:12,641 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (32), 6 states have call predecessors, (32), 12 states have return successors, (33), 12 states have call predecessors, (33), 8 states have call successors, (33) Word has length 142 [2022-01-10 06:13:12,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:12,656 INFO L225 Difference]: With dead ends: 4866 [2022-01-10 06:13:12,657 INFO L226 Difference]: Without dead ends: 3437 [2022-01-10 06:13:12,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 268 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 06:13:12,664 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 3171 mSDsluCounter, 4324 mSDsCounter, 0 mSdLazyCounter, 9244 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 10517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 9244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:12,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3257 Valid, 6064 Invalid, 10517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1273 Valid, 9244 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-01-10 06:13:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3437 states. [2022-01-10 06:13:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3437 to 3067. [2022-01-10 06:13:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2321 states have (on average 1.5002154243860406) internal successors, (3482), 2378 states have internal predecessors, (3482), 534 states have call successors, (534), 183 states have call predecessors, (534), 211 states have return successors, (716), 538 states have call predecessors, (716), 526 states have call successors, (716) [2022-01-10 06:13:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 4732 transitions. [2022-01-10 06:13:12,759 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 4732 transitions. Word has length 142 [2022-01-10 06:13:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:12,759 INFO L470 AbstractCegarLoop]: Abstraction has 3067 states and 4732 transitions. [2022-01-10 06:13:12,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.61111111111111) internal successors, (155), 14 states have internal predecessors, (155), 8 states have call successors, (32), 6 states have call predecessors, (32), 12 states have return successors, (33), 12 states have call predecessors, (33), 8 states have call successors, (33) [2022-01-10 06:13:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 4732 transitions. [2022-01-10 06:13:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 06:13:12,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:12,766 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:12,793 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 06:13:12,977 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 06:13:12,977 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash 644244143, now seen corresponding path program 1 times [2022-01-10 06:13:12,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:12,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680951649] [2022-01-10 06:13:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:12,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:12,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:12,980 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 06:13:12,981 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 06:13:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:13,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:13:13,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:13,412 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-10 06:13:13,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:13,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680951649] [2022-01-10 06:13:13,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680951649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:13,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:13,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 06:13:13,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457316468] [2022-01-10 06:13:13,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:13,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:13:13,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:13,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:13:13,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:13:13,413 INFO L87 Difference]: Start difference. First operand 3067 states and 4732 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:13:13,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:13,646 INFO L93 Difference]: Finished difference Result 5972 states and 9238 transitions. [2022-01-10 06:13:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:13:13,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 145 [2022-01-10 06:13:13,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:13,664 INFO L225 Difference]: With dead ends: 5972 [2022-01-10 06:13:13,665 INFO L226 Difference]: Without dead ends: 2938 [2022-01-10 06:13:13,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:13:13,676 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 57 mSDsluCounter, 5126 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 5986 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 06:13:13,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 5986 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:13:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-01-10 06:13:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2926. [2022-01-10 06:13:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2214 states have (on average 1.506323396567299) internal successors, (3335), 2270 states have internal predecessors, (3335), 514 states have call successors, (514), 171 states have call predecessors, (514), 197 states have return successors, (668), 517 states have call predecessors, (668), 506 states have call successors, (668) [2022-01-10 06:13:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4517 transitions. [2022-01-10 06:13:13,780 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4517 transitions. Word has length 145 [2022-01-10 06:13:13,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:13,780 INFO L470 AbstractCegarLoop]: Abstraction has 2926 states and 4517 transitions. [2022-01-10 06:13:13,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-01-10 06:13:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4517 transitions. [2022-01-10 06:13:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 06:13:13,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:13,784 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] [2022-01-10 06:13:13,797 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 06:13:13,995 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 06:13:13,996 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash -720807921, now seen corresponding path program 1 times [2022-01-10 06:13:13,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:13,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716871202] [2022-01-10 06:13:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:13,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:13,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:13,999 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 06:13:14,000 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 06:13:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:14,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 06:13:14,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 06:13:14,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:13:15,078 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-10 06:13:15,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716871202] [2022-01-10 06:13:15,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716871202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:13:15,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:13:15,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-01-10 06:13:15,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367336472] [2022-01-10 06:13:15,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:13:15,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 06:13:15,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:15,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 06:13:15,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-10 06:13:15,080 INFO L87 Difference]: Start difference. First operand 2926 states and 4517 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, (33), 6 states have call predecessors, (33), 10 states have return successors, (33), 10 states have call predecessors, (33), 8 states have call successors, (33) [2022-01-10 06:13:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:19,626 INFO L93 Difference]: Finished difference Result 7431 states and 11679 transitions. [2022-01-10 06:13:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:13:19,626 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, (33), 6 states have call predecessors, (33), 10 states have return successors, (33), 10 states have call predecessors, (33), 8 states have call successors, (33) Word has length 150 [2022-01-10 06:13:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:19,646 INFO L225 Difference]: With dead ends: 7431 [2022-01-10 06:13:19,646 INFO L226 Difference]: Without dead ends: 4545 [2022-01-10 06:13:19,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 289 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 06:13:19,656 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 5368 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 6075 mSolverCounterSat, 1735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 7810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1735 IncrementalHoareTripleChecker+Valid, 6075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:19,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5445 Valid, 4356 Invalid, 7810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1735 Valid, 6075 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-01-10 06:13:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4545 states. [2022-01-10 06:13:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4545 to 4375. [2022-01-10 06:13:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 3298 states have (on average 1.5057610673135233) internal successors, (4966), 3379 states have internal predecessors, (4966), 779 states have call successors, (779), 249 states have call predecessors, (779), 297 states have return successors, (1027), 798 states have call predecessors, (1027), 767 states have call successors, (1027) [2022-01-10 06:13:19,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 6772 transitions. [2022-01-10 06:13:19,782 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 6772 transitions. Word has length 150 [2022-01-10 06:13:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:19,782 INFO L470 AbstractCegarLoop]: Abstraction has 4375 states and 6772 transitions. [2022-01-10 06:13:19,783 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, (33), 6 states have call predecessors, (33), 10 states have return successors, (33), 10 states have call predecessors, (33), 8 states have call successors, (33) [2022-01-10 06:13:19,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 6772 transitions. [2022-01-10 06:13:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 06:13:19,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:19,785 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2022-01-10 06:13:19,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:13:19,997 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 06:13:19,998 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1008150526, now seen corresponding path program 1 times [2022-01-10 06:13:19,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:19,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127123351] [2022-01-10 06:13:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:19,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:19,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:20,000 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 06:13:20,001 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 06:13:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:20,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:13:20,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:13:20,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:13:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:13:20,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:20,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127123351] [2022-01-10 06:13:20,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127123351] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:13:20,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:13:20,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-01-10 06:13:20,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478282023] [2022-01-10 06:13:20,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:13:20,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:13:20,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:20,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:13:20,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:13:20,857 INFO L87 Difference]: Start difference. First operand 4375 states and 6772 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, (28), 5 states have call predecessors, (28), 7 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2022-01-10 06:13:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:26,257 INFO L93 Difference]: Finished difference Result 17515 states and 27979 transitions. [2022-01-10 06:13:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:13:26,259 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, (28), 5 states have call predecessors, (28), 7 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) Word has length 151 [2022-01-10 06:13:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:26,319 INFO L225 Difference]: With dead ends: 17515 [2022-01-10 06:13:26,320 INFO L226 Difference]: Without dead ends: 13168 [2022-01-10 06:13:26,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-01-10 06:13:26,343 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 4494 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 5774 mSolverCounterSat, 1486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4600 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 7260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1486 IncrementalHoareTripleChecker+Valid, 5774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:26,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4600 Valid, 3175 Invalid, 7260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1486 Valid, 5774 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-01-10 06:13:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13168 states. [2022-01-10 06:13:26,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13168 to 11730. [2022-01-10 06:13:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11730 states, 8802 states have (on average 1.4887525562372188) internal successors, (13104), 9036 states have internal predecessors, (13104), 2101 states have call successors, (2101), 717 states have call predecessors, (2101), 826 states have return successors, (2977), 2126 states have call predecessors, (2977), 2071 states have call successors, (2977) [2022-01-10 06:13:26,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11730 states to 11730 states and 18182 transitions. [2022-01-10 06:13:26,860 INFO L78 Accepts]: Start accepts. Automaton has 11730 states and 18182 transitions. Word has length 151 [2022-01-10 06:13:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:26,860 INFO L470 AbstractCegarLoop]: Abstraction has 11730 states and 18182 transitions. [2022-01-10 06:13:26,860 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, (28), 5 states have call predecessors, (28), 7 states have return successors, (27), 7 states have call predecessors, (27), 6 states have call successors, (27) [2022-01-10 06:13:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11730 states and 18182 transitions. [2022-01-10 06:13:26,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 06:13:26,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:26,864 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:26,879 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 06:13:27,076 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 06:13:27,076 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 228765637, now seen corresponding path program 1 times [2022-01-10 06:13:27,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:27,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529049446] [2022-01-10 06:13:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:27,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:27,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:27,079 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 06:13:27,080 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 06:13:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:27,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 06:13:27,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:13:28,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:28,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:28,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529049446] [2022-01-10 06:13:28,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529049446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:28,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:28,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 06:13:28,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899699940] [2022-01-10 06:13:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:28,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 06:13:28,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 06:13:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:13:28,813 INFO L87 Difference]: Start difference. First operand 11730 states and 18182 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-01-10 06:13:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:33,633 INFO L93 Difference]: Finished difference Result 32055 states and 51040 transitions. [2022-01-10 06:13:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:13:33,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 153 [2022-01-10 06:13:33,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:33,747 INFO L225 Difference]: With dead ends: 32055 [2022-01-10 06:13:33,747 INFO L226 Difference]: Without dead ends: 20365 [2022-01-10 06:13:33,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:13:33,850 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 3979 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 3851 mSolverCounterSat, 899 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 4750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 3851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:33,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4177 Valid, 2636 Invalid, 4750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [899 Valid, 3851 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-10 06:13:33,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20365 states. [2022-01-10 06:13:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20365 to 17609. [2022-01-10 06:13:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17609 states, 13297 states have (on average 1.4895841167180568) internal successors, (19807), 13596 states have internal predecessors, (19807), 3070 states have call successors, (3070), 1044 states have call predecessors, (3070), 1241 states have return successors, (4625), 3109 states have call predecessors, (4625), 3028 states have call successors, (4625) [2022-01-10 06:13:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17609 states to 17609 states and 27502 transitions. [2022-01-10 06:13:34,614 INFO L78 Accepts]: Start accepts. Automaton has 17609 states and 27502 transitions. Word has length 153 [2022-01-10 06:13:34,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:34,614 INFO L470 AbstractCegarLoop]: Abstraction has 17609 states and 27502 transitions. [2022-01-10 06:13:34,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-01-10 06:13:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 17609 states and 27502 transitions. [2022-01-10 06:13:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 06:13:34,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:34,617 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, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:34,630 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 06:13:34,828 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 06:13:34,828 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:34,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2125578942, now seen corresponding path program 1 times [2022-01-10 06:13:34,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:34,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824255956] [2022-01-10 06:13:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:34,829 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:34,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:34,830 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 06:13:34,832 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 06:13:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:35,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 06:13:35,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 06:13:35,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:35,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824255956] [2022-01-10 06:13:35,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824255956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:35,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:35,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 06:13:35,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693276168] [2022-01-10 06:13:35,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:35,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 06:13:35,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:35,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 06:13:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:13:35,365 INFO L87 Difference]: Start difference. First operand 17609 states and 27502 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 6 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-01-10 06:13:41,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:13:41,751 INFO L93 Difference]: Finished difference Result 51813 states and 84857 transitions. [2022-01-10 06:13:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 06:13:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 6 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) Word has length 157 [2022-01-10 06:13:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:13:42,020 INFO L225 Difference]: With dead ends: 51813 [2022-01-10 06:13:42,020 INFO L226 Difference]: Without dead ends: 34172 [2022-01-10 06:13:42,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:13:42,156 INFO L933 BasicCegarLoop]: 1604 mSDtfsCounter, 2795 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 6481 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2937 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 7229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 6481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-01-10 06:13:42,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2937 Valid, 3483 Invalid, 7229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 6481 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-01-10 06:13:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34172 states. [2022-01-10 06:13:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34172 to 32507. [2022-01-10 06:13:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32507 states, 23842 states have (on average 1.4723177585773006) internal successors, (35103), 24645 states have internal predecessors, (35103), 6408 states have call successors, (6408), 1680 states have call predecessors, (6408), 2256 states have return successors, (10700), 6667 states have call predecessors, (10700), 6339 states have call successors, (10700) [2022-01-10 06:13:43,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32507 states to 32507 states and 52211 transitions. [2022-01-10 06:13:43,851 INFO L78 Accepts]: Start accepts. Automaton has 32507 states and 52211 transitions. Word has length 157 [2022-01-10 06:13:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:13:43,851 INFO L470 AbstractCegarLoop]: Abstraction has 32507 states and 52211 transitions. [2022-01-10 06:13:43,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 6 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 6 states have call successors, (19) [2022-01-10 06:13:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 32507 states and 52211 transitions. [2022-01-10 06:13:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 06:13:43,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:13:43,855 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, 1, 1, 1, 1, 1, 1] [2022-01-10 06:13:43,868 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 06:13:44,068 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 06:13:44,068 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:13:44,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:13:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash -391474492, now seen corresponding path program 1 times [2022-01-10 06:13:44,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:13:44,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288512345] [2022-01-10 06:13:44,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:13:44,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:13:44,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:13:44,070 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 06:13:44,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:13:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:13:44,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 06:13:44,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:13:44,739 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 06:13:44,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:13:44,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:13:44,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288512345] [2022-01-10 06:13:44,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288512345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:13:44,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:13:44,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:13:44,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942017757] [2022-01-10 06:13:44,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:13:44,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:13:44,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:13:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:13:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:13:44,741 INFO L87 Difference]: Start difference. First operand 32507 states and 52211 transitions. Second operand has 11 states, 11 states have (on average 10.0) internal successors, (110), 9 states have internal predecessors, (110), 6 states have call successors, (19), 5 states have call predecessors, (19), 8 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19)